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| QUESTION NO. P926-6: I am trying to find data (pinouts) on a Toshiba optocoupler TLP647. |
| TLP647 is a photo-thyristor optocoupler; a suffix of 'G' or 'J' indicates a 400V or 600V rating, respectively, for the SCR. Toshiba suggests replacing TLP647-G or -J, with TLP747-G or -J (option D4), whose pinout is 1) LED anode; 2) LED cathode; 3) n/c; 4) SCR cathode; 5) SCR anode; 6) SCR gate. Datasheets for TLP747-G /-J are found at http//www.semicon.toshiba.co.jp/en/bucat_3/bucat_2/bucat_8/td_4/TD.pdf http//www.semicon.toshiba.co.jp/en/bucat_3/bucat_2/bucat_8/td_6/TD.pdf |
| QUESTION NO. P928-9: I need the cross reference for an LSH 6335P. It is a +12V fixed regulator. |
| Get the datasheet for LM2575, from www.national.com/ds/LM/LM1575.pdf , and use the circuit data on page 10, to ascertain if yours really is a fixed +12V type, or if it is an adjustable type that was biased to provide 12V output. Both use TO220-5 cases; the differences are mainly in the feedback network layouts going to pin 4. |
| QUESTION NO. P924-2: I am looking for a cross reference for a N-Type MOSFET Manufactured by Chino-Exel CEB6030L. It is in TO-263 case. CET makes a similar transistor, CEP6030L in a TO-220 case. Either one would work. It is a high power FET, 30V, 52A max. The application is a power supply sub-circuit on a PC motherboard. |
| Possible substitutes for CEB6030L include ST Micro's STB70NF03L (listed by Mouser Electronics, www.mouser.com) and IRF's IRL3103S (listed by Digikey, www.digikey.com). |
| QUESTION NO. P917-9: I need a datasheet or equivalent for 2SK2056 and 2SK1213. |
| 2SK2056 is a Toshiba N-channel Mosfet, rated 800 Volts, 4 Amps, 40 Watt, Rds[on] < 2.4 ohm, Cis = 610pF, TO220F case. Substitutes might include FS5KM-16A or NTE 2960. 2SK1213 is also a Toshiba FET, rated 600 Volts, 6 Amps, 125 Watt, Rds[on] < 1.25 ohm, Cis = 1400pF, TO3P case. Substitutes might include IRFPC40, NTE 2924, or NTE 2972. |
| QUESTION NO. P914-9: I need equivalents for an XR4151 voltage to frequency converter. |
| Exar's XR4151 can be replaced by NJR's own version, NJM4151D, which is listed by Mouser Electronics (www.mouser.com; catalog# 513-NJM4151D), at $1.36 each. You can also substitute NTE (www.nteinc.com) device NTE890. |
| QUESTION NO. P96-1: I need a source or substitution for BEC 703AL transistor. This transistor is used on power supply for a logic board computer. |
| If you meant CEB703AL, in a SMD220/TO263/D2PAK case, possible substitutes for that one include IRF's IRL3103S, listed by Digikey (www.digikey.com; 800-344-4539), and ST Micro's STB70NF03L, listed by Mouser (www.mouser.com; 800-346-6873). |
| QUESTION NO. P830-1: Need source or sub for audio output IC CD4265GS. |
| CD4265GS is a version of Sanyo's LA4265, from the China Hua Jing Electronics Corp., so LA4265 is a substitute. LA4265 is available from sources like Audio Lab of Georgia (www.datadart.com), Dalbani (www.dalbani.com), MCM (www.i-mcm.com), and Nationwide (www.neiparts.com), among others. |
| QUESTION NO. P817-6: I am looking for a good sub for Motorola MRF477. |
| Substitutes might be MRF497, or MRF455, but may require modifications. See webpage http//rogerbird.tripod.com/3rf.htm for additional information on modifications. |
| QUESTION NO. P813-4: I need data sheets or cross reference for a device number TAG9340 or XO402BE. It is likely to be a triac. |
| The actual number is X0402BE, and it is a sensitive-gate SCR from ST Microelectronics. It is rated at 200 Volts, 4 Amps(rms), and Igt(max) = 0.2 mA. Mouser Electronics (800-346-6873; www.mouser.com) lists this SCR as their catalog# 511-X0402BE, at $0.48 ea. |
| QUESTION NO. P730-7: I am looking for cross references for OPA4130 and OPA4227. |
| Digikey (www.digikey.com) carries the Burr-Brown line-up, including quad opamps such as these. If you need crosses, try Analog Device's AD824, or Linear Technology's LT1465, for the OPA4130, and try Linear Technology's LT1125, or Analog Device's OP470, for the OPA4227. Digikey also carries the Linear Technology line-up. Analog's devices can be purchased directly (www.analog.com), or from suppliers like Newark Electronics (www.newark.com). |
| QUESTION NO. P727-5: Need a source for IC CVA2400A (Triple CRT Driver). CALOGIC no longer produces this IC and no subs are listed. |
| Try LJ Enterprises (www.ljent.com) or Nationwide (www.neiparts.com). |
| QUESTION NO. P724-6: I need a source for a datasheet for transistor P55NE by Morocco or replacement part. |
| P55NE is manufactured by ST Microelectronics; Morocco will be the country of manufacture. Your part number is incomplete. This is probably either STP55NE06 or STP55NE06L. Both are 60 Volt, 55 Amp Mosfets, but the "L" version has a logic-level gate. Compare the datasheets, at us.st.com/stonline/books/pdf/docs/5406.pdf OR us.st.com/stonline/books/pdf/docs/5565.pdf to distinguish these two devices. |
| QUESTION NO. P724-5: I need a cross reference for a Siemens diode part number BYS21-45. I would like to cross to ECG or SK. |
| BYS21-45 is a 45 Volt, 1 Amp Schottky rectifier. Possible crosses include IRF's 11DQ05, or Vishay-Diodes, Inc.'s SR105, both listed by Digikey (www.digikey.com), or Rectron's SR150, listed by Mouser (www.mouser.com). The closest ECG would be ECG578, rated at 90 Volts, but its V-forward might conceivably be too high, in some circuits. ECG585 or 1N5819, both only rated for 40 Volts, might sneak by, again depending on the circuit. |
| QUESTION NO. P723-7: Need source or sub for STK-0100. Dalbani does not have stock, brokers have it but want $250 minimum\ order! |
| Audio Lab of Georgia (www.datadart.com) and Nationwide (www.neiparts.com) are listing both STK0100 and STK0100-II, on-line. |
| QUESTION NO. P719-4: I need a source or sub for Vishay-dale wire wound resistor , part # RH-50-135 (50w 1.5Ohm 3%). |
| Mouser Electronics (www.mouser.com; 800-346-6873) lists the Vishay "RH" series of resistors. Their catalog# 71-RH50-1.5 will replace RH-50-153 (the corrected part#). Mouser also carries the Xicon brand; their catalog# 284-HS50-1.5F might substitute. |
| QUESTION NO. P717-7: I want to know the equivalent of MOSFET IRF5210. |
| IRF5210 is a 100 Volt, 40 Amp, 200 Watt, P-channel Mosfet, in a TO-220 case. Digikey (www.digikey.com) is listing this device; I know of no equivalent.. |
| QUESTION NO. P717-9: What is the substitute for IRFP9240 and is FS10KM equivalent with FS10TM? |
| IRFP9240 is a 200 Volt, 12 Amp, 150 Watt P-channel Mosfet in a TO-247 case. There is no exact equivalent, although Toshiba's 2SJ200 (or perhaps 2SJ201) might serve in some applications. Digikey (www.digikey.com) is listing the IRFP9240. Mitsubishi's FS10KM and FS10TM are two series of 10 Amp Mosfet's, in insulated TO-220 cases. Individual devices of the same voltage rating should be equivalent, but you have omitted the suffixes from their part numbers, which would permit any voltages to be compared. |
| QUESTION NO. P711-2: Need some equivalence for MTP5P25 and 2SC5331. |
| MTP5P25 is a Motorola P-channel Mosfet, rated at 250 Volts, 5 Amp, 75 Watts. Possible subs include (self-insulated) P-channel Fets, 2SJ307, 2SJ449, IRFI9634G. Toshiba's 2SC5331 is rated at 1500 Volts, 15 Amps (30 Amp surge), 180 Watts. A possible substitute is Sanyo's 2SC3996. Nationwide (www.neiparts.com) is also listing both the MTP5P25 and the 2SC5331 themselves. |
| QUESTION NO. P65-9: I need the power amplifier STK 2048IV. |
| B&D Enterprises located in Pennsylvania, www.bdent.com or 1-800-458-6053, about $20 each. |
| QUESTION NO. P68-10: I need a source or cross for a Toshiba C5587. |
| 2SC5587 is available at bdent.com for about $8.64. |
| Toshiba's 2SC5587 is a high-performance device, so I do not recommend a substitute. Specifications are 1500 Vcbo, 750 Vceo, 17 Amps Ic (34 Amps Ic, surge), 75 Watts; gain at 2 Amps Ic = 22-48, gain at 14 Amps Ic = 5-8; Tstg < 2 usec (1.8 typ) & Tfall < 0.15 usec (0.1 typ) at 100 KHz; Vce[sat] < 3V (1.5Vtyp) at 14 A. Ic/3.5A.Ib, TO3PML case. Nationwide (www.neiparts.com) is listing it, online. |
| QUESTION NO. P525-9: Is there any POWER MOSFET part that is equivalent to FS7SM-16A which is made by Mitsubishi? |
| Nationwide (www.neiparts.com) is listing FS7SM16A, online. Potential substitutes are NTE 2377 from NTE, Inc. (www.nteinc.com), STW8NB80, listed by Mouser Electronics (www.mouser.com), and IRFPE50, listed by Digikey (www.digikey.com). |
| QUESTION NO. P522-3: I need a sub for transistor c5339 and the characteristic. |
| This is a Toshiba HOT, 2SC5339, rated 1500 Vcbo, 600 Vceo, 7 Amp Ic, 50 Watt, with an internal damper; Cob = 82 pF, typical Tf = 0.2 usec, typical Tstg = 4 usec. Toshiba's 2SC5149 might substitute; others might be Hitachi's 2SC5132A or 2SC5250, Philips' BU2508DF or BU2520DF, Sanyo's 2SC4124 or 2SC5296, or NTE2353. |
| QUESTION NO. P522-6: Where I can get STK-392-040? |
| For STK392-040, try MCM Electronics (www.i-mcm.com), Dalbani (www.dalbani.com), Audio Lab of Georgia (www.audiolabga.com), or Nationwide (www.neiparts.com). |
| QUESTION NO. P517-2: I am looking for a cross and a source for a n-channel enhancement mosfet p.n cet703al by Chino Excel Tech. |
| This is a 30 Volt, 40 Amp Mosfet. You MUST provide the case style, when trying to identify or cross semiconductors just from the partial number off the cases. As you did not describe the case type, you will need to go to Chino-Excel's website (www.cetsemi.com/prod_inf-e.htm) and look up the specs yourself. The CET is just Chino-Excel's logo, and I find at least 4 different case styles for 703AL (CEB703AL, CED703AL, CEP703AL, CEV703AL). Moreover, there is even a tiny SMD case style (SOT223), that uses CETxxx for the full number, but no 703AL exists in that case style. Once you have the total information, you should be able to cross this to a device from IRF, Fairchild, ST Micro, etc. Devices from these manufacturers do exist, with similar specs to these 703AL devices. |
| QUESTION NO. P516-10: I need a replacement for a NEC chip UPC1378H.ECG. Replacement 1676 no longer available. It is a combination Vert Deflection and Boost. |
| Try Nationwide Electronics (www.neiparts.com) for UPC1378H. |
| QUESTION NO. P514-3: Need sub for transistor type BF488, have tried 4 different suppliers and cannot find it. |
| BF488 is a Philips 350 Volt PNP transistor, ECB pinout, with low Cre capacitance. If your application will not exceed 300V, an NTE2366 might sub. If the full voltage rating is needed, you might try either 2SA1699, or ZTX558 (EBC pinout), both rated 400 Volts. |
| QUESTION NO. P427-7: What is the replacement equivalent of triac FD312M? |
| TFD312M (Sanken) is not a Triac, it is a thyristor (SCR) with a built-in avalanche diode (rated 175V breakover) from gate to anode. It will not test out like a Triac, so first be sure your device is not actually OK. The only equivalent I know is Sanken's TFD312S-M, the insulated version of TFD312M. The specifications may be found in the PDF document found at www.allegromicro.com/skncatlg/thyristor/thyristor.pdf Conceivably, wiring a 180V zener like NTE5058A, from gate to anode, on a standard SCR like S4006, might be tried. |
| QUESTION NO. P426-3: I need a substitute for an IRF612 Fet , Circa 1985 Made by Motorola & ST ( Thompson ). It appears to be a "N" Channel FET. Would an IRF614 be a reasonable substitute? The part is used in an AMF 10 pin bowling ultrasonic pin detector from the mid 1980's. |
| An IRF610 is the usually-recommended substitute for IRF612, but IRF614 will usually replace IRF612, if that is what is available. Unless the gate drive circuitry is really wimpy, even an IRF620 should work. Radio Shack Online (www.radioshack.com) lists IRF610 (cat.# 900-5184), and Digikey (www.digikey.com) carries the entire IRF line-up, to name a couple of sources. |
| QUESTION NO. P424-9: I need a replacement for TDA 9302H. |
| Why not use the original. TDA9302H available at www.bdent.com. |
| I see no problem in replacing TDA9302H with TDA8172, or for that matter, NTE/ECG 1788. MCM (www.i-mcm.com) does list both those TDA IC's in its catalog, to name one source. |
| QUESTION NO. P423-5: I need to find datasheet or replacement of AC02B. |
| What you have provided is only a partial number. Manufacturers use partial numbers in their device markings, because the package description provides the remaining information. Without your providing the package description, multiple devices fit your partial number. If it is a 14-pin IC, it is likely a 74AC02B, an Advanced-CMOS, Quad NOR-gate logic IC. Mouser Electronics (www.mouser.com, cat.# 511-74AC02B), is one source for that IC. However, an AC02 might also be an NEC 2 Amp(rms) Triac (3 pin device), among other possibilities. |
| QUESTION NO. P413-5: I need info and a sub for Motorola transistor MPS H10 305. |
| MPSH10 is an RF transistor, made by several manufacturers. You can get Fairchild's MPSH10 from Radioshack Online (www.radioshack.com; 800-843-7422), cat.# 900-5403; also, Central Semiconductor's MPSH10 is listed by Mouser Electronics (www.mouser.com). If all you want is info, download www.symmetry.com/acrobat_files/mpsh10.pdf for the specs of MPSH10. |
| QUESTION NO. P412-6: Need a cross or information a zener diode labeled KIV609. The i may be a 1, and there is a dash above the 0 and the 9. |
| Shindengen's K1V6 is not a zener, it is a sidactor. It will hold off a working voltage of 40V, but when breakover occurs at 55-65V, it will "crowbar", dropping to a very low voltage (under 1.5V), for as long as at least 50 mA holding current flows. This is in contrast to a zener, which will clamp voltage to a predictable level, but does not go through a negative-resistance regime. The datasheet for K1V6 may be obtained at semi.shindengen.co.jp/en/k1v6.pdf. Should a K1V6 device be needed, try B&D Enterprises (www.bdent.com) for the exact device. Devices from other makers of sidactors, like Teccor and ST Micro, do not exactly replicate the parameters of K1V6, and it would require knowledge of the circuit involved, to select a potential alternative substitute. |
| QUESTION NO. P412-7: Where can I find a replacement to K2141? |
| 2SK2141 is available at B&D Enterprises. www.bdent.com. $4.71. |
| NEC's N-channel Mosfet, 2SK2141, might be directly obtained from suppliers like LJ Enterprises (www.ljent.com), Dalbani (www.dalbani.com), or MCM (www.i-mcm.com). Other substitutes could include IRFIBC40GLC or IRFI6N60A (both self-insulated), or IRFBC40A with insulating hardware. Digikey (www.digikey.com) carries IRF FET's like these. Plain IRFBC40 or ECG2379, with insulating hardware, might also work, although their capacitances and Rds values are not quite as low, as for 2SK2141. |
| QUESTION NO. P411-6: Need to find semiconductor ( voltage regulator) Pt # UA79MGUIC. |
| Nationwide Electronics (www.neiparts.com) is listing UA79GUIC, which is the same device, except it can supply 1 Amp, instead of the 0.5 Amp limit for UA79MGUIC. Some suppliers may also carry ECG954 or NTE954, which are similar devices. |
| QUESTION NO. P36-3: I need the pinout for a STR-Z1502 and alternate of STR-Z1502. |
| Pinouts for thousands of components can be found in www.questlink.com. |
| QUESTION NO. P45-5: I need a source or sub for STK402-040. |
| Check if your number is not actually STK401-040, a Sanyo hybrid IC, listed by places like MCM (www.mcmelectronics.com), Dalbani (www.dalbani.com), and NEI (www.neiparts.com). Sanyo only lists STK401 as using the -0x0 suffixes. |
| You can find information at the following http//www.semic.sanyo.co.jp/index_e.htm. |
| Tritronics. www.tritronicsinc.com. |
| QUESTION NO. P42-3: I need a source for IC.CA3130T, BC109, BC109c,BC108, IC. BRY39, NEV555V, and MC336OP. |
| Most of the parts have ecg subs ca3130t=ecg930; bc109=ecg123a; bc109c=ecg199; bc108=ecg123a; bry39=no sub; nev555v is this ne555v=ecg955m; mc3360p=no sub. |
| NTE 239 (www.nteinc.com) is equivalent to Philips' BRY39, a silicon-controlled switch (not an IC), or else try Amazon Electronics (www.electronics123.com) for BRY39. Newark Electronics (www.newark.com) is listing both CA3130T and CA3130AT. |
| QUESTION NO. P327-8: I need a datasheet of the CI HA12096. |
| Try Hitachi's semiconductor website at www.hitachi.co.jp/sicd/english/products. |
| QUESTION NO. P327-7: I need a source for part #8-749-958-30 Sony Power Regulator / Audio Output IC #STK583FST. It is no longer listed through the parts houses (they say it is discontinued). I need 1 or 2 depending on cost. |
| Try B&D Enterprises at 1-800-458-6053 or www.bdent.com. |
| STK583F would be a Sanyo hybrid IC. Try Dalbani (www.dalbani.com) or Audio Lab of Georgia (www.audiolabga.com). NTE or ECG 1732 is also supposed to substitute for this STK, so you might also find one of those available. |
| QUESTION NO. P327-5: I need pinout for ic la7651p. |
| Try Sanyo Semiconductors websitewww.semic.sanyo.co.jp. Another iswww.bdents.com/schematics. |
| QUESTION NO. P320-7: I need a data sheet for K1181 (SK BODY MARKING) STR D1005T. Who is the manufacturer (transformer body mark EIWA)? |
| SanKen manufactured 2SK1181 and STR-D1005T. The datasheet for the 2SK1181 is at www.bdent.com/schematics/2SK1181.pdf EIWA Co., Ltd. is a transformer and coil manufacturer based in Thailand; 148 Moo 5 Bangkadi Industrial Park, Tiwanon Road, Tambol Bangkai Amphur Muang, Pathumtani 12000. Tel# (662) 501-1611/3, 501-2975; Fax# (662) 501-1614, 963-7121. |
| QUESTION NO. P314-4: Looking for data sheet of triacs st t410 and mac 08m 56 cy. |
| You will have to go to www.st.com, and look up the datasheet for your T410 Triac. The marking T410 describes twelve devices currently in ST Micro's T410 Triac series. They are all logic-level, 4-Amp Triacs, 10 mA Igt max., with voltage ratings from 600 to 800 Volts, in various case styles. ST Micro knows that you (but not me!) can see the case style, so that is not given in the marking code. An overview of the entire T405/T410/T435 series is here, www.st.com/stonline/books/pdf/docs/7669.pdf Motorola/ON Semiconductor makes the MAC08M (plus the date code), a sensitive-gate, 0.8 Amp, 600 Volt Triac. Go to www.onsemi.com/pub/Collateral/mac08bt1rev3.pdf for that datasheet. |
| QUESTION NO. P36-7: I need the spec of Mitsubishi's BCR5PM12T component and where to find its data sheet? |
| Try to look side http//www.mitsubishichips.com/data/datasheets/power/pdfs/40000025.pdf. |
| BCR5PM12 is a 600 Volt, 5 Amp Triac. Its datasheet can be obtained at www.mitsubishichips.com/data/datasheets/power/pdfs/40000025.pdf. This Triac might be substituted by devices like BTA08-600CW or Q6008L5, available from sources like Mouser Electronics (www.mouser.com). B&D Enterprises (www.bdent.com) might stock the Mitsubishi devices. |
| QUESTION NO. P228-11: I need a sub for STK-392-020 Convergence Device for Sony and Toshiba Projection TV's. |
| It is very probable that the STK-392-040 will work as a viable substitute. |
| QUESTION NO. P228-6: Where can I order STK4278L? |
| Dalbani (www.dalbani.com) is listing STK4278L, on their website; MCM Electronics (www.i-mcm.com) also lists this Sanyo hybrid IC. |
| QUESTION NO. P228-2: I need the equivalent of IC WT8045 (N281). |
| The Weltrend WT8045's are H/V sync signal processing and power-saving detection IC's. There will be no equivalent. MCM (www.mcmelectronics.com) lists the WT8045N281 in its catalog. Another source of Weltrend IC's is LJ Enterprises (www.ljent.com). |
| QUESTION NO. P215-9: I am searching a matched dual npn-transistor or integrated current-mirror with at least 80V VCE0 in SMD-package. |
| I don't know of an off-the-shelf source for SMD dual matched-pair NPN transistors (or IC's) with this high Vceo, but if this is for a current-mirror application, you may not really need a matched pair. Often, dual high-gain transistors in the same package will provide current mirrors of reasonable performance, with no additional circuitry. However, if the Vbe mismatch is still too great, using a non-matched pair, for your purposes, the Vbe mismatch can be made inconsequential, by adding a pair of equal-value emitter resistors to the two transistors. The value of these resistors is chosen to drop a few tenths of a volt, at the current level intended for the current mirror. Such a small voltage drop would cause a trivial reduction in circuit compliance, especially if you are operating at up to 80 Volts. For applications under 20 mA Ic current, the Panasonic XN05553, a dual 100 Vceo NPN, in a 6-pin SMD package (SC-74), is listed by Digikey (www.digikey.com, cat.# XN5553CT-ND). The very high gain (>1000 typ.) of the XN05553 would be helpful in a current-mirror application. For relatively high currents, 20 mA to 0.5 Amp, the Zetex ZDT694 (120 Vceo, SM-8 package) is a possibility. |
| QUESTION NO. P216-6: We are looking for a part (maybe MOSFET) with type number K422, but we can not find the data sheet of it. We search the internet and found from Japanese website that it maybe similar with Toshiba 2SK2961 (were not sure, because we do not understand Japanese Characters). |
| 2SK422 and 2SK2961 are both 60 Volt Mosfets from Toshiba, in TO92L cases. The 2SK2961 could replace 2SK422 in some circuits, but perhaps not always. If this is a problem, Nationwide (www.neiparts.com) is listing 2SK422 itself in its inventory. In a switching application, 2SK2961 should be superior to 2SK422, so long as the FET's driver circuit is able to pull the gate well below 0.8V at turn-off. This might be a concern with some types of TTL-logic FET driver circuits. In an amplifier application, there may be a mismatch, given that 2SK2961 has almost a 10-fold higher transconductance than does 2SK422, so that the biasing elements intended for a 2SK422 may have incorrect values for the 2SK2961. For comparison, their specifications are as follows. 2SK422 is 60 Vbr, 0.7 Amp, 0.9 Watt, Yfs = 0.22 S.typ.; Cis = 45 pF, Crs = 20 pF; Vgs[on] = 1.8-3.5 V. The 2SK2961 is 60 Vbr, 2 Amp, 0.9 Watt, Yfs = 2 S.typ.; Cis = 170 pF, Crs = 25 pF; Vgs[on] = 0.8-2.0 V; Rds[on] = 0.26 ohm typ @ 4Vgs. |
| QUESTION NO. P216-2: Who supplies the Toshiba FET SK 880 in the USA, in quantities greater than 3,000? |
| DERF (www.derf-intl.com) is showing Toshiba's 2SK880 (SMD JFET), in quantities in excess of 400,000 available, in their online website. |
| QUESTION NO. P215-2: I need a source for Motorola diodes marked "MUR 160 443". |
| Motorola has transferred manufacture of discrete semi's like these, to ON Semiconductor. For modest quantities, try Newark Electronics (www.newark.com) or Dalbani (www.dalbani.com). For production quantities, try distributors like Avnet (www.avnetmarshall.com) or DERF (www.derf-intl.com). |
| QUESTION NO. P29-5: Looking for source for a data sheet for 2N915 to confirm possible substitute by current production part. |
| These references are from
Towers International Transistor Selector: Revised Edition Update
4, Data specs for 2N915 are as follows: Vcb max = 70v, Vce max = 50v, Veb max = 5v, Ic max = 200ma, Tj max = 175c, Ptot = 360mwf, Ft min = 250m, Cob max = 4p, Hfe = 50/200, Hfe bias = 10ma, Euro equiv = BSW64, USA equiv = 2N2222A. If 2N915A, then there are 3 differences: Tj max = 200c, Ft min = 600m, Hfe = 50/250. Euro and USA equiv are same as above. |
| Since 2N915 is just a general-purpose transistor, the specifications alone may suffice, as I do not have a datasheet located. 2N915 is a TO18, NPN device; Vcbo = 70V, Vceo = 50V, Vebo = 5V; Ic = 100 mA; Pd = 360 mW; hFE = 50-200 @5 Vce, 10 mA IC; Vce[sat] < 1.0V & Vbe[sat] < 0.9V @ 10 mA Ic; Cob = 3.5 pF. Except for a somewhat lower Vceo and Vcbo, a 2N3904 would be a good match for this transistor, and could substitute, so long as the circuit's voltage does not exceed the voltage limits of 2N3904 (Vceo = 40V, Vcbo = 60V). If the higher voltage ratings of 2N915 are needed, after all, BC546A might be considered. |
| QUESTION NO. P22-7: I need a source for 2sk175, I need three of them. |
| Try Techsonic, website www.techsonicusa.com , or email techsonic@usa.com. |
| QUESTION NO. P111-8: Need a source for an M5M82C255ASP or TMP82C255AN-10 dual 8255 chip. This is obtainable in large quantities but I only need 2 pieces. I live in Canada. |
| Pacific Semiconductors (Vancouver, B.C.) is listing TMP82C255AN-10 on-line. Their website is at www.pacificsemi.com , and their email is info@pacificsemi.com. |
| QUESTION NO. P110-6: Need cross for thermistor labeled MCI F-775. |
| F775EL is a Therm-O-Disc inrush current limiter (N.T.C.); rated for 11 Amps maximum, and an initial resistance at 25°C of 2.5 ohms. It will cross to types H65ICL259M150 (Maida, www.maida.com), SCK-2R512 (Thinking Corp., www.thinking.com.tw), SG160 or SG307 (RTI Electronics, www.rti-corp.com)), ST2R515B (U.S. Sensor, ussensor.com), and WS380 (Western Electronic Components, www.wecc.com). |
| QUESTION NO. P18-1: Need cross reference / replacement (preferably not Japanese 2SK) for Nec Transistor 2SK2363. |
| The MOSFET 2SK2363 is rated at 450 Volt, 10 Amp, Rds[on] < 0.5 ohm, 35 Watt, in a TO-220F case. Other than Japanese "2SK" FET types, ST Micro's STP10NC50FP could replace a 2SK2363. If insulation hardware is used, their TO-220 types, STP10NC50 or STP11NM60, could replace it. International Rectifier's IRFIB7N50A (or IRFB11N50A with insulation hardware) are another possibility. |
| QUESTION NO. P14-10: I need equivalent of circuit top210pfi and its source and datasheet. |
| The "TOP" series of Off-line PWM switches are made by Power Integrations Inc; their website (www.powerint.com) lists their distributors. The datasheet for TOP210PFI is found at this URL, www.powerint.com/PDFFiles/top209210.pdf For these types of devices, there are generally no equivalents that can act as drop-in replacements. |
| QUESTION NO. P14-8: Seeking power mosfet 2SK414 (printed as K414 on chip). Techsonics listed this but claims it was a mistake. Need cross or upgrade equivalent for 160V, 8A, 100W, .5R for instrument amplifier. |
| Dalbani Corp. (www.dalbani.com) is listing 2SK414 on its site. A possible substitute, listed in B&D Enterprises's catalog (800-458-6053; www.bdent.com), is 2SK1276A. |
| QUESTION NO. P13-5: I need the equivalent of 2SB1218A. |
| I could not find a cross-reference at NTE but Mouser Electronics (800-346-6873) has this part for 52 cents. |
| Matsushita's 2SB1218A is an SMD (SC-70) PNP transistor, 45 Vceo, 0.1 Amp, 0.15 W, pinout BEC, and the original is still available. Mouser Electronics (800-346-6873; www.mouser.com) and B&D Enterprises (www.bdent.com) list 2SB1218A. If an equivalent is still required, 2SA1576A, 2SA1586, and 2SA1603 are possibilities. |
| QUESTION NO. P1226-5: Looking for cross reference and supplier for 2N6114 UJT transistor. OEM on this part was GE. |
| There is a source in the UK, Dial Electronics, (www.dialelectronics.com) that has the 2N6114. They will ship to the U.S. Phone +44-191-4177003 Fax +44-191-4177053 E-mail Dial Electronics. Another source may be Bohr Electronics (www.bohrelectronics.com) but their WEB site is currently under construction. |
| QUESTION NO. P1226-1: I need a source for a cross-reference for Hitachi's 2SA1084. |
| Exact replacement 2SA1084 is available from MCM Electronics. Also ECG129P or NTE129P are replacements. |
| QUESTION NO. P1222-8: I need info on part 2sk2049, is for an APC UPS. |
| Go to http//www.nteinc.com/specs/2900to2999/NTE2986.html to find data sheet on the 2sk2049. |
| QUESTION NO. P1127-9: Where can I get a datasheet or pinout of sda2121? |
| SDA2121 is an I2C-bus PLL IC, from Siemens. Its pinout is 1) Vdd; 2) SCL; 3) SDA; 4) AO; 5) PRT; 6) SA1; 7) SA2; 8) SA3; 9) AM/FM; 10) FMI; 11) GND2; 12) AMI; 13) PDFMA; 14) PDFM; 15) PDAM; 16) PDAMA; 17) LD; 18) OSC1; 19) OSC0; 20) GND1. If required, the datasheet could be obtained (by purchase) from www.chipdocs.com. |
| QUESTION NO. P121-10: I am desperately looking for a parts supplier for stk4278 ic's as well as the stk392 - 10 or 20's. We do a lot of Sony projections and now it seems impossible to get these parts. |
| Dalbani have these pieces in stock stk 4278 and stk392-010 and stk392-020, tel.800-325-2264 USA or 800-667-4362 Canada, www.dalbani.com. |
| Try Dalbani (800-325-2264; www.dalbani.com) for STK392010, STK392020, STK4278. Their online site is currently listing those chips. |
| QUESTION NO. P111-10: What is the best substitute for a Motorola MTS102 temperature sensor? Motorola no longer manufactures this part and I can not seem to find anyone willing to sell them in small quantities. A data sheet would be nice too. |
| MTS102 is simply an NPN transistor with the C & B connected, so that only the B-E diode junction passes any current. The forward voltage of this B-E diode junction is a function of temperature. The forward voltage of an MTS102 device was about 0.60 Volts (0.58V to 0.62V range) at 25°C, for a set 0.1 mA If constant current, with a temperature coefficient of about -2.26 mV per °C (-2.18 to -2.32 mV/°C range), at 2% accuracy. Since MTS102 was sorted into several slightly different parameter ranges, for the Vbe @25° and tempco, even a direct-replacement MTS102 might need calibrating. A cheap solution could be to connect the C & B on a few 2N3904 transistors, and use one whose B-E diode has voltages in the MTS102 range. If your application includes a calibration step anyway, this might be quite simple. |
| QUESTION NO. P106-8: Can anyone please cross a transistor CL066B? |
| The replacement transistors for CL066b are 2SC3226, 2SD879, 2SC3671, 2SC4482, 2SD965 Vc_emax25V Icmax 1Amp. |
| Ecg 289A- NPN> Collector to Base 100v >Collector to Emitter 80v > Base to Emitter 5 volts > 0.5Amp >Case TO-92. |
| QUESTION NO. P1010-4: I need equivalent of surface-mount Optocoupler Type ILD206T. |
| Try QT Optoelectronics' MOCD208-M device. Both Mouser Electronics (800-346-6873; www.mouser.com) and Digikey (800-344-4539; www.digikey.com) list this type in their catalogs. |
| QUESTION NO. P105-2: I need to get a cross reference for mosfet 2SK1849 or his electrical characteristics. |
| The electrical characteristics of Sanyo's 2SK1849 (logic-level, N-channel SMD Mosfet) are, 100 Volts, 0.25 Amp, 0.25 Watt, and Rds[on] < 3.2 ohms at 0.15 Amps. Its pinout is GS||D. It has no cross in the SOT23 case. |
| QUESTION NO. P928-1: I need a source or substitute for STK488-010. |
| Try Dalbani Corp. (800-325-2264; www.dalbani.com) for STK488010. |
| QUESTION NO. P922-9: I need specs for RCA diode #198594 for cross. |
| The diode you are looking for is ECG571 soft recovery.fast sw. 1000v 3A. and 100ns good look. |
| QUESTION NO. P922-6: I need a datasheet or pinout of ic LA7612. Is it the same with LA7610 or LA7615? What is the pinout of the Vertical VCC? |
| Check website www.chipdirectory.com for related information on chips and semiconductors incl. datasheets. |
| QUESTION NO. P921-6: I need a source or substitute for a Vishay Dale Thermistor part number 4M1003-1. I need 120 pieces urgently. |
| A possible substitute would be Thermometrics part# DC95G104W. Digikey (800-344-4539; www.digikey.com) lists this thermistor, as their catalog# 235-1008-ND. |
| QUESTION NO. P921-1: I am looking for a data sheet for parts stk3062. |
| The STK3062 datasheet is at www.bdent.com/schematics/STK3062.pdf in PDF format. |
| QUESTION NO. P226-2: When ever I replace a horizontal output transistor on HP D6433A monitor, it blows up within 20 minutes. |
| Check Q710 for short circuit. If output transistor shorted this one also shorts. Also check flyback transformer for dry joints. |
| QUESTION NO. P35-9: Acer 7176ie monitor has a blown fuse, short HOT. After replacement, power comes up but no raster. Relay click and led on, but nothing happens. Check the voltage and got the 210 volt. Re-adjust the vr701 only got the min at 175 volt. Check all the rectifiers and seems okay. I changed Q602 but same symptom. |
| The correct voltage is 190V. Check G2 at pin 7 (caution high voltage) , +6.5V at pin 9 (heater) , +75V , +12V on CRT. |
| QUESTION NO. P222-5: Mitsubishi Diamond View (1772E) monitor FCC JVP7276E. Power light comes on and then disappears. Flyback transistor was short circuit. I checked the FET which limits current to this transistor and all is ok. The power supply does not seem to continue oscillating after start up as the B+ voltage comes up and then slowly disappears. |
| There are a number of components to check with this fault. Replace c327 with a higher value(6kv), r329 10k, q301 bss89, d308 ug4d, q316 irf640, r241 10k, and the last is an undocumented change to the cct, check jumper j103 it has been changed to a 3 amp pico fuse to protect the 50volt line from a shorted hot. you will find it at the junction of r750 and r702. |
| QUESTION NO. P31-10: Gateway DX17s monitor focus volts high causing arc-over in CRT Base. HT OK at 185 Volts. |
| If arcing occurred just between the two focus lines, while adjusting the H-focus or V-focus adjusts, the difference in voltage between the two focus lines may have become too large during adjustment. However, in general, the cause is a bad flyback transformer, Mag Innovision, TF2-6V5-001-LA. You might check if the arcing continues to occur, after the CRT socket has been detached from the CRT. |
| QUESTION NO. P227-3: Acer 7176i monitor, the pincushion control does not work. Also I believe some parts were replaced by another service center with incorrect ones. I need part numbers for q311, q312, q313,d314 and d308. I also need values of r239, r243, r458, r348, r456, r455, r349. |
| If its similar to 7176iE or 7176iS q311-A673, q312-H945, q313-A733, d314-1N4148, d308-FES8JT, r348-1ohm (1/4W 5%), r349-560 ohm (1/8W 5%) but r239, r243, r455, r456, r458 not found in my schematics. |
| The 7176IE/7176IS are not the same chassis as the Acer 7176i. For pincushion faults, I would first check Q312 & Q313 for leakiness; also check R456 and C383 = 2.2uF/250V. Q311 = 2SC4542, but 2SC3688 with insulator will substitute. Q312 = 2SD669A; Q313 = TIP47. R239 and R243 are fusible resistors, usually 0.5 ohm/0.5 Watt, but 1 ohm resistors are sometimes installed at the factory. R346 = 1 ohm; R456 = 150 ohm. R458 can have either 1 ohm or 2.7 ohm values installed. Always check/replace solder on Molex connector M605. |
| QUESTION NO. P228-4: Applevision 1710 AV monitor, I need the values for burnt Rl11 and Rl55. |
| If I am distinguishing your small-case L's from your one's correctly, these resistors are RL11 = 22 ohm and RL55 = 15 ohm. |
| QUESTION NO. P227-6: How do I remove the cover of a Dell 1025H monitor, FCC IEY447S says it is a Nokia. |
| There are two clips on each side, to release. Have something ready to wedge the case, so that the first clip on any given side does not re-engage, before the second is released. One release method is to use a stiff, but bendable rod (to follow along the top curve of the rear cover to reach the clip), and slide it in to release the clip. You can also whack a bit along the top seam, while lifting up on the rear case (monitor face down). |
| QUESTION NO. P227-2: Proview mt-pv1564 monitor. I am looking for a substitute for d600 part number on it is dmv32b. |
| ST Micro's DMV32B is a dual rectifier, incorporating both a 1500 Volt damper, and a 600 Volt ultrafast modulation rectifier, into a TO220FI case. Nationwide (www.neiparts.com) is listing DMV32B itself, in their online database. Sanken's FMP-2FUR might substitute, as it is also TO220FI dual damper/modulation rectifier. B&D Enterprises (www.bdent.com) is one source for Sanken products. |
| QUESTION NO. P27-6: HP Pavilion M70 monitor, the main board is made by Tatung PWB-1059 Rev 13 chassis code C7B. When the resolution is switched from 800x600 to 1024x768 or higher the screen is jittery as if it has a sync problem. If the monitor is turned off then on the picture is ok until changing the resolution again from 800x600 to higher resolutions. |
| Common fault on M70 monitors with issue 13 board manufactured between June 2000 and AUG 2000. Replaced Q401 with a IRFS630A or IRFS640A FET. Issue 13 board has power supply design change which results in not enough gate drive in high resolutions to Q401. |
| QUESTION NO. P216-10: HP d5258a monitor FCC c5f7nfcmc1520x made by Daewoo has resistor r554 (located behind the FBT) burnt beyond recognition. |
| If R554 is burnt it indicates that the flyback transformer has shorted internally.R554 is part of the ABL circuit. You will have to replace the flyback transformer, R554 (100k), also check R555 (1k), Q522, C549 and C533. |
| QUESTION NO. P226-8: Apple M4552 monitor (multiScan720) with a 17" LG picture tube detects rgb input the led becomes green and a relay turns on (click). IC601 has a normal heat; but the flyback looks burnt and no high voltage. |
| Sounds like the flyback needs replacing, although you might test it, to verify this. This Apple is a Goldstar chassis, related to chassis CA-48 (as in the LG Studioworks 77i), and the flyback is a Goldstar flyback, # 6174Z-2002F. You might also check whether resistor R791 = 39 ohm/5W, off pin# 2 of the flyback, is open or burnt. |
| QUESTION NO. P26-1: Apple Studio Display M4868 monitor has no deflection or high voltage. Power indicator LED is on (green). B+ is present, relay protection is on. |
| Check IC501 on the main deflection board. Several monitors, including this one employ two horizontal output transistors (one deflection, one high voltage). Q507 seems to be the ''high voltage'' horizontal output transistor. Double check and make sure it is receiving B+. |
| QUESTION NO. P26-2: NEC C&C-15R128 monitors start up then restart and so on. The hi-vol is heard during start. I replaced a bloated c105 cap to no avail. R201 shows sign of heat but measures at 221ohm. |
| Replaced c111, 1uf, 50v, fixed the restarting problem. |
| QUESTION NO. P222-6: I was working on various problems with Daewoo CMC-1511. Finally I have got the picture on the screen but the picture is very wide (horizontal size and pincushion controls does not work). |
| The whole problem was caused
by D504 (S3L
type). Other
problems that I had with CMC-1511B - monitor dead, none of voltages - Power control IC (STR-S6707) - all voltages present, no picture - Video AMP IC (LM 2405T) |
| First, check D504 = S3L60, a 600 Volt, 3 Amp ultrafast rectifier, off the damper & HOT, for reverse leakiness or short. B&D Enterprises (www.bdent.com) is one source of S3L60, if a replacement is needed; substitute ultrafasts could be Motorola's MUR460, Sanken's RL4A, or ST Micro's MDV04-600, among others. If D504 is not leaky, try checking C520 in parallel with D504, or troubleshooting at the STV7778 (or TDA9103) IC. See if the DC voltage varies at pin# 37 (for pincushion adjustment) as you change the pincushion control, and if the pincushion correction parabola output at pin# 36 responds, as well (on an oscilloscope). If pin# 37 will not adjust, check the control circuitry. If pin# 37 varies, but pin# 36 does not respond, try replacing the IC. If both pins will vary, check components downstream of pin# 36. |
| QUESTION NO. P126-3: Sun AK8GDM500PS monitor. I need a source or sub for shorted dual transistor MX0841 in the power supply board. |
| Check at www.datadart.com. They have it for 10$US. |
| QUESTION NO. P119-4: Viewsonic 17 chassis 1752-2 monitor with no vertical height. I replaced IC490 and checked the 1 ohm resistor, and looked for connections as well, and still only getting a line. |
| If it is similar to GS771, supply of IC490 (STV9379) has +15V (pin 2) and 8211;15V (pin 4). Check another 1 ohm (or 0.22 ohm/ 1W, R836) resistor in negative line. Also check diodes between pin 2 and pin 6 (D404 &D401). |
| QUESTION NO. P216-7: Mag DX1595 monitor, trapezoid is unadjustable it looks like this / \. Checked the yoke and complete board for dry joints etc, nothing found. |
| Trapezoid (keystone) is controlled by a DC voltage (2-6VDC range) applied to pin 38 of IC101 = TDA9103 (or STV7778). Check that the trapezoid adjustment does provide this voltage change at that input pin, over the entire range. If not, check components upstream in the control circuit. If the voltage at pin 38 is changing properly, try replacing IC101; they fail a lot. |
| QUESTION NO. P216-4: Dell D1025HTX / Sony Ultrascan 1000HS monitor with Q503 and D504 shorted. I think that Q503 is IRF19620g. I need the p art number or equiv for D504, and other parts to look for that caused these to short out. |
| Q503 is IRFI9630G in this model; Digikey (www.digikey.com) lists these. D504 is a Toshiba 3DL41A, a 3 Amp ultrafast rectifier. NTE/ECG 588 is similar to 3DL41A, or you might get a Sony p/n#8-719-051-97 from a Sony distributor; also, B&D Enterprises (www.bdent.com) probably stocks both IRFI9630G and 3DL41A. If the Q507 HOT is not shorted, check that the solder on its leads is good. |
| QUESTION NO. P215-4: CTX CVP5468a monitor. Cleared up a dim screen by adj "screen" cntrl on flyback. Also cleaned crt pins (did the most good). Then the H size went wide. Cannot find adjust. Diode or cap went?L304 and L305 does not help. |
| The common cause of too-wide in this chassis is one of two high-voltage film caps going bad, C313 & C314, often shorted. Values are roughly 0.01uF, but the exact values will vary due to fine-tuning at the factory, so check value. Also, in some, the OEM caps used were polypropylene, not mylar; if so, replace with same type, to prevent overheating. |
| QUESTION NO. P214-3: Sony GDM 2039 monitor, original fault loses sync/fails to start. Cure was nearly all 1uF 50V surface mount caps on 'N' board were dead. Now we have slight pincushion error, but cannot see how to adjust this. Advice on making pincushion, trapezium and rotation adjustments. |
| There are several versions of N boards out there, so procedures may vary a bit. For example, the Radius GDM2039 has an interface switch on the back panel, that you set to two-page color before starting. To the left of the CRT, will be a vertical board, the 'N1' board. There should be a service switch, SW1, that you set to Service position. Turn on the unit, and you should then be able to toggle through the various geometry modes with the select button, and adjust the values with the + and - buttons. Different LED's will be lit, or not, depending on the mode you selected. Set the service switch back to User position when finished. |
| QUESTION NO. P213-2: Numerous Dell D1726T-HS monitors, start going bad with screen getting fuzzy in middle of screen, from top to bottom. Reaches a point that loses picture, and High Voltage drops from 28K and cycles, to a point of complete failure. Disconnect cable from P C, and high voltage comes back okay. Checked high voltage, most electrolytics, with no luck. Common to about 25 units. |
| Try checking for a bad dynamic focus transformer, T701. If your Dell's FCC# corresponds to a Sony GDM-17SE2T, then if T701 is bad, you might try using a Sony T701, from a Sony distributor, as a replacement (1-429-373-11). Besides T701, try checking Q701 & Q702, or perhaps try another 'N' board. |
| QUESTION NO. P212-4: Gateway 500-069cs monitor when turned on, the green light comes on but the monitor does not. Checked voltages at H.O.T, nothing. Checked voltages at the switch mode IC, pin1=0v, pin2=0v, pin3=125v, pin4=6.3v, pin5=0v. I am thinking that the IC might be bad but can't find it any where. It is STRF6524. |
| NEI (www.neiparts.com) is a possibility for STRF6524. But before ordering it, first check the values of all the associated components for this IC, including the resistor values, and check around carefully for cold solder joints. |
| QUESTION NO. P29-2: Mag DJ530 VDO-512 monitor has pincushion that cannot be adjusted. Also, has low brightness. |
| Try checking the voltage regulator IC, at location Q309; when these go bad, you can get a variety of symptoms. Dim video is one symptom seen. |
| QUESTION NO. P212-5: Mag 1975 monitor has no H-drive to HOT. I replaced IC 701 (TDA9103). Unit still has no H-drive. I need to verify proper power sup ply operation but need test point info and voltages. Also what else could be a problem that would cause IC 701 not to output H-drive? HOT and FBT check out ok. |
| I am going to answer my own question (new discovery). The TDA9103 requires 12V to be feeding it at pin 18 (VCC). This unit had 5V at that point. Without at least 10.8V at pin 18 the TDA9103 shuts down. Just prior to pin 18 is J709 which has a crispy resistor in its place. Now I need to know what the value of that resistor was (or was it a fusible link?) hmmm... |
| QUESTION NO. P28-7: Compaq 420 monitor. I need the value of the resistor from pin 5 on FBT to D306. Also, D306 is shorted, possible cause? |
| If this is R320 or R332, either is 1 ohm. The usual cause for shorting of D306, is a bad vertical IC, IC202 = TDA1170. If it is bad, replace it with TDA1175, and also check D205, R215, C202, C203, C204, & C216. |
| QUESTION NO. P27-1: MAG 1795 monitor has no HV. When power is applied the green light comes on and it runs thru the degauss cycle. I replaced TDA9103 IC on the daughter board but still no H drive. The HOT is good and I believe the FBT to be ok. What should the B+ voltage be and where is it measured? What factors would cause the TDA9103 to not output H drive? Is the H drive generated in the TDA9103 or is synced up to an external oscillator? |
| If you have an HV probe, check for about 63 VDC at pin 3 of the FBT, and Vp-p = 1087V at pin 1 of the FBT or at the HOT collector, in VGA mode. If not, a convenient point to check is at D506; at the cathode, I'd expect about 68 VDC, and about 42 VDC at the anode, & about 125 Vp-p. The TDA9103 generates the horiz. drive pulses (pin 21), with H sync coming into pin 17. A TDA9103 IC will inhibit H-drive during the flyback pulse, or if an Xray protect signal is received (pin 16), or if the H-duty cycle pin (pin 2) is made <1 V. The H-drive will also be inhibited if the IC's Vcc is too low, so you might check that the 12V and 5V regulator IC's are outputting proper voltages, and are receiving at least 3V of headroom from their raw supplies. |
| QUESTION NO. P27-10: CTX 2085 monitor powers up screen blank. Also high pitched whine in unit. |
| Check/replace C454 = 10 uF/250V. It can be accessed without having to disassemble the chassis, through a hole in the bottom, under the main PCB. It is also a good idea to check out other electrolytic capacitors as well, especially C121 & C104 = 1000 uF/16V. |
| QUESTION NO. P27-9: Gateway 2000 cs1024ni2 monitor. I was helped by a previous question and found the 2-33k ohm resistors and the series of caps. to b e bad. I also had to replace the horz. output. I replaced this with a ecg cross 2354. This worked long enough to believe it was fixed and throw the original component away. I need the original part number for Q102 and if there was something else besides a weak component that caused this failure to occur. |
| Q102 = BU2520AF. For sure, check all the components in the answer to question P119-9 on the Monitor Repair page, but others may get damaged from the overvoltage fault, so check around. Also, try checking the solder on the drive transformer, and check D502. |
| QUESTION NO. P830-9: Need source and/or cross reference on 8-pin chip labelled "tde 1767dp". |
| TDE1767DP is a high-side solenoid/lamp driver from ST Micro. There is no cross. However, this chip is a high-reliability design, and also can be shut down from external signals or faults, so it may be that your problem is not in the chip itself. So before seeking a replacement IC, use the datasheet at us.st.com/stonline/books/pdf/docs/1517.pdf to check for external faults. If a new device is actually required after all, DERF International, Inc. (www.derf-intl.com), Mitronics (www.mitronet.com), & Nu Horizons (www.nuhorizons.com) are listing the TDE1767DP. |
| QUESTION NO. P911-5: I need the equivalent of AD828 (mini DIP). |
| AD828 is a high-speed (90 MHz), partially-decompensated, voltage-feedback, dual OpAmp from Analog Devices. Substitutions can be tricky with high-speed OpAmps, so it might be best to stick with the original device. Try Newark Electronics (800-463-9275; www.newark.com), or Analog Devices themselves (www.analog.com) for AD828AN. If a substitute must be found, a Linear Technology LT1364 is one possibility; Digikey (800-344-4539; www.digikey.com) carries Linear's line. |
| QUESTION NO. P96-10: I need the manufacturers of LM7001, LA1265 & AN7470 (or suitable equivalents) so that I can find the datasheets. |
| LM devices are from National Semiconductor, LA devices are Sanyo devices, and AN devices are Panasonic (Matsushita) devices. |
| QUESTION NO. P830-3: Hayes accura 56k ext. speakerphone modem model: 5670ID. Need the replacement of microelectronic relay PVT412 or LH1504. |
| Digikey (800-344-4539; www.digikey.com) is stocking both International Rectifier's PVT412, and also the PVT412L (the current-limited version), photovoltaic MOSFET relays. |
| QUESTION NO. P810-7: Where can I find this smt ic LC7930 and LC7985NA or replacement for this ic? |
| Try Dalbani 800-325-2264, or Andrews Electronics 800-289-0300. |
| QUESTION NO. P822-4: We have a number of existing products using the 2SJ44 P-channel JFET. We are looking for something similar to use in place of the 2SJ44 which is now proving difficult to source. The only p-channel FET we have been able to source as a possible alternative is the Motorola 2N5462/5. This has a forward transadmittance that is lower than the 2SJ44, and does not perform as we require. |
| If you only need small numbers of JFET's, both B&D Enterprises (800-458-6053; www.bdent.com) and MCM Electronics (800-543-4330; www.mcmelectronics.com) are still listing 2SJ44. If larger numbers are needed, check if your circuit will tolerate a JFET with a voltage rating of 30 Volts instead of 40 Volts (they usually will). If yes, your best substitute, using non-Japanese JFET's, is J270 (J177 is almost as good). These two are far closer to 2SJ44, in Vpinch and transconductance, than is your 2N5462. Avnet-Marshall sells J270 in quantity, but if you only need a few J270's, for trials, Newark Electronics (800-463-9275; www.newark.com) still has a few available in the US only. If the full 40 Volt rating is required, after all, 2SJ68 is one alternative. |
| QUESTION NO. P87-2: We need a source for three components; an 8-pin ic that appears to be a Harris product with the #'s 7555, an 8-pin ic by Maxim with a part # ICL7660, and the last one is a hard one. The package looks to be a TO-92 size with the following on it C144 T.SP. We are unsure of the device type on the last one, also. |
| The Harris part (#7555) is a standard 555 timer and the maxim part (IC7660) is a +5 to -5 volt convertor. Both may be obtained at Digi-Key 800-344-4539. I believe to TO-92 device is a standard 2n2222 transistor. |
| ICM7555 is a Harris/Intersil low-power CMOS '555' Timer IC; some alternatives to the Harris part include TI's TLC555, National's LMC555, and ST Micro's TS555. The 7660 is a Harris/Intersil ICL7660 charge pump voltage convertor IC; usually the part also has an important suffix, affecting operating voltage and output ratings. If your Maxim IC version is the original type, Intersil's ICL7660CPA, NJR's NJU7660D, or TelCom's TC7660CPA are alternatives. Mouser Electronics (800-346-6873; www.mouser.com) and Digikey (800-344-4539; www.digikey.com) are possible sources for the '555' & '7660 devices. The higher-rated ICL7660SCPA IC is listed by MCM Electronics (800-543-4330; www.mcmelectronics.com). The description of the C144T.SP does not absolutely identify it, but it may well be a Rohm DTC144TS, an NPN transistor with an internal 47K ohm resistor going to the base. Confirm this, by checking the datasheet at www.rohm.com/products/databook/tr/pdf/dtc144te.pdf If this is the device, a substitute could be 2SC3899, listed by MCM Electronics or Union Electronics (800-648-6657; http//ued.net/index.html). |
| QUESTION NO. P84-2: I need a substitute for a Motorola #MRF5211LT1. |
| Within the US, Newark Electronics's online site (800-463-9275; www.newark.com) claims to still have a few MRF5211LT1 in stock. |
| QUESTION NO. P82-10: I need the equivalent for a transistor referenced A992 FA08C in a Kenwood amplifier. |
| The transistor referenced A922 is a SANYO one. The all useful reference is 2SA922 - F. You can find this transistor in a Kenwood SAV center. See http www.kenwood-electronics.fr. |
| QUESTION NO. P725-6: I need a source and replacement of the Motorola transistor type MJ8505. |
| Motorola recommended MJ16018 to replace MJ8505. Newark Electronics (800-463-9275; www.newark.com) does list MJ16018. |
| QUESTION NO. P628-9: I need a datasheet on uPD7508hg manufactured by NEC. |
| Try B&D Enterprises Tech support 814-757-8300 or www.bdent.com. |
| QUESTION NO. P67-4: I am looking for a cross to a discontinued Motorola SCR part number HEP-R1211. |
| You can replace with tls107-05 or ecg5453. |
| QUESTION NO. P77-8: I need a source or substitute for 2N5470 RF transistor. |
| 2N5470 is an N-channel JFET. You could substitute the inexpensive and readily available 2N5486 JFET. 2N5486 is available from Mouser Electronics (800-346-6873; www.mouser.com), Radioshack.com (www.radioshack.com; 800-843-7422), or Newark (800-463-9275; www.newark.com), among others. If you need the original, you might try D. W. Electronics (www.telepath.com/dwarders; 800-370-3390). |
| QUESTION NO. P77-2: Identified a faulty semiconductor. 3 Pin looks like isowatt220 (TO220 in platic package). Markings are Japan K2128 (M) 58. Where can I find what it is and a replacement? |
| This is 2SK2128, an N-channel MOSFET made by Matsushita, rated at 800 Volts, 2 Amps, 40 Watts, Rds[on] < 7 ohm. A possible substitute could be Toshiba's 2SK2700, which is listed by Digikey (800-344-4539; www.digikey.com). |
| K2128 is actually mosfet 2SK2128.Dalbani 1-800-325-2264 , price 2.95 each. |
| QUESTION NO. P69-5: 60A battery charger has a pair of shorted SCRs. I need replacements for AEGIS "A2N50.04i". There is also a mark saying "ndBros". |
| No one seems to have heard of "Aegis" but IR 50RIA60 is a good substitute SCR. |
| QUESTION NO. P619-9: Description or datasheet and equivalent (the most important) of 2SK1608 needed. It is a Japanese transistor. |
| 2SK1608 is a Matsushita N-channel MOSFET, in a TO220F case, rated at 500 Volts, 5 Amps, 50 Watts, Rds[on] < 1.7 ohms, Cis = 700 pF. One possible equivalent is 2SK1805. An IRF830, STP5NA50, or NTE/ECG 2398, with insulating hardware, might also substitute. Mouser Electronics (800-346-6873; www.mouser.com), for example, lists IRF830 and STP5NA50, and B&D Enterprises (800-458-6053; www.bdent.com) is listing 2SK1805. |
| QUESTION NO. P69-4: I need info about ics' TDA4600 (pinout etc.). |
| TDA4600 and 4600-2 TV, SMPS CONTROLLER. Cross to ECG7002. Have used ECG and works well. If you need the pinout, you will need the ECG manual. Try http//www.ecgproducts.com. |
| Pin 1 referene voltage Please
state if Ic is a 9 pin or 18 pin. Pin 2 zero crossing detector Pin 3 input control Pin 4 Ic simulation Pin 5 external function Pin 6 ground Pin 7 DC output Pin 8 pulse output Pin 9 input |
| QUESTION NO. P614-6: Where can we buy the depleted 757N integrated circuit from Analog Devices, that is a logarithmic amplifier with positive inputs? We have found only the 757P integrated circuit. |
| Analog Device's full number would be AD757N. DERF-International (www.derf-intl.com; sales@derf.com ) lists both AD757N and AD757JN. |
| QUESTION NO. P69-10: I need the manufacturer or where to find a datasheet for KIA6278. |
| The datasheet can be obtained at www.bdent.com/schematics/KIA6278.pdf as a PDF document. The manufacturer is Korea Electronics Corp (KEC). |
| QUESTION NO. P511-1: Dell D1028 Color Monitor (Philips Chassis CM 6800). I need the transistor type for Q7523 part no 4835 130 47173 in respect of this chassis. |
| Q7523 is a BC558C transistor. |
| QUESTION NO. P62-9: I need a source and datasheet or sub for transistor 2SK1745. |
| B&D Enterprises (800-458-6053; www.bdent.com), and Union Electronics (800-648-6657; http//ued.net/index.html), are listing 2SK1745. This is a Toshiba FET, rated 500 Volts, 18 Amps, 150 Watts, Rds[on] < 0.36 ohm. Possible subs include 2SK785 and 2SK1498. If needed, B&D lists both of these subs, and Union lists the 2SK785. NTE2394 might possibly sub, as well. |
| QUESTION NO. P531-10: I need a datasheet or pinout on uPC1883 manufactured by NEC. |
| The datasheet is at www.bdent.com/schematics/UPC1883.pdf , in PDF format. |
| QUESTION NO. P510-1: I need a source for the component K2128 or a replacement. I assume it is a thyristor. |
| The K2128 is a mosfet 2SK2128. You can find the specs at the following http//www.mec.panasonic.co.jp/sc/e-data/L80/S01/2SK2128.pdf. I do not know who stocks it but with the specs you might be able to match it. |
| QUESTION NO. P55-1: I need a datasheet for ic m54630p or replacement part. |
| M54630P is listed by B&D Enterprises (800-458-6053; www.bdent.com). |
| QUESTION NO. P518-7: I need a source or substitute for a 2N388A NPN Ge transistor. |
| NTE (www.nteinc.com) recommends its NTE101 transistor to replace 2N388A. |
| QUESTION NO. P517-9: Where can I get the datasheet for Power mosfet 2sk176? |
| Hitachi no longer makes this part, so the datasheet is not on-line; you may need to contact them directly if you absolutely need it. If some specs are sufficient, this Mosfet is rated 200 Volt, 8 Amp, 125 Watt, transconductance is 1 Siemen (typ.), 800 pF Ciss (typ.), 15 pF Crs (typ.), Rds[on] < 1.5 ohm @ 4 Amp. TO3 case pinout is pin#1 = gate, pin#2 = drain, case = source. |
| QUESTION NO. P512-7: I need a source or substitute for CR2424A - Motorola single video amplifier. |
| The Motorola CR2424A is obsolete. Philips also made a version of this, CR2424S. Try DERF (www.derf-intl.com) for them, or Avnet-Marshall (www.avnetmarshall.com) for the Philips CR2424S. |
| QUESTION NO. P59-7: I cannot seem to find a STK2038 integrated amplifier on the market. Can I replace it with a STK2038 II? |
| STK2058 II is an improved version of the STK2058. Many STK Series parts have "Mark 2" equivelants. Circuits designed for the original STK part will work with the "Mark 2" upgrades, but the "Mark 2"s cannot always be replaced by the earlier versions. |
| The STK 2028>2038>2048>2058>2068 (Flat & MK IV) have 16 pins where the MK II of theese ICs have 22 pins also see SVI2003 & SVI2004A (16 pin, integral prot circuit pins 6,7,10,11). |
| QUESTION NO. P54-7: I need an equivalent and source for ic DG191 or TL191. |
| DG191 is a dual SPDT analog switch using JFET transistors, and has been made by several manufacturers. TL191 was the DG191 version made by TI. JFET-based analog switches have been largely replaced by CMOS-based switches, like DG403, IH5043, MAX303, and MAX4632. Arrow Semiconductor (www.arrowsemi.com) lists Vishay-Siliconix's DG191AP as available for on-line ordering; Rochester Electronics (www.rocelec.com) lists both DG191AP and DG191BP. Both these companies have worldwide offices, which are listed on their websites. The CMOS switches are liable to be cheaper than DG191. |
| QUESTION NO. P51-4: Where can I find the IC LM1205A? |
| You can probably get these at Data Display (in Canada) 1-800-363-2141 or its parent company Computer Component Source in the USA. Sorry, I don't have their phone number. |
| QUESTION NO. P425-8: I need a datasheet and/or a cross reference for two transistors with partial part numbers. C4507 and C1741 on a PlayStation. |
| 2SC1741 is a TO92 power amp, and 2SC4507 is a 400 Vceo high-speed switching transistor, TO220F, with an extra high gain for this type. Both original transistors are listed by Audio Lab of Georgia (800-554-9248; audiolab.home.mindspring.com); B&D Enterprises (800-458-6053; www.bdent.com); and MCM (800-543-4330; www.mcmelectronics.com). |
| QUESTION NO. P418-10: I need an equivalent and source for L78R12 which is a 4-Pin transistor used in Compaq monitor. |
| This transistor is 215496 which is the V/U RF Switch. |
| QUESTION NO. P417-8: I need a source or equivalent for a Sony CXA1213S jungle I.C. Are CXA1213 AS and CXA 1213 BS the same as CXA1213S? |
| Yes, the CXA1213AS and BS are a suitable replacement for the CXA1213S. These are later versions, with "BS" being the latest. |
| QUESTION NO. P46-1: I need a sub for Peavey transistors 70471180 and 70481180. The only type I found is sj71180 and sj81180 but I cannot find them. |
| The Peavey transistors you are looking for (70481180 and 70471180) are considered obsolete by Peavey and are no longer available. www.peavey.com has a very informative piece called semi-conductor/transistor cross reference list. The pair of TO-3 audio transistors were originally SJ-6552, in house #81140, a npn 140V driver you replace with Motorola's MJ15018, and SJ-6553, in house # 71140, you replace with the MJ-15019. Notice here that they use odd numbers for PNP's and even numbers for NPN. I would be concerned as to why they blew in the first place, and what other components also bought the farm. I have found the Peavey products to be well made & designed USA stuff, and outside of a bolt of lightning they should play on for decades. |
| QUESTION NO. P45-9: I need a source or sub for Sanyo # STK2028 or RCA # 200759. Also, I need a datasheet for these parts. It is out of a Technics receiver. |
| STK2028 is available for $19.45 from Suburban Electronic Wholesalers (800) 341-5353 http//www.suburban-elect.com. |
| QUESTION NO. P413-6: I need either a source for or direct replacement of an 8205 UART Chip that was produced by Intel. Intel discontinued them. |
| Try Union Electronics (800-648-6657; ued.net/main.html), or Alltronics (408-943-9773; www.alltronics.com) for this component. |
| QUESTION NO. P411-5: I am trying to locate a source of supply for the following ICs UDN2993B and UCN5804B. They are 16 pin devices. The only other case markings are NX301GB3R. I am assuming that they are digital devices. They are used together to control a stepper motor. The overall circuit appears to consist of 2 inputs and 4 outputs with a +5V, +28V constant supply and a ground. The UDN2993B is the output device. The end item application is for a vehicle simulator originally manufactured by Daedalean Inc, currently out of business. |
| Newark Electronics (800-463-9275; www.newark.com) is listing both UDN2993B (Newark Part# 09F1714) and UCN5804B (Newark part # 09F1557). These driver IC's are manufactured by Allegro Microsystems (www.allegromicro.com), so check their website for additional sources or for technical information. |
| QUESTION NO. P47-9: HF Transmitter, found DTG-110B TO-3 germanium transistor is s/c. After an alternative or a site where I can get this part. No one has spares in New Zealand. |
| DTG110B is rated at 90 Vcbo, 40 Vceo, 25 Amp, gain 65-100 @ 1 Amp Ic, Vce[sat] < 0.5V @ 5 Amp Ic; 850 KHz. These specifications are pretty close to the NTE179 replacement transistor from NTE (www.nteinc.com). NTE currently lists no distributors in New Zealand, although they do list an Australian distributor. See their webpage, for contact information for their distributors worldwide. |
| QUESTION NO. P45-4: What is the name of the transistor (may be something else) with 'E.5' marker on top and SOT25 package? |
| E5=Toshiba one gate logic TC7S04F (invertor). You can find it on Toshiba's website. |
| QUESTION NO. P46-10: I need a datasheet for a optocoupler PC017 or PCD17 (hard to see what it says). |
| If that character is difficult to read, your optocoupler may well be PC817, and that datasheet is at www.sharp.co.jp/ecg/db19992000/pdf/pcoupler/pc817.pdf. This would be a device manufactured by Sharp ECG of Japan. |
| QUESTION NO. P328-1: Where can I find the data sheet of a transistor name '8050c'? |
| There are several transistors with this base number. If it has a TO92 package, it might be either a Samsung/Fairchild SS8050C, or a Korea Electric Co. KTC8050C. Their datasheets are at www.fairchildsemi.com/ds/SS/SS8050.pdf and at dyna.kec.co.kr/search/DataBook/Pdf/KTC\8050.pdf. If one of these is not the correct one, you will need to provide more description, of the part, and of what device it is in. |
| QUESTION NO. P324-8: I need to know the pin-outs of both "IP323AV-05" and "LM323K" voltage regulators. I am replacing the IP323AV-05 with it's TO-3 cased counterpart. |
| For the IP323AV-05 (left to right), pin 1 is input, pin 2 (and case) is ground, and pin 3 is output. For the LM323K, the case is ground; looking at the pins, with the LM323K case turned so the pins are above the midline, the pins 1 and 2 (left to right) are input and output. |
| QUESTION NO. P317-2: Sanken SI-1050GS 50W audio I.C. but Sanken has discontinued it. Where can I find the spec. sheet/pinouts? Also is there a National Semicondutor substitute? |
| You can check the I.C. Master book to see if there is someone else that made (or makes) a replacement part. I have found several parts had replacements that I did not know about. Then find a large commercial electronic component distributor and see if they can help locate one. Conventional Parts houses do not have the resources of some of the big guys! |
| QUESTION NO. P316-10: In DC drive card is a suspected UAA146 phase contol IC generating trigger signals for SCRs. It is not generating any pulses. Where can I get its datasheets/applications notes? This ic is manufactured by 'TFK', what does TFK stand for? |
| "TFK" stands for "Telefunken", a german semiconductor manufacturer. The new name is temic (www.temic-semi.de), but they do not make the UAA146 any more (this chip is rather old) so there is no data sheet on the web. You might get the chip from some special distributors like dialelectronics. |
| You can download the data sheet for TFK UAA145=UAA146 at web site www.elektronikservice.de/Sheets/uaa145.pdf. Also you can find some ic's in stock at Schuricht Elektronik or Nedis. |
| QUESTION NO. P315-9: I am looking for specs, manufacturer and possible replacement for T5Z27 - 4E. It is found in ABS controlling computer in some cars. |
| Toshiba's 5Z27 (the T = Toshiba) is a 5 Watt, 27 Volt Zener Diode, especially designed to withstand high ampere load-dumps. Given the safety issues involved, if your Toshiba supplier cannot provide the original, it would be best to stay with a heavy-duty, automotive-rated component, like Motorola/ON Semi's MR2535L, or ST Microelectronic's LDP24A. Newark Electronics (800-463-9275; www.newark.com) stocks the MR2535L. In a pinch, a 27 Volt TVS, like 1.5KE27A, would be preferable to using an ordinary 5 watt zener in this application. |
| QUESTION NO. P39-5: I am looking for a cross reference match for an Teccor HS-10 and HS-20. |
| HS-10 and HS-20 are discontinued, with no replacements. For the HS-10, snipping off the (center) gate lead from MBS4992 or MBS4993, should allow the (now two-lead) device to substitute for HS-10. Radioshack.com (www.radioshack.com) is stocking both MBS4992 and MBS4993, as cat. nos. 900-3157 and 900-3158. Since the switching voltage of HS-20 is twice that of HS-10, possibly placing two devices in series might substitute for HS-20. |
| QUESTION NO. P37-7: I need equivalents and a source for MJH16006A, Power Transistor 8A 500V SM3 NPN(Motorola) and details of Thermistor SG39 & it's manufacturer's name. |
| MJH16006A is listed by Newark Electronics (800-463-9275; www.newark.com), as Newark part# 07F8469. SG39 is a Surge-Gard Inrush Current Limiter (NTC), it was made by RTI Electronics (www.rti-corp.com). To cross it, its resistance at 25° is about 12 ohm, Imax is 4 Amps, and about 0.25 ohms at Imax. |
| QUESTION NO. P215-4: What are the best replacements to btb10-600bw? This is a snuberless triac 10A 600V. |
| Mouser (800-346-6873; www.mouser.com) is listing this very Triac in stock (Mouser's Cat.no. 511-BTB10-600BW). A Teccor Q6010R5 Triac might also be an equivalent. |
| QUESTION NO. P214-6: I need the value of the Transistor 2SC5148. |
| 2SC5148 is a Toshiba HOT, 1500 Vcbo, 600 Vceo, 8 Amp, 50 Watt, gain 4-8 at 5 Amp Ic, Tf < 0.3 usec, Tstg < 4 usec. A Sanyo 2SC4923 should be similar. |
| QUESTION NO. P120-9: Where can I get information about IC BA6840FP or replacement? |
| This is a Rohm IC (www.rohm.com); get information about it off the PDF datasheet at www.rohm.com/products/databook/motor/pdf/ba6840bfs.pdf. |
| QUESTION NO. P111-10: I need a complete datasheet for a transistor (HOT) THD300 from SGS-Thomson and transistor with a code ZBD949 from Zetex. |
| The ZBD949 datasheet can be downloaded from www.zetex.com/pdf/thru.hole/zbd949.pdf ST Microelectronics discontinued THD300, recommending BUH1015 as their replacement, and the THD300 datasheet is not on their website. Maybe try contacting them directly for this datasheet ( www.st.com ). |
| QUESTION NO. P16-7: Looking for a parts hotline to locate an IC STK2028 or a suitable substitute. Have been able to find an STK2028 MK2, but not a schematic for this to check the pin configuration to see if it will in fact work. |
| Try Union Electronic Distributors (800-648-6657; www.unionel.com) . |
| QUESTION NO. P1022-5: I need a Sony parts distributor in Miami or another place in Florida. |
| Sony parts can be ordered from Herman Electronics in Miami. Telephone is 800-938-4376 or locally at 305-634-6591. |
| QUESTION NO. P1028-5: Where can I get the IC M51387p 's data sheet? |
| The M51387P crosses to NTE7120, so see the datasheet for this NTE7120 sub, at www.nteinc.com/specs/7100to7199/NTE7120.html on the NTE website. |
| QUESTION NO. P1014-7: Where can I buy Sony parts in Miami? |
| Tritronics carries Sony parts, and one of its branches is in Miami, at 1952 NW 93rd Ave., Miami, FL 33172 ; Tel.# (800)365-8030, (305)639-9991. |
| QUESTION NO. P107-10: I need equivalence for the following transistors: 2SA836, , 2SC134, , 2SD478, 2SB568, 2SA758, 2SC898, 2SC458, 2SA844, 2SC458, and 2SC1213A. |
| B&D Enterprises International, 800-458-6053 (www.bdent.com) lists all the original transistors in its stock, except for 'C134', so there is no need for equivalents on those. Remember to include "2S" in front of each of these Japanese transistor codes, for their complete transistor number. For example, the 'C134' is actually 2SC134, for the complete number, and so forth. B&D does list 2SC3393, which is a potential equivalent for 2SC134, in their stock, as well. If required, B&D can ship internationally, see their webpage for details. |
| QUESTION NO. P824-10: I need datasheets for an Omron DIP IC, made in Japan, labeled "EE-CF". I have encountered it on different boards in 4 pin, 8 pin, and 16 pin varieties. A contact at Omron informed me that the part, as well as information on it, was only available in Japan. |
| These are single, dual, and quad photocouplers; you can download an English datasheet from www.dge.com.au/om/ee-cf.pdf at DGE Systems, an Australian supplier. If you need a substitute, Sharp's PC817 series and NEC's PS2501 series would also be similar. For purposes of matching up a substitute, Sharp's datasheet is at www.sharp.co.jp/ecg/pdf/pc/pc817.pdf and NEC's datasheets are at www.ic.nec.co.jp/opto/english/document.html#Photocoupler In North America, Mouser Electronics (800-346-6873) is stocking the NEC photocouplers, and B&D Enterprises (800-458-6053) is listing the Sharps. |
| QUESTION NO. P727-4: I need a suitable sub for a tz1113, is in a t0-92 package. In the upper left a symbol of a triangle, then the "tz" joined at the top bars with 1113 under that, and what appears to be a date code 8823. Thought it may be a Sprague part, but no luck. |
| This sounds like a Zenith house-numbered transistor. Often, the Zenith part number will use the same base number, so TZ1113 might be Zenith part# 121-1113, for example, so see if your Zenith supplier can cross this one for you. |
| QUESTION NO. P726-3: I need a source for ic st 6220b6 any alternative ic. |
| This is a microcontroller from ST Microelectronics, and because it has several kbyte of preprogrammed OTP memory, there is no way to find a useful alternative IC, or even to find a source, without the IC's program version number, or, at the least, the model and version of the machine the chip came from. ST Microelectronics usually programs these with their customer's proprietary code, so even they will be no help. The customer can prevent readout of the ROM, either by choosing this option during programming, or physically, by blowing a fuse off the TEST pin with an overvoltage, so if either action was taken, then even if your IC's memory bank were still intact, it will be impossible even to copy the programming of your IC onto a blank version of the chip. Your likely options all require knowing the model & version of the machine that has your IC. You might get a used IC off a board from a scrapped machine of the same type; get an IC from the OEM manufacturer, if they will cooperate; or with the machine's model & board version information, try a place like NEI (888-634-7278), who sometimes have preprogrammed micro's for certain machines. |
| QUESTION NO. P615-3: I need the specification of a TL6006 Wire Feed Unit. I asume it is either a transistor or a thyristor. Also, where I could obtain one. |
| TL6006 is a discontinued SCR. Its ratings are 600 Volt, 3 Amp (RMS), and it is a standard-sensitivity SCR (Igt < 15mA; Vgt < 1.5V), not a sensitive-gate type. You should be able to replace it with a 600 Volt SCR of equal or better Amps rating, but if you use a sensitive-gate type, the new SCR may be prone to false-triggering. |
| QUESTION NO. P519-8: Where I can find information about tda2903, tda9611? |
| Try www.questlink.com. |
| QUESTION NO. P56-1: I need transistor# 2SC5250 or equivalent part number. Also any place I may find it. |
| 2SC5250 is a Hitachi device, rated 1500 Vcbo, 8 Amp, 50 W, Tf = 0.2 usec typ., and has an integral damper diode and b-e resistor in the insulated TO3PFM case. In the US, this transistor is listed by B & D Enterprises (800-458-6053). |
| QUESTION NO. P415-5: Where can I get transistor A1242 (for a Fuji Camera System) or its equivalent? |
| 2SA1242 is available from MCM (800-543-4330) or B&D Enterprises (800-458-6053). An ECG or NTE 2525 replacement should substitute as well. |
| QUESTION NO. P42-2: I am looking for a source (or replacement) for a CD4036,TC4036 static RAM IC. I have found it in a overseas component WEB site, but none stateside. |
| Alltronics' webpage, http//www.alltronics.com , lists CD4036AE for $1.49. |
| QUESTION NO. P323-8: Is is possible to use another IC instead of STR-S5741? Where can I get a datasheet? |
| B & D Enterprises (800-458-6053) is listing Sanken's STRS5741 for $ 6.84, and MCM (800-543-4330) lists it for $ 7.79, so why bother with a substitute? To get a datasheet, you would have to contact Sanken, or else their North American affiliate, Allegro Microsystems, http//www.allegromicro.com/. |
| QUESTION NO. P319-1: We are trying to locate an equivalent Mosfet or a source of these obsolete mosfets - 2SJ56 and 2SK176 have all dried up. |
| These Hitachi FETs have an unusual pinout (the TO-3's case is Source, not Drain), so substitutes are difficult. Techsonic (http//members.tripod.com/~techsonic5/html) in Calif. Does list both original FETs in inventory ($50 minimum). Union Electronic Distr. (http//www.unionel.com) lists 2SJ56 only, at $16.84. For Europe, Donberg Electronics (http//www.donberg.ie) lists both FETs in inventory. Also, FETs do not "dry up", so, unless your customer caused both the FETs to fail from abuse, it would be prudent to check for other bad parts that may have caused these pricey semiconductors to fail. |
| QUESTION NO. P222-8: What is a reasonably good substitute for a 2sk560 MOSFET ? Is there anything else besides ECG 2394 ? |
| The 2SK560 FET is rated 500 V, 15 Amp, 100 Watt. Mouser (800-346-6873) is listing these FET's with similar/better specs; Harris's IRFP450 (cat.# 570-IRFP450), $3.68; SGS's STW15NA50 (cat.# 511-STW15NA50), $7.08; also cat.# 511-STW15NB50, $4.69, a low gate-charge version of the "A" type. |
| QUESTION NO. P126-3: In need of xref.# for a Magnavox tvcr model ccs138ato1 UL # 5F52. The parts I need are T7330 and T7310 on the pcb. T7330=TDA4603-3 T7310=P7N4CFI. |
| P7N4CFI is likely a FET. I am guessing the number actually ends in 40FI, not 4CFI, in which case it is STP7N40FI, or else STP7NA40FI, being rated 400 V, 4.1 Amp, Rds[on]<1 ohm, and has an insulated TO220 package. An IRFI730 is a cross for that device, or use IRF730 with insulating hardware. Don't know TDA4603-3, is that also a misread? I have heard of TDA4600-3 and TDA4605-3 devices, though. |
| QUESTION NO. P113-3: Who manufactures the part an5512, a vertical deflection driver ic? Panasonic make ic's starting with 'an', but not this! I need data sheet. |
| Sorry to contradict you, but my Panasonic semiconductor guide lists AN5512 plain as day. It is often the case that semiconductor mfgrs. "never heard of" parts that have been discontinued, which makes getting those datasheets hard. If it is a help, AN5512 crosses to ECG1674, Vcc = 24Volts typ., with this pinout 1) ground; 2) output; 3) n/c; 4) V.supply for output; 5) test point; 6) input; 7) trigger pulse input; 8) pulse amp. output; 9) Vcc. |
| QUESTION NO. P112-7: I am trying to locate datasheets and sources for these parts which are in equipment that is probably 15-20 years old: 2SC2908 or C-2908, 2SC2750 or C-2750, and D-469. The last may be incomplete. I do not know the original mfg. except that they are from Japan. They are all power NPN transistors and all but the first are in TO204 packages. |
| Japanese semis are widely available. I like Diversified Parts at (800) 338-6342, but MCM, East Coast Transistor, and many others have these. I always use them if possible as they are better and much cheaper than ECG or SK replacements. |
| These are all NEC devices, and NEC is not helpful with their older datasheets. My NEC databook currently lists BOTH 2SC2908 and 2SC2750 as being in MP80 cases, a TO3P style, rather than in a TO204 can--perhaps they repackaged the same die into a more modern package. 2SC2750 and 2SC2908 are highspeed power switches. 2SC2750 is rated 150 Vcbo, 100Vceo, 15 Amp, 100W, ß= 30-120 @0.3 Amp Ic; Ton<1 usec, Tfall<0.3usec, Tstg<1.5usec. 2SC2908 is rated 200Vcbo, 100 Vceo, 5 Amp, 50W, ß= 60-320 @ 0.3 Amp Ic; Ton <0.5usec, Tfall < 1usec, Tstg < 2usec. If the "D469" is a 2SD469, that was an NEC TO204 power transistor, but so obsolete even my book has no direct data on it. However, 2SD469 does cross to an ECG280, which is a TO204 power transistor, 140 Vceo, 12 Amp, 100W. Several places, including MCM, have the first two transistors. B&D Enterprises has all three listed in stock, though the 2SD469 is priced at $17, compared to $5.72 for ECG280 at a place like MCM. |
| QUESTION NO. P1029-2: I am trying to find info and pinouts on str s6708 and str s6525. |
| STR-S6708 is a Sanken Offline Switching Regulator w Bipolar Transistor, SIP-9Features Quasi-Resonant Operation for Low EMI and High Efficiency; Output Power to 220 W; Low-Power Output Standby Mode; Pulse-by-Pulse Over-Current Protection; Latched Over-Voltage and Thermal Protection; Third-Generation Switching Transistor with Proportional Drive; Internal Under-Voltage Lockout with Hysteresis Abs.max.values Vin=15V, Vcex=850V, Ic(cont)= 7.5A/15A(peak); Isink-max 1.5A. Pinout1) Collector, 2) Common, 3) Base, 4) Sink, 5) Drive, 6) Over-Current Protection, 7) Feedback, 8) Inhibit, 9) Vin .STR-S6525 is a Sanken Offline Switching Regulator with Power MOSFET, SIP-9 Features include softstart, overcurrent protection, latch for fault mode. Pinout 1)Drain, 2)Source, 3)Common, 4)Sync, 5)Vin, 6)Feedback, 7)Softstart, 8)Fault-latch trigger, 9)Overcurrent protxn. Absolute Max values Vsupply 35Vmax; FET is 600Vmax Drain-Source, Idrain 6A max, 24Amax (pulse), has Rds[on] =1.0 ohm typ.; 200Vrms isolation. |
| QUESTION NO929-9:. P I am looking for a High Voltage Block for a Mitsu VS404R March 1986. Someone said a Company called CRS but they said they only make these parts in bunches and do not expect to make them for awhile. |
| The correct name is CRC Componets 1-800-822-1272. I think the part you need is 920P00501. CRC sells this part for $69.95 + S$H. |
| QUESTION NO. P928-3: I went through the monitor repair article "Driving multiple VGA monitors" by Michael Swartzendruber. I want to construct the circuit but ECG2322 transistor array is not available in Bangalore. Can anyone suggest me the equivalent for the same? I would also require the specifications of ECG2322. |
| See the answer for Question P429-8 on the Components Answer page. |
| QUESTION NO. P928-4: I need a TLF14656F flyback Where can I find one? |
| The device number indicates either a Quasar or Panasonic manufactured piece of equiptment. Either company's parts division should be able to supply you with the component, if not over 7 years old. |
| QUESTION NO. P98-6: The Sharp optoisolator S21ME4 is used in brand of laserjet printer Kyocera FS3500A. It works with another eletronic component (BCREPM ?). This component is burned and I cannot view the identification. Please, send me information about this component. |
| The "BCREPM" is probably a Triac. S21ME4 is a Triac-output optoisolator used for driving AC devices like Triacs. Your partial part number does not match anything, but a Mitsubishi Triac would have a part number like "BCR5PM", or "BCR8PM", etc, so check if the "E" in "BCREPM" is really a "5", "6", or "8". This would indicate either a 5, 6, or 8 Amp Triac, respectively, in an isolated TO-220 case (8 Amp is most likely). Since the S21ME4 is rated for 600 Volts, your Triac would also need a 600 Volt rating. By Mitsubishi's naming system, this would make the full part number BCR8PM-12L (or BCR5PM-12L, etc.). In the US, B & D Enterprises (sales@bdent.com) lists Mitsubishi's BCR8PM-12L (600 V, 8 Amp) for $4.38. The "L" indicates this Triac can drive inductive loads, like motors, etc, safely. Powerex also makes their own version of these Triacs. |
| QUESTION NO. P915-6: I need any information about ODIN 12C887A RTC chip used in my computer. Apparently this part is discontinued. I was using similar chips from Motorola and Dallas (1287) in my designs but without specs on ODIN part, I cannot be sure which would be closest equivalent to order. The message on the screen reads that the battery for CMOS Memory is low. After restoring settings for hard drive and saving it, they are going back to all zeros even if I do not shut the power off. That leads me to the conclusion that RTC itself is not working properly. |
| First, you really should replace the backup battery and confirm the cmos data is correct. The battery voltage being too low can corrupt the data even though the system power supply is functioning. |
| The onboard batteries on such devices do die after 5-10 years, but faster in warmer locations. See information on website page http//www.resource800.com/ho01006.html about replacing the Odin OEC12C887A with DS12887A, and replacement procedures. |
| QUESTION NO. P817-5: Necesito saber un reemplazo para el ha11229 |
| ECG1575 or NTE1575. |
| QUESTION NO. P818-4: Technics SU-C 03 for repair. A hybrid (stk 3062) used as a voltage amplifier was blown up. Since the part was no longer produced, I replace it with a STK 3062 III which I thought would do just the trick. It worked fine except for generating a sine wave on 4 MHz!! which the power amplifiers luckily could not handle. What went wrong? I was unable to find any pinouts for any of the chips. |
| Be advised that Sanyo does NOT list STK3062-III as an adequate replacement for STK3062, in their selection guide's "replacements" listings for discontinued IC's. In fact, they do not list any of their more recent hybrid IC's as a replacement for that one. Techsonic (Foster City, CA, email techsonic@rocketmail.com) does list STK3062 itself on their inventory webpage, however. |
| QUESTION NO. P813-7: I need a source for an STK014. It is no longer manufactured. Is there somewhere I might find one? It is out of a Sansui Stereo receiver model 331. |
| Techsonic (techsonic@rocketmail.com) lists STK014 in their inventory. Because of their $15 surcharge for orders under $50, you may wish to check their extensive listings (it goes on for several webpages) at http//members.tripod.com/~semiconductor/html for other devices useful for your repair business. |
| QUESTION NO. P824-4: Where can I get a replacement for a 2sk1649? All of my sources cannot locate this Transistor. In the UK? |
| B & D Enterprises (USA, Tel.# 814-757-8300, FAX# 814-757-5400; $15 US minimum charge plus shipping) lists 2SK1649 for $7.45 a piece, and can do foreign orders. But if your UK sources can provide you with 2SK872, a FET similar to 2SK1649, that might be a quicker and cheaper alternative overall. |
| QUESTION NO. P720-3: I need an equivalent number for a C4908 or datasheet to find a replacement. |
| 2SC4908 is a Sanken high-voltage, high-speed switch, rated 800 Vceo, 3 Amp, 35 W, min. gain 10, Vce[sat] 0.5V at 0.7 Amp Ic, in an insulated TO-220 case. The closest match for a sub is Sanken's 2SC4304, which MCM Electronics (800-543-4330) lists, along with several similar devices 2SC3559, 2SC3752, 2SC4234, that might be tried if that 2SC4304 is gone. |
| QUESTION NO. P629-3: I need phone # to order part for rca chipper check hookup. Part is a pomona 5108 ic test clip |
| ITT Pomona is at 909-469-2900. You may prefer ordering from your local Pomona representative. See http://www.ittpomona.com/html/us_reps.html for that list. |
| QUESTION NO. P616-2: I need the data sheets and substitute for the following transistors C4916, C4742 and C3883. |
| These transistors are all horizontal output transistors with internal damper diodes: 2SC4916 (7 Amp H.O.T., Toshiba), 2SC4742 (6 Amp H.O.T., Hitachi), and 2SC3883 (5 Amp H.O.T., Hitachi). For the datasheets, the manufacturers may help you out, but it's not very likely, since they're out of production. Subbing H.O.T.'s is always chancy, but the original H.O.T.'s are apparently still available, so why risk using subs? To name one source, MCM (800-543-4330) lists all three of these transistors in their stocks. |
| QUESTION NO. P617-1: Dell Trinton monitor D1526T-HS that has part Q507 bad. Q507 is a transistor with number C5129. I can not find where to order the part. |
| MCM (800)543-4330 has it listed for $8.99. Dalbani (800)325-2264 has it listed for $6.75. CCS probably also has it (800) 356-1227. |
| That transistor is 2SC5129. This has been listed as stocked by LJ Enterprises (800-627-8755), MCM Electronics (800-543-4330), and Centerpointe Electronics (800-272-2737), among others. Please note that, although this Toshiba transistor is insulated, the insulation is thin, and has been known to occasionally break down under high voltage, if mounted on a metal heatsink without an insulating washer and heatsink grease! |
| QUESTION NO. P610-4: Sony CPD-1604S. The HOT is shorted and on order, Q901 also appears to be shorted,causing the outputs from the SMPS secondary windings to be shorted to ground thru Q901. Can anyone tell me what type of device Q901 is. It is a "NEC" device. |
| Q901 is an SCR (silicon-controlled rectifier). The usual NEC SCR's used are either 5P4M (TO-220, tab not insulated) or 5P4SM (insulated tab TO-220); both are rated 400 Volt, 8 Amp RMS, 10 mA Igt. Teccor recommends their SCR's number S4008L (insulated) or S4008R (not insulated) as subs for these, around $1.50 each. Digikey (800-344-4539) and Mouser (800-346-6873), among others, stock these Teccor SCR's. |
| QUESTION NO. P528-5: I need a replacement transistor from a AST Vision 7L monitor. FCC ID GWGRMO-RTO7FXX. The transistor needed is labeled Q350 on the circuit board. I have not been able to locate schematics for this monitor. The transistor is damaged, there are numbers on it that partially legible. My guess is that the numbers are 5001 541, but have not been able to cross reference this with anything. |
| In the AST 7L where I changed a Q350, its markings did not match that number (maybe different OEM's?). In the unit I fixed, a zener ZD301 and a cap C301 had also blown, and the ultimate cause was bad solder on the heat-sinked damper diode D303. In case they're similar units, though, Q350 in my unit was a TO-92 style NPN digital switching transistor, the kind with two equal-valued resistors in series to form a voltage divider, for driving the transistor's base with half the input voltage. This transistor type usually gets used to make a TTL-type input compatible with the transistor (i.e., no turn-on by TTL "low" = 0.8V or less); mine worked fine subbing an NTE2355. Or maybe you can still measure the combined value of the two series resistors on your DMM, across the two outer pins of your Q350 out of circuit, and pinpoint the exact type needed. The usual digital switching transistors are rated 50 Vceo, 0.1 Amp Ic, with similar gains and speeds, regardless of brand, it's just the internal resistor make-ups that vary. |
| QUESTION NO. P65-1: I need a transistor 2SK611 for a Mitsubishi HL7955SBK monitor. Some suppliers have suggested 2SK612 but specs don't match. |
| Except for 2SK611's lower input capacitance (Ciss) and faster speed, most of the differences in specs with 2SK612 reflect better performance than for 2SK611. If that lower input capacitance disturbs you in using 2SK612, Newark Electronics (800-463-9275) lists several IRF devices in their stock, that have Ciss values and speeds closer to 2SK611. But first, do you have the thru-hole leaded version, or the SMD "Z"-style version, of 2SK611? That will affect any choice of sub--it's not advisable to try to interchange the two styles. If you have a thru-hole 2SK611, devices listed (in order of increasing Ciss) include: IRFU214, IRFU110, IRFU222, and IRFU120. If your device is actually the SMD 'Z' package, IRFR210, IRFR214, IRFR310, IRFR110, and IRFR120 are listed in stock by Newark. These IRF devices are ones that will meet or exceed 2SK611's capabilities in terms of other specs. |
| QUESTION NO. P528-4: I need to get an STK3042II IC for a Marantz receiver but I cannot find it here in México. I can get STK3042III and STK3042 are any of these similar or equivalent? |
| I do not know if this company can deliver to Mexico or not but they will have what you need http://www.mcmelectronics.com |
| QUESTION NO. P528-2: I need a part number or a cross reference for a horizontal transistor used in a Compaq Model 1525. The location on the circuit board is Q403. It is identified as C5296. Just below this number is another number 6E2. |
| 2SC5296 is the part number. Use an exact replacement or reliable sub. When replacing the transistor, run unit @ reduced input power and check operating temperature of the device. Excessive temperature, especially in a short time, indicates either a defective flyback or a short in derived power supply or loads. |
| QUESTION NO. P518-8 & P519-2: I am looking for "NT405F" TO 220J case have not been able to find or cross. |
| This transistor may be a copy of SGS-Thomson's BUF405FI (or its successor, BUF405AFI), which is a high voltage switching transistor, pinout BCE. NEC is known to copy other mfgr's transistors and label them as "NT" plus the original part number. You can download the datasheet for BUF405AFI, a 450 Vceo, 7.5 Amp, 40 Watt switcher, from http://www.st.com/stonline/books/pdf/docs/5245.pdf Possible subs for that device, if your SGS supplier does not stock this one, include NTE/ECG 2337, 2SC3973/A, 2SC4220, 2SC3871. |
| QUESTION NO. P519-8: I need the data sheet of l4981. I also want to know where I can buy l4981 and mc33065 in China. |
| L4981 is a power-factor correction IC from SGS-Thomson. You can download its PDF format datasheet from: http://www.st.com/stonline/books/pdf/docs/1366.pdf SGS-Thomson lists 8 distributors for their products in China, located in Hong Kong, Hong Kong (N.T.), and Shenzhen, you can get their contact information from the menu at: http://www.st.com/stonline/distrib/index.htm MC33065 is a Motorola dual current-mode controller IC, for the industrial temperature range; MC34065 is similar, but for the commercial temperature range. Motorola's distributors in China are listed here: http://motserv.indirect.com/sales/china.html. |
| QUESTION NO. P520-1: I need the data sheet of OKIm5839, OKI5838, la6324n, hd61830. Can someone help me? |
| OKI Semiconductor's website can be searched, starting at: www.okisemi.com; to download their datasheets, you first need to register with them online. The MSM5839 LCD display drivers (B and C versions) are mentioned on that site, but not 5838, so recheck that second part number. Sanyo's LA6324N is really just their version of the common quad opamp LM324, whose datasheets are widely available, but if you wish to download their datasheet anyway, do so by searching that part number from Sanyo's site at: http://www.elisnet.or.jp/login-sanyo.htm Hitachi's LCD timing controller HD61830 datasheet is available as a PDF file (PDF doc.#99cd0), by searching that part number at Hitachi website: http://www.halsp.hitachi.com/tech_prod/index.htm. |
| QUESTION NO. P518-6: kds1730 monitor which after 5 minutes of warmup has a severe pincushion. IC stv7778 is temperature sensitive. I cannot find info on this chip. |
| STV7778 is a Multisync Deflection Processor IC from SGS-Thomson. It is a 42-pin DIP, and provides horizontal, vertical, and E/W parabola pincushion deflection signal processing, as well as B+ regulation and screen blanking functions. Pin# 36 is the output for pincushion E/W correction, while pins# 37 and 38 are the DC control inputs for adjusting pincushion and keystoning. For more information, download its datasheet (PDF document# 1826) from the SGS website http://www.st.com/stonline/books/index.htm NEI (888-634-7278) lists these IC's in their stock; for their information, check their website at: http://www.neiparts.net/semiconductors.html |
| QUESTION NO. P511-7: Where can I purchase a Goldstar IC, GVC08001? It is IC202 in a Packard Bell 1010 monitor. I have tried MCM, CCS, MAT, and Dalbani. |
| Sources for Goldstar components include: Goldstar America, 800-777-1192; Astro Electronics, 800-252-7788 or 847-364-2480; Shine Electronics, 800-221-0404 |
| QUESTION NO. P429-8: Please help to identify the ECG2322 quad transistor pack, used in the article "Driving Multiple VGA Monitors". I could not find it by searching. A data sheet would be extremely useful to replace it with discrete transistors with similar parameters. |
| The specs: pnp si quad gen purp amp., sw t on
=30ns t off = 225 ns, collector to base volts =60, collector to emitter volts=40, base to
emitter volts=5 max, collector current=.5 max, device diss watts=.65 unit, 1.9 total, freq
in mhz=350, current gain=100 min. Pin assignment as follows 1c 2b 3e 4nc 5e 6b 7c 8c 9b
10e 11nc 12e 13b 14c. A PNP discrete like 2N2907A (or the MPS or PN equivalents) would seem similar to these values, for purposes of substitution. A circuit running below 20 mA current, though, might substitute 2N3906 discretes instead, as its lower current and power ratings would matter less then, and it is a bit faster than 2N2907A at low Ic. |
| QUESTION NO. P46-8: I need to replace a shorted diode labeled FUF5406 in a BTC color monitor Mod. Nº RH-1450M. Do you have the specs?. |
| UF5406 is a 600 V, 3 Amp, ultrafast rectifier, Trr < 75 nsec. You could sub an NTE/ECG 577 or HER306 for this. |
| QUESTION NO. P42-4: ADDS 4000 terminals previous question #p326-8 concerning part # SA 5.0 A not CA availability? Part # BUL57pi it is an L instead of I its a to-220 and is insulated it was damaged and was unable to read clearly. I still need a cross if there is one. |
| BUL57PI is a high speed switch, rated 400 Vceo, 7 Amp, 35 W., in an insulated TO-220 case. A reasonable sub would be NTE/ECG 2337, this is widely available. Possible Japanese transistor subs are 2SC3870 (Matsushita) and 2SC4161 (Sanyo), both listed by MCM (800-543-4330). |
| Clarification: that P6KE6.8A is similar to, and a possible substitute for SA 5.0A (not for SA 5.0CA), in the earlier reply. |
| QUESTION NO. P42-10: Can you help us to find out the equivalent of 2SJ307? It is dificult to get this component in Indonesia. |
| 2SJ307 is a Sanyo PFET, rated 250 Volts, with Rds[on] < 1 ohm, in an insulated TO-220 case. IRFI9634G, from International Rectifier, is a similar PFET. IRF has a distributor in Jakarta; see contact information on the IRF website at www.irf.com. If local distributors for either Sanyo or IRF are no help, MCM Electronics in the US carries 2SJ307, and permits shipping to Indonesia; their website is www.mcmelectronics.com and email is orders@mcmelectronics.com. |
| QUESTION NO. P325-2: Sansui cassette deck (SC-1110) c1978...need all belts. Any idea what became of Sansui's stock? Is there a good source for belts? |
| Try Dalbani, 4225 NW 72 nd . Ave., Miami , Fl 33166, tel# 1-800-325-2264. They have a large selection of generic belts. Great prices too. |
| QUESTION NO. P324-3: I need the flyback number for a Samtron SC431VII monitor. |
| MSU1FDU61 |
| QUESTION NO. P326-8: Three ADDS terminals model 4000/260 w/same problem: output trans shorted 10v1000uf cap pop'ed and a ???zener diode shorted problem is part numbers do not cross to anything I can find the #'s are BUI57PI zener ? is SA 5.0A 9434 the location is foward of the fbt and the trans is h/s with another transistor. What are these parts? |
| SA5.0A is a transient voltage suppressor, holding at 5V, with breakdown from 6.4 - 7.0V. Its rating is 500W @ 1 msec surge, and it is unidirectional (Vf and Vr reads like a Zener). IF the designator is SA5.0CA, it is bidirectional (like two zeners back-to-back). A similar device is P6KE6.8A, available as #511-P6KE6.8A, from Mouser Electronics (800-346-6873); Mouser does not have SA5.0A, but does list SA5.0CA. I can find no device for BUI57PI, but there is a TO-220 transistor BUL57PI. |
| QUESTION NO. P324-7: Pioneer vsx-d704 with 2 transistor burned and in my country this is very dificult to find. I need the equivalents off this transistors. The numeration is 2SA1145 and 2SC2705. |
| You mention "in my country". If I knew which Country that is I might be able to be of better assistance. Your parts cross to NTE parts NTE32(2SA1145)(PNP) and NTE31(2SC2705)(NPN). This is a complementary pair of audio/vert drivers.The US replacement (closest) is 2N5401 for the 2SA1145, and 2N5551 for the 2SC2705. If you need the European replacement, I should be able to find it. These are a little smaller than the big TO-92 and the 2N parts baseing is different. The 2S parts are ECB and the 2N parts are EBC looking down the leads with the flat up, counting from left to right. |
| European equivalents for transistor 2SA1145 are: BF436, BF423A, BF437. And for transistor 2SC2705: BF297, BF298, BF299. |
| QUESTION NO. P317-8: We require DATA books for NEC, especially Linear Components and also for Fujitsu. Japanese Semiconductor Mfg. Datas are very tough to get. Can some one guide us? |
| If you really want Data BOOKS, you'll almost certainly need to contact NEC or Fujitsu directly. Get contact info off their websites at http://www.ic.nec.co.jp/ (hit the 'English' button if Japanese is problematic), or http://www.fujitsu.com/ . But much useful device information can be obtained online as well. For NEC, get device data from: http://www.ic.nec.co.jp/english/products/index.html . You can download selection guides with data on NEC's linear IC's, transistors, FETs, optos, microprocessors, etc. Often the selection guide data (like for transistor or FET specs) is sufficient. For opamps and comparators, NEC has its own special "uPC" code numbers for many industry-standard types (such datasheets can be found elsewhere), and the selection guide gives a cross-index of these special codings to the 'uPC' version of those standard part numbers (e.g., "uPC151" crosses to uPC741, a '741' type op-amp). The datasheet PDFs for NEC's opto-devices ARE provided online. HINT: sometimes different types of data are available for the same type of device, under different hotlink buttons-- the 'Product Line' nutton vs. the button for 'List of Technical Documents' (incl. selection guides). FUJITSU has information available online from http://www.fujitsu.com/ . Here device information can be accessed either via category, via the Products webpage, or through the online Search engine; there is also a Tech support option. |
| QUESTION NO. P319-3: TV which appears to have a dead D1680 transistor. Can anyone tell me what a suitable substitute would be and give me some specs on it ? |
| Matsushita's 2SD1680 has specs of 330 Vcbo, 200 Vceo, 7 Amp Ic, 70 Watt, in a TO3PF case. Its gain= 15-45 at 5 A IC, 1 Vceo[sat] at 5 A Ic & 0.5A Ib, Tfall = 0.75 usec., pinout is BCE. 2SD1680 is listed by Union Electronic Distributors (Ill.) (800-648-6657), Pacific Semi (Vancouver,BC) (800-663-6731), or Techsonic (Calif.) (techsonic@rocketmail.com). |
| 2SD1428 should suffice if the original horiz output transistor is not avail. Check the damper diodes and the flyback also confirm the B+ is not to high from the regulator circuit. 2SD1737, 38, & 39 should also work and have similar case design as the original. |
| QUESTION NO. P319-1: Anyone have information on repairs required for a dead Gateway CPD-17F23 monitor?? PS is dead and HOT 23c3997 and 2sk1796 are shorted. What are replacement transistors? |
| 2SC3997, the HOT used in that unit, is a Sanyo HOT, rated 1500 Vcbo, 20 Amp Ic, 250 Watt. Best bet is exact replacement, and it is listed by LJ Enterprises (800-627-8755) and by MCM (800-543-4330). 2SK1796 is an NEC FET, rated 900V, 10 Amps, 150 Watt, Rds[on] <1.2 ohm. A FET that meets these specs is IXFH10N90-ND, as listed by Digikey (800-344-4539). NTE2377 is not quite as hefty as 2SK1796, rated 900 V, but only 8 Amps. |
| QUESTION NO. P317-10: Sampo KM-511 monitor that has failed twice by resolution changes. Does anyone know a suitable sub or a distributor for the horizontal output transistor 2SC5148. Also is there a modification that can be done to prevent further failures. |
| Toshiba's 2SC5148 is a 1500 Vcbo, 8 Amp Ic, 50 Watt HOT in a TO3PML case. LJ Enterprises (800-627-8755) may be stocking this device. Although crossing HOT's is always chancy, Sanyo's 2SC4923 is quite similar in its electrical specifications, including gain and Tstg time; MCM (800-543-4330) lists 2SC4923 in stock. See if the unit's video card is throwing a fast voltage spike into the video input horizontal sync line upon changing modes: such spikes have been known to kill HOTs. If so, try using a ferrite bead to suppress this spike. |
| QUESTION NO. P317-9: Star printer NX2460C with no response from the paper feed. Error indication on panel No power to motor. Have tracked down to STA475A . IC is Listed as SanKen. Can someone give me a pinout for this or a supplier for replacement. |
| Sanken's STA475A is a quad Darlington array, rated for 100 Vceo, 2 Amp Ic (4 A. pulse), min. gain 2000, with protection diodes on the collectors. Pinout is: Emitters in common at pins 1 & 10, Base inputs at pins 2,4,6,8; Collectors at pins 3,5,7,9. The more commonly-available STA471A is similar, but only rated for 60 Vceo. Allegro MicroSystems represents Sanken in North America; check out their website at http://www.allegromicro.com/ for the distributor most convenient for you. |
| QUESTION NO. P225-9: I need description or at least pinout of NEC microprocessor D1708A. |
| The pinout of NEC's UPD1708A microprocessor was requested, so I will give that one. But note that NEC's UPD1708A is an IC series, with several application-specific devices as well. All are 52-pin IC's, but with differing pins/functions. The microprocessor is UPD1708AG-XXX, while the others have numbers like UPD1708AG-011, -020, -021, -022, -023, etc. The micro's pinout is: pins#1-4= LCD #4 to #1; Com2, Com1, VDD, VCOH, VCOL, GND, EO1, EO2, Chip Enable, NC, XI, XO, PA3, PA2, PA1, PA0, K3, K2, K2, K0, PB3, PB2, PB1, PB0, PC3, PC2, PC1, PC0, VDD; pins#34-52= LCD#23 to LCD#5. |
| QUESTION NO. P34-3: NEC JC-1536VMB monitor with a shorted HOT Q541 (2SC4924). I replaced it by a BUH715. After a few seconds of running, the power supply switched off again. Another transistor (Q572, 2SJ306) was shorted now. The HOT is still O.K. |
| 2SJ306 is a P-channel MOSFET, 250 V., 3 Amp, 25 W., Rds[on] < 2 ohm, in an insulated TO-220 case. Similar FETs are NEC's 2SJ448 or IRF's IRFI9634G. It is probably easiest just to get 2SJ306 itself; MCM (800-345-4330) lists it in stock. |
| QUESTION NO. P32-2: I can not find a cross reference for these HOT C5047 and C5296 . |
| 2SC5047 and 2SC5296 are Sanyo HOT's. 2SC5047 is rated for 1600 Vcbo, 25 Amp Ic, 250 W, TO3PBL case. MCM (800-543-4330) lists 2SC5047 in stock, and that's better than a cross. 2SC5296 is rated 1500 Vcbo, 8 A Ic, 60W, 3PML case. If a sub is needed, MCM lists 2SC4923, which has similar ratings, but a wider hFE spread at 1 Amp. If the replacement appears a bit underdriven, due to its being at the lower end of the hFE range, you may need to fiddle with the base-drive resistor value to use it. |
| QUESTION NO. P216-7: Samtron SC428VS+ (E) and I can not find a cross for Q803. The markings look like KSEB00 and are from Samsung semiconductor but I can not find any information or cross reference. Does anyone know what this crosses to? |
| Samsung's KSE800 [not KSEB00] is an NPN Darlington, rated for 4 Amps, 60 Vceo, 40 W, min. gain 750 @ 1.5 A., in a TO-126 package. It's a copy of MJE800. For a cross, Mouser (800-346-6873) has 2N6039 available for under $1 (stock# 511-2N6039); or you could get NTE/ECG253 or SK3996; both about $2 from Mouser (526-NTE253; 599-SK3996). You can also get MJE800 from MCM (800-543-4330); stock#M-MJE800. |
| QUESTION NO. P24-5: I need a replacement transistors for 2sk135 and 2sj50. These are used in a 500W amplifier and are no longer available. |
| 2SJ50 and 2SK135 are complementary P-ch. and N-ch. MOSFETs, 160 V., 7 Amp, 100 W., so your best bet is to use exact replacements. See if Techsonic (email: techsonic@rocketmail.com) still has these, they had both listed. Union Electronics (800-648-6657) and MCM (800-543-4330) both still list 2SJ50. If 2SK135 cannot be had, you might try the 200V-rated 2SK176 (also Techsonic). Another possibility for 2SK135 is Harris's 2N6757. Mouser (800-346-6873) lists that as catalog# 570-2N6757. |
| QUESTION NO. P22-6: We are in need of following components 1] LTC 1045CN 5 No. [ Is there any equivalent components for above.] We are also in regular need of FANUC hybrid Components to repair their CNC Etc. |
| LTC1045CN is the number for a Linear Technology universal level translator. Digikey 800-344-4539 distributes Linear's IC's, their catalog number is LTC1045CN-ND. |
| QUESTION NO. P113-10: Need to find a chip for a RCA TV CTC158 U1900 is the location number, The chip is marked as a NEC 895-1 audio output I have not found a sub. |
| IC U1900 part number RCA 181836 = ECG 7102. |
| QUESTION NO. P15-7: Yamaha owners manual for a CR820 Stero Receiver lists several parts needed for repair of preamp/amp section so far I have not been able to get a cross or distributor. Diode listed as 1S15555. Transitor 2SA814. Capacitor C733 39P. |
| From your description of the diode, it is probably a 1S1555-5. This crosses to an NTE506. As for the transistor, 2SA814 is an NTE292. As for the capacitor, are you sure that it isn't a small letter "P"? Any electronics supply store should have or be able to get NTE parts. |
| QUESTION NO. P123-8: Princeton monitor model # ultra 40 manufact in 1997. I found FET regulator transistor bad but I cannot cross it to anything. I cannot find an exact replacement. The # on the part is k2333, also looked for 2sk2333. |
| 2SK2333 is a high-performance FET from Shindengen. It is rated 700 V., 6 Amps, 2 ohms Rds[on]max, 50 W., and is in an insulated TO-220 case. This combination of specs is hard to match for a cross. Of US FET's, IRFBC40 comes close: it is only rated for 600 V., and you would need to use heat sink grease and an insulated mounting, since it is not self-insulated, but it meets the other specs. Newark Electronics (800-463-9275) lists IRFBC40 in inventory. Their TO-220 insulated mounting kit is stock # 46F4081. If a TO-247 device could be squeezed into the board location and lead holes, you could also try subbing an STW7NA80, available from Mouser (800-346-6873), or an NTE/ECG 2377, both of which meet or surpass 2SK2333's electrical specs. |
| QUESTION NO. P122-4: I need a replacement part for a Toshiba 26" TV. The part # is:CXA1124AS. It is a 42 pin SDIP (plastic) IC designed for the MTS decoding systems. This device contains a stereo signal demodulator, a SAP (second audio program) signal demodular and a dbx-TV noise reduction decoder. |
| MCM (800-543-4330) lists CXA1124AS in their inventory. |
| QUESTION NO. P119-3: I need a cross reference to a switching transistor in a Gateway Monitor Model Crystalscan1572 FS. The # on the Part is HV82. It has a TO3P style case. Part position # is Q301. |
| SGS-Thomson suggests their STW7NA80 MOSFET as a substitute for STHV82. Mouser (800-346-6873) carries this as part# 511-STW7NA80. Or you might sub an ECG/NTE 2377. Also, if Q301 has blown in that unit, better check/replace the 3842 IC as well. |
| QUESTION NO. P114-2: Lost brightness control on 14 inch SGVA EMC monitor. It is stuck on full bright. Found a shorted diode in the area of the flyback xfmr. The diode says N34SF16. Can anyone cross this? What are the specs? Where can I get a replacement? |
| Sounds like a Rectron SF16 superfast rectifier, which is rated 400 V., 1 Amp, trr < 35 nsec. Mouser Electronics (800-346-6873) list this as their item # 583-SF16 |
| QUESTION NO. P116-4: I am needing an acceptable substitution for a BA3922 stereo amp IC. |
| See if BA3922 is still stocked by Union Electronic Distributors, TEL: 800-648-6657, FAX: 800-438-6466 email: uedweb@unionel.com. |
| QUESTION NO. P18-7: Trying to repair a CTX 1562GM color monitor. Can't find data sheets, mfgrs, or pinouts on the following IC's taken from CTX schematic: AN6780, 7851, 4557, AN5766, 52327, LA7838, AN5262. (from ctx service manual). Can anyone help? |
| Cannot help fully, but here's some info: First, 'AN' prefixed IC's are Matsushita (Panasonic) parts, and 'LA' prefixed IC's are Sanyo parts--you can find datasheets online for the Sanyo IC's, if they're still in production. AN6780 is a long hour CR timer, AN5262 is a TV volume modulator circuit, and AN5766 is a pincushion distortion correction circuit. AN5262 crosses to (same pinout as) NTE/ECG 1783. LA7838 is a TV vertical deflection IC, and crosses to (same pinout as) NTE/ECG 7039. "7851" MAY be a LA7851 sync deflection circuit, if it is a 20-pin DIP, crossing to (same pinout as) NTE/ECG 7062. "4557" is unclear: if it is a 28-pin DIP, it may be Philips TDA4557 multistandard PAL/SECAM/NTSC color decoder IC (datasheet available online); if it has fewer pins, that could indicate a 4500-series logic chip, like HEF4557B. No info for "52327". |
| QUESTION NO. P113-2: NEC 3FGX monitor - need to know what q 516 is the componet has "HPA 72 on it. Need cross-reference. |
| HPA72R is a Sanyo HOT: 1500 Vcbo, 800 Vceo, 7 Amp,
60 W, TO3PBL case, with an integral damper diode with trr < 1 usec. It's safer to use
exact replacements than crosses for HOT's--see if LJ
Enterprises (800-627-8755) or CCS (800-356-1227) is stocking this one. |
| QUESTION NO. P112-10: We need a replacement for a six pin IC chip in a Bogan amp Model #MBA 30, part number GE H11F3. I believe the function is to control a Volume control with D.C. Voltage. |
| H11F3 is an unusual type of optoisolator, with an analog output using a FET that acts as a variableresistor, rather than the usual on/off type output. Mouser Electronics (800-346-6873) lists this IC as their part number 512-H11F3. |
| QUESTION NO. P1126-3: I am looking for a cross for operational amp. NE540L. |
| Try Component Sales, Inc.,(707)525-8813; FAX (707)525-8956; Email tarling@sonic.net |
| QUESTION NO. P1210-3: Looking for a parts address/phone number for HH Scott Tv parts. |
| H.H.Scott, 5601 Westside Ave., North Bergen, N.J. 07047, 210-662-2000. Parts & Tech literature H.H.Scott, Inc.State Route # 41 & County Road 100W Princton, In. 47670, 800-695-0095, Fax 812-386-6502. Tech Serv: 800-922-0738 |
| QUESTION NO. P128-7: Does anyone know a sub for byv36eph? |
| BYV36E is a Philips fast (150 nsec) soft-recovery rectifier, rated for up to 1000 Volts and 1.5 Amps continuous current. If you cannot obtain it from your Philips distributor, you might try subbing with an NTE571. |
| QUESTION NO. P1111-6: We have in our shop for repair a GE model 8-2568, with no audio. We are having a hard time finding a part number for the audio transformer. Can anyone with access to older GE service documentation help us with the part number? |
| You may try Sams Fotofact. |
| QUESTION NO. P1128-3: Where can I find original 2SC5250 transistors? This one is from a Packard Bell 1010 Monitor. |
| 2SC5250 can be purchased from B&D Enterprises, 800-458-6053. |
| QUESTION NO. P121-5: I need an IC TDA8351 for a Samtron SC428vs. |
| Try MCM Electronics, Parts Express, or L.J. Enterprises--all three claim to stock this IC. |
| QUESTION NO. P1114-5: I have a problem with a power supply. It seems like a DC-DC converter but I have not the diagram, the IC is uc3843. |
| UC3843 is a special, low-voltage version of the common 3842 current-mode controller. Pinout is and specs are the same as for 3842's, but minimal startup and operating voltages are typically 8.4 V and 7.6V, respectively, instead of 16V and 10V. For further information, get the datasheets from Motorola at: http://mot2.indirect.com/books/dl128/pdf/uc3842arev1.pdf or from Cherry Semiconductor at: http://www.cherrysemiconductor.com/products/PDF/CS-2842A,3842A,2.pdf Since your machine uses a special grade IC, you should also check if there is an A or B suffix, denoting if the IC has regular (1 mA) or low (0.5 mA) startup CURRENT requirements. Like with the 3842's, substituting a 1 mA startup-type IC in a machine designed for the low-current IC can give balky or no startup. And manufacturers are not consistent in these suffixes: Unitrode, TI, and Philips use 'no' vs."A" for these suffixes instead of A vs. B --check your IC's manufacturer's logo ! |
| QUESTION NO. P1113-9: I need a source for a Phillips flyback with the part number of AT2090/09. It fits a Phillips CM9214 and is definitely shorted. The monitor is not worth having to purchase a schematic from Phillips just to get their part number to find out what the flyback will cost. The usual sources like CCS do not have it. |
| Try contacting Component Technology @ 1-888-flyback. They have it listed in their catalog as p/n FXM-2245. |
| QUESTION NO. P1026-5: Rack-mounted Toshiba 14" monitor model #D14CD34 Manufactured in 1988 and has no vertical deflection. I suspect the IC part # TA7634AP is the gone. I have checked local suppliers and this part is not available. Does anyone know what this IC does. The monitor has a solid line running horizontal across the screen. |
| I have seen this IC sketchily described as having "chroma/amp" functions, but it could well have further video functions. If you want to get this IC, try Union Electronic Distributors 800-648-6657, who list it in inventory. Other possibilities are Techsonic techsonic@rocketmail.com or Electronics Warehouse Corp. 718-375-2700. |
| QUESTION NO. P1026-1: Where can I get SGS Thompson IC's? I am specifically looking for the L293D motor driver. |
| Arrow-Schweber (http://www.arrowschweber.com) and Hamilton-Hallmark (http://www.hh.avnet.com/) carry SGS products, and have L293D available. If Newark's (800-463-9275) $25 minimum looks smaller, they carry Texas Instrument's version, L293DNE. Mouser Electronics is a good source for SGS products in general, but they do not currently list L293D. |
| QUESTION NO. P1027-1: In a Compaq SLT286 "laptop" there is a IC in the internal power supply that is marked:830 2951 ACM and two wave lines, it's a 8 -pin surface mount dip. Can someone tell me what it is? |
| That SMD IC is a National Semiconductor LP2951ACM adjustable voltage regulator. |
| QUESTION NO. P1024-14: The circuit board of cruise control in 1988 Fleetwood Southwind motorhome, mfg ARA (defunct) requires the following parts: 11/SIP mfg NSC; 78L08;N2222A;CA3228E and a few 2N4126. |
| Mouser Electronics (800-346-6873) has 2N4126, and both 2N2222A (metal can) and PN2222A (plastic TO-92) transistors, and 78L08 voltage regulators. Harris has discontinued CA3228E, but this IC is still being maintained by Rochester Electronics; its email contact is sales@rocelec.com . National Semiconductor makes several 11-SIP IC's, so that one cannot be identified by me without further information. |
| QUESTION NO. P1021-1: I need the value of a zener diode marked F18PH? It is zd102 in the power suply of a CTX 1451c monitor. |
| This zener could be either a DZF18 (Sanyo) or an HZF18 (Hitachi). Either of those two can be substituted by an 18 Volt, 1 Watt unit, such as 1N4746A. |
| QUESTION NO. P1024-6: Goldstar tv/vcr combo that won't turn on. I suspect an epoxy coated to-220 transistor with the makings d2092 on it but cannot seem to cross it. |
| 2SD2092, from Toshiba, is rated 100 Vceo, 3 Amp, 25 W., fT=140 MHz, tF=0.7µsec. It is very high gain (ß=500-1500) but is NOT a Darlington, which is what makes it hard to cross. Other high-gain nonDarlingtons are lower in Vceo and a bit slower. For example, 2SC3852A and 2SD1273A (listed by MCM) have similarly high gains, but are only rated 80 Vceo, and 15/30 MHz. |
| QUESTION NO. P1017-7: I am looking for an ECG cross reference for kia6278p and rca 155338. |
| KIA6278P does not have an ECG substitute. The datasheet from KEA shows that the pinout of this IC is different from all the DIP-8 audio amps that ECG lists. You might see if Electronics Warehouse Corp. (Brooklyn, NY, 718-375-2700) still has KIA6278 in stock. |
| QUESTION NO. P1016-9: I need specs and/or cross for SCR labled HS44. |
| To substitute for HS44, you'll need a sensitive-gate (0.2 mA Igt) SCR rated for 4 Amps and 400 or higher Volts. You can get such an SCR in a TO-202 case from Mouser Electronics (800-346-6873), their parts 519-T106D1 [rated 400 V], or 519-T106M1 [rated 600 V]; or in a TO-126 case from Tech America (800-877-0072), their part# 900-3124 [rated 400 V]. Similar SCR's can be obtained from a number of places; these two suppliers are given because they don't have minimum order requirements. |
| QUESTION NO. P1017-6: I need a source for transistor numbers BFQ252A and BFQ262A. |
| Try LJ Enterprises (800-627-8755) for these Philips transistors. Arrow-Schweber and Marshall Electronics also list BFQ262A as currently in inventory. |
| QUESTION NO. P1016-14: I need a transistor #K796. It crosses over to ECG#2378 but my supplier says ECG keeps back-ordering it. |
| This FET is 2SK796. Contact Techsonic at email techsonic@rocketmail.com , or Pacific Semiconductors at info@pacificsemi.com and see if they currently stock this part. |
| QUESTION NO. P106-11: I need a cross reference on 2 transistors, a P43 and a 4210. I believe that the 4210 transistor has a built in resistor. |
| "4210" may be Matsushita's UN4210, with an integral 47K ohm resistor leading into the base of the transistor. This NPN transistor is rated at 50V, 0.1A, 0.3W, ß=160-460. Sanyo's 2SC3899, Mitsubishi's RT1N440S or Rohm's DTC144T types are similar. If none of these can be located, you might point-to-point wire a small 47K resistor to the lead for the base of a regular transistor with similar specs, such as 2SC3311 or 2SC3390; both are carried by MCM, among others. I cannot place "P43"--is there an additional character beyond? If so, it MAY be an RT1P43xx type (Mitsubishi); these use an integral 4.7K resistor ("43"=4.7K), but you would need to know those missing characters (xx's) to determine the proper transistor. |
| QUESTION NO. P1013-10: I need to get a cross reference for damper diode # STUZ52 and mosfet # 2SJ307 (used in a Sony monitor model # 15SF1) or their electrical characteristics. |
| "STUZ52" is probably Toshiba's 5TUZ52, with maximum ratings of 1500 V., 5 A., 0.6 µsec Trr, 1.8 Vf @ 5A. 5VUZ52 has the same specs, except being rated for 1700 Volts. 5TUZ52 uses a TO-3P(H)IS package, which makes it hard to cross: only Sanken's FMP-G3FS matches in specs AND package. The electrical specs are met by some rectifiers in other packages, though. 2SJ307 is a P-channel MOSFET, in a TO-220 package, rated -250 V., 6 A., 30 W., Rds[on]<1 ohm, made by Sanyo. MCM Electronics (800-543-4330) lists 2SJ307 in its inventory. |
| QUESTION NO. P1013-9: Q701 on a CTX model 1562GM color monitor (shorted) is labeled C4924 and 3d4. Cannot find in my references. Does anyone have a source or a substitute? |
| This is probably 2SC4924, a 1500 V., 10 A., 70 W. HOT from Sanyo in a TO-3PML package. MCM (800-543-4330) lists this device in their inventory. |
| QUESTION NO. P106-1: In P-922-2 I asked for a cross or source for q303 in a Gateway monitor the transistor is marked D799 but the one I need is in a to-220 case thus Ecg 165 won't work. Does anyone know what this is? |
| ANSWER 1: 2SD799, an NPN Darlington, has max. specs of 400 Vceo, 6 A., 30 W.; min. gain of 600 at 2 A. Pinout on the TO-220 is BCE. MCM Electronics lists it in their inventory (800-543-4330). |
| ANSWER 2: I have used ecg 2315 in its place and it works fine. |
| ANSWER 3: ECG165 transistor..a "165" is an old to-3 style metal HOT tronsistor, and is NOT a cross. The part, 2sd799, is a to-220 plastic case, no cross to nte or ecg. It is available from B&D electronics. |
| QUESTION NO. P106-7: I need to get pinouts or data sheets for LA7850 and LM1205. |
| You can download these datasheets as PDF files. Access the LA7850 datafile from this URL:http://www.elisnet.or.jp/login-sanyo.htm Access the LM1205 datafile from this URL: http://www.national.com/ds/LM/LM1205.pdf If you do not already have a program that accesses PDF files, Adobe provides Acrobat Reader free at: http://www.adobe.com/prodindex/acrobat/readstep.html |
| QUESTION NO. P926-1: I need to get the pinouts of tda 8455 and tda8458 used in IBM monitors. |
| I have found the nearest possible IC's: TDA4855 & TDA4858. You can also look them up at http://www.semiconductors.philips.com. From here you can download the Data Sheets (PDF format). |
| QUESTION NO. P910-11: I need the pinout for a tda8433. ECG does not carry a replacement for that i.c. |
| TDA8433 is a I²C bus IC from Philips, it contains
vertical control and 3 DAC's. 1: A0
address |
| QUESTION NO. P922-2: Gateway cs1024ni2 need to replace Q303 it is marked D799 but can't cross. |
| Q303 is a 2SD799 and it cross references to ECG 165 |
| QUESTION NO. P913-6: I need an ID on an 8 pin IC labelled 2068DD, made by JRC. I believe it is an op-amp of some sort, so a cross would be fine. |
| NJM2068D is a dual, low noise op amp meant for audio applications, and uses the industry-standard pinout for dual op amps. Its specs resemble those of National's LM833N, except that it works down to +/- 4 V: for power rails above +/- 5 V, LM833 would be a good sub. But Mouser Electronics (800-346-6873) has NJM2068D itself, ~$1. If B1370 is Rohm's 2SB1370 (in an insulated TO-220 case), it is a PNP general purpose amp, rated 60V, 3 A, 30W, BCE pinout. MCM Electronics (800-543-4330) lists 2SB1370 in its inventory. |
| QUESTION NO. P913-6: I need a "transistor" labelled B1370, or possibly BI370. I'm not sure what this does, it lies in the middle of a lot of SMT components. |
| Transistor could be ECG 378 PnP PO SW |
QUESTION No. P821-1: I need a cross / supplier for a Telefunken BUV30 transistor, I have tried a BU522B but hfe is too low. This is from a switched mode power supply, so Vce and hfe is important. Also a data sheet/spec on 2SC3026 from a EGA monitor ATE-MATE. |
| Here are some specs on 2SC3026: TO-3 case, BEC pinout, 1700 Vcbo, 800 Vceo, 5 A, 50 W, Vce[sat] < 2 V and Vbe[sat] < 1.5 V @ 5 A Ic and 1.25 A Ib; 0.5 usec tF, 4 usec tSTG. I don't know where to get BUV30, but if BU522B is a Darlington with too low hFE for that SMPS, there are similar Japanese Darlingtons with better minimal hFE specs, so you might try one of those (for BU522B, hFE >250 at 2.4A). |
| QUESTION NO. P910-2: I need a stk73907 that belongs to an AIWA product a combination of tv/vcr in one unit. The model# is vxt1000mk111ke. |
| For STK73907, try either MCM Electronics [800-543-4330]. For Parts Express [800-338-0531]. |
| QUESTION NO. P96-4: I need an equivalent for MPF 6661 used in Dell 1728 monitor. |
| Both Newark Electronics and MCM Electronics list Motorola's MPF6661 MOSFET itself. Although the gate (pin 2) is rated to 90 V., you can easily puncture it with static discharge or an ungrounded soldering iron, so use ESD-safe handling. Also, both these retailers can ship in ESD-safe packaging, so despite their minimums, I wouldn't cheap out. |
QUESTION No. P87-9: Packard Bell 14.4 Sound Cards FCC ID: I38-MMSN834. They are manufactured by Aztech Labs in Singapore. These boards have 3 surface mount Diodes that I am having a hard time identifying. They are as follows: RBA (22 or 10 written sideways) SOT 23 Loc: D11 F4L4 (Alt. I3I) SOT 23 LOC: D2 D942 (Alt. -D94) SOT 23 LOC: D3. |
| I cannot help you with all three diodes, but I have seen RBA used as a code for BAV99 diodes [80 V., 100 mA, 1.2Vf max @ 100 mA, 3.5 pF, 4 nsec trr], and D94 used for SGS-Thomson's BAR42 Schottky diodes [30V, 100mA, 0.4Vf @ 10 mA, 7 pF]. There seems to be no standard for SMD marking codes, and I have even seen different manufacturers use the same code for different devices, so these ID's cannot be guaranteed for the devices you have. I also know of no complete reference to SMD marking codes readily available on the net, but a partial listing for SOT-23 transistors/diodes can be found at: http://www.paranoia.com/~filipg/HTML/REPAIR/F_SMD_trans.html. |
| QUESTION NO. P94-3: I need a Data Sheet / pinout information for a LA4700 chip. I have contacted TechSonic and they do have the chip, made by Sanyo, but I have not been able to locate pinout information to verify if it is indeed the problem or not. It is in a Yamaha PSR-500 keyboard. |
| LA4700 is an 18-pin SIP, dual 12 watt audio power amp, with these pin ID's: pins 1 & 18: Noninverting Outputs; pins 2 & 17: L-ch. & R-ch. GND; pins 3 & 16: Inverting Outputs; pins 4 and 15: L-ch. & R-ch. Vcc; pin 5: power switch; pins 6 & 13: Inverting noise filters; pins 7 & 12: Noninverting noise filters; pins 8 & 11: L-ch. & R-ch. inputs; pin 9: power relay; pin 10: preamp GND; 14) DC/ripple filter/mute. For the actual datasheet, download it as a PDF file via this link: http://www.elisnet.or.jp/login-sanyo.htm. |
| QUESTION NO. P94-7: I need the JCV p/n and or a replacement p/n for the video heads in a JVC model HR-D1860UM VCR. This is a HiFi 4 head DA machine. |
| For generic substitution, contact GES Electronics 800-300-8772, P/N 2105. For original part, contact Andrews Electronics 800-289-0300. |
| QUESTION NO. P94-4: I need an Emerson TV Part from normal Parts Vendor. Looking for Part TA8801AN (IC - Vertical/Horizontal Sweep.). |
| Try MCM Electronics [800-543-4330] or Electronics Warehouse [718-375-2700]. |
QUESTION No. P821-4: I need a Chroma Demod I/C from Sanyo. P/N LA1369, 1979 vintage T/V. According to ECG,NTE it is obsoleted. |
| See if Techsonic still carries LA1369. Telephone: (415) 412-5245 e-mail: techsonic@rocketmail.com |
| QUESTION NO. P828-8: I need the datasheet for this Sharp optoisolator S21ME4. This optoisolator is used in many brands of laserjet printer. |
| S21ME4 is a phototriac isolator, with its triac rated for 600 V standoff and 0.1 Amp; turn-on at 7 mA to the LED; 5000 V isolation, zero-crossing circuitry included. The LED anode and cathode are pins 1 and 2, the triac's outputs are pins 4 and 6. You can download the datasheet as a .PDF file from: http://www.sharp.co.jp/ecg/pdf/thyristor/s21me.pdf. |
| QUESTION NO. P828-2: Could anyone help me find a 2SC5207A Output transistor or a replacement for same? |
| 2SC5207A is a Hitachi product, so you could contact a Hitachi supplier for an original replacement. If none are forthcoming, for purposes of substitution, 2SC5207A is rated 800 Vceo, 10 Amp, 5 Vceo[sat], 0.4 µsec tF max, no internal damper diode. This would be similar to Sanyo's 2SC4924 or 2SC5044, both listed by MCM, or Matsushita's 2SD2355. 2SC5207A has a higher amp rating than 2SC5207 itself, so do not substitute 2SC5207 or any of its equivalents for 2SC5207A. |
| QUESTION NO. P827-2: Who makes the original STK power amplifiers? |
| SANYO Semiconductor is the original manufacturer of STKxxxx hybrid IC modules. Worldwide contact information and access to datasheets on their products CURRENTLY supported can be accessed [in English] at website: http://www.semic.sanyo.co.jp/english/catalog/index-e.html. |
QUESTION No. P821-3: I need a parts supplier for Orion tv/vcr parts. |
| Orion, 11 Union Drive, P.O. Box 10, Olney, IL 62450, (618)392-7000. |
QUESTION No. P821-7: I need an ID on a part labelled AC03, made by NEC. It appears to be either a triac or an SCR. |
| AC03 describes a 3 Amp Triac. Your part number is incomplete, so the voltage cannot be determined by me. NEC uses suffixes after that 'AC03' to describe voltage rating, and package [and thus power rating]. For example, suffixes D=400V, E=500V, F=600V ratings. Manufacturers often omit part number data from the code stamped on the device when it is obvious from inspection, such as package, so to provide you with a cross, you have to describe the package as well as give the fragmentary part number on the device. |
QUESTION No. P819-6: Supertron/Supercom monitor SV1482 that blows fuses. It appears that power transistor (on PS board), labled C3459 is bad. Any cross-reference or source for this item? |
| MCM Electronics lists 2SC3459 in its inventory. It's a fast-switching NPN transistor, with ratings of 1100 Vcbo, 800 Vceo, 4.5 A, 90 W, 2 Vce[sat] at 4A. |
QUESTION No. P819-2: Tystar Model TY-3448 FCC#H81TY-3448. We have a monitor in the shop that has a Horizontal Sync problem. The chip located at U400 appears to be bad but we could not cross it to anything. The chip has on it Weltrend 8041 2283. Any help for a substitute would be appreciated. |
| For Weltrend IC's, contact LJ Enterprises, 800-627-8755 |
| QUESTION No. P819-6: Supertron/Supercom monitor SV1482 that blows fuses. It appears that power transistor (on PS board), labled C3459 is bad. Any cross-reference or source for this item? |
| MCM Electronics lists 2SC3459 in its inventory. It is a fast-switching NPN transistor, with ratings of 1100 Vcbo, 800 Vceo, 4.5 A, 90 W, 2 Vce[sat] at 4A |
| QUESTION No. P819-2: Tystar Model TY-3448 FCC#H81TY-3448. We have a monitor in the shop that has a Horizontal Sync problem. The chip located at U400 appears to be bad but we could not cross it to anything. The chip has on it Weltrend 8041 2283. |
| For Weltrend IC's, contact LJ Enterprises, 800-627-8755. |
| QUESTION No. P818-3: I need an ECG replacement for ta8232h. |
| Do NOT get the ECG substitute for "TA8232" [ECG 196]: that is a transistor, whereas TA8232H is a Toshiba dual audio power amp IC. MCM Electronics lists both TA8232 and TA8233H, a similar power amp, in its inventory. If ordering, be clear about wanting a power amp IC! |
QUESTION No. P717-2: Where can I get 74HC266 chip for IBM 9518, Front cover for IBM 6543-301, Front cover for Compaq 473A? |
Alltronics Corp.[San Jose,CA] lists 74HC266 IC's. Tel: 408-943-9773 Fax: 408-943-9776 email: ejohnson@alltronics.com |
QUESTION No. P89-2: Hyundai Deluxscan 17" Monitor (HL-7864). I need a need a cross/substitution for both Q105 and U103. Q105 is a TO-3PJ case labeled K1358 and U103 is an 8-pin DIP (unreadable) Both components are from the switching power supply assy. |
K1358 is 2SK1358 and is MOS-N-FET-e 900V 9A 150W. As you see from the front from left to right pins are Gate, Drain, Source. The 8pin-DIP most propably is a 3842 or 3844 PWM controller. |
QUESTION No. P89-1: I need a cross for a philips HOT BU2525AX. |
There is no way of guaranteeing you a successful cross for a HOT, without knowing the circuit, if it's not the original transistor from Philips. HOT circuits are sometimes balanced to take advantage of a transistor's intrinsic capacitances and inductances. Another transistor, though similar on paper, might conceivably absorb excess energy and self-destruct, or imbalance the circuit and cause foldover, and whether that's so depends on the circuit design itself. Having been warned, if you can't get the Philips original, BU2525AX has specs similar to Sanyo's 2SC4890 and 2SC4891, listed by MCM. 2SC4891 is closer in saturation voltage to BU2525 and has a 15 A. rating [vs. 12 A. for BU2525]; its DC gain range overlaps BU2525, but could range slightly higher. 2SC4890 has a bit lower DC gain range, with a 12 A. rating. |
QUESTION No. P722-3: I need a data-sheet for the "D1027" transistor. |
I do not have the actual datasheet for 2SD1027, but here are some specs: it is an NPN Darlington, BCE pinout, min.gain 1500; 200 BVceo; 15A max; 100W.max; TO3P case; 1.5Vce[sat]max, 2Vbe[sat]max; fT 20MHz; switching times are 2 µsec[T on], 5 µsec[T fall], 8 µsec[T stg]. Contact Shindengen Corp.[Japan] for the actual datasheet. |
QUESTION No. P87-8: I need to know how to replace an optoisolator cnx82a(6 pin)and kpc814(4pin). |
CNX82A is a phototransistor output photoisolator, min.CTR 40%, 5300 Visol., pinout 1) LED anode, 2) LED cathode, 3) n/c, 4) emitter, 5) collector, 6) base. PC814 has bidirectional LEDs for AC inputs (pins 1 and 2), 20% min.CTR phototransistor output, pin 3 = emitter, pin 4 = collector, with 5000 Visol. Similar photocouplers listed by Digikey are CNY17-1ZQT or H11A1QT for CNX82A; and H11AA814QT, H11AA814AQT, or PS2505-1NEC for PC814. |
QUESTION No. P83-1: DTK SM-5514B with a bad Q806 marked K323. I need a sub for this unit. |
This transistor is connected to pin 12 on U801 and can be replaced with a BD139 or and ECG373. |
QUESTION No. P730-5: IBM 3197 terminals and came across several glass pack diodes with only color codes. Specifically I need D107 crossed. |
The color on the leg of the cathode is the watt reference. The 2 colors on the body of the diode is the voltage. D107 is a 15V 1watt zener diode. |
QUESTION No. P726-1: I need the pinout for an STA341M motor drive, used in an RCA-8055A 5 disc cd player. |
Sanken calls STA341M a transistor array, not a motor driver. It consists of 3 NPN/PNP push/pull transistor pairs, each rated for 30 BVceo, 1 Amp, 100 min.gain. The bases of each pair are connected to form each input, and the emitters are tied together to form each output. Pinout is 1)V+, 2) In1, 3) In2, 4) In3, 5) V-, 6) Out3, 7) Out 2, 8) Out1. |
QUESTION No. P81-9: Where can I purchase regulator IC STR5100? No luck with ECG,MCM, Fusion,Dalbani etc. |
Have you tried Parts Express [800-338-0531]? You might also inquire about NTE 1886 there if the exact replacement is now sold out. |
QUESTION No. 729-2: I need several National four terminal variable regulators to repair some power supplies. The part number is 78MGCP, last made in 1994. Is there a substitute or a circuit I can build to replace it? |
If Parts Express [800-338-0531] still has UA78MG, that Is probably easiest. You could also use ECG or NTE 953, but for several of those devices it could be rather pricey. |
QUESTION No. P722-2: Where can I find an 88MS05 voltage regulator used in an AIWA walkman type CD player? |
'88ms05' is Sanyo's L88MS05T device: 5V, 0.5A, 0.4V dropout. Sanyo no longer lists it in active production, however, and I do not know an exact substitute (though a few devices could be finagled as a substitute with rewiring, etc), so you should probably contact your nearest Sanyo Semiconductor, Inc. office, and inquire about local suppliers. Before junking the old device, though, be aware that one of the pins can strobe the device to an OFF state if held high. That's going to be one of the 2 pins you have not identified, probably the one nearest Vout [I do not have the pinout], the other pin being no connection. So a working device in that OFF state would appear inactive, if there is an inappropriate Strobe input. |
QUESTION No. P728-4: I need the pinouts to audio output ic number TDA7263. This ic is in an RCA tv - model number F19220BK. |
TDA7263
typically runs at 28V [usable at 10-32V], delivering 12W into an 8 ohm load. It's pinout
is: 1) Noninverting input1, 2) Inverting input1, 3) Muting, 4) Inverting input2, 5)
Noninverting input2, 6) GND, 7) n/c, 8) Output2, 9) +Vs, 10) Output1, 11) n/c. At +28 Vs,
quiescent power usage is <95mA (70mA typ), and quiescent output is at about 13.5 V. Muting guaranteed if mute pin <1 V., while 'play' threshold is typ. 4.5 V. |
QUESTION No. P724-7: I need any information on Stereo Power Amplifier SVI 3205. It has 18 pins. |
The only info I have is that this is a Panasonic custom hybrid IC amplifier. You may be able to get data on it from Panasonic's service people--check their website http://www.pasc.panasonic.com/ for further details. You can at the least order a new SVI3205B at that site, about $53 [MCM prices it about the same]. |
QUESTION No. P627-2: I need a SCR, Part number BTW28A800R. |
You may have difficulty finding this dinosaur. You did not ask for a substitute, but if you're interested, you are looking for a 800V, 16 A(avg), stud-mount SCR, something like a 2N692 or 16RIA80. But check your circuit first: the 'R' suffix may indicate a reversed polarity device. Also, if the stud needs to be metric-threaded to screw in, you need an 'M' suffix as in 16RIA80M. Newark, or other distributors of International Rectifier SCR's, are possible suppliers. |
QUESTION No. P721-3: I need information on the chip TC19G032AT made by TOSHIBA and on the following chips made by California Micro Devices (www.calmicro.com): G65SC22, G65SC51, G65SC816. |
G65SC816 is a Calmicro microprocessor, in either 40-DIP or 44-PLCC package. DIP pinout is (pins 1-40): VP, Ready, Abort, IRQ, ML, NMI, VPA, Vdd, A0 thru A11, Vss, A12 thru A15, D7/BA7 thru D0/BA0, Read/Write, EmulatorSlt, BusEnable, Phase2In, ModeSelect, VDA, Reset. PLCC has same pin order, but pins# 1, 12, 23, 37 are no connection and insert into the above ordering to give the 44 pin total. G65SC22 and 51 are interface adapters, and info on these is accessible on the Calmicro webpage at http://www.calmicro.com/prod/data/data.htm#semiconductor. The Toshiba IC is discontinued, and its number looks like a programmable IC anyway, so can't help you there. |
QUESTION No. P710-3: I need a replacement for the HS-10 "Bilateral silicon trigger switch" recently discontinued by Teccor. This device was available in a DO-35 package, and this package is desirable. |
I do not know a current producer of SBS's in DO-35 cases. One alternative is to clip the central gate lead from a TO-92 type SBS, which would make it equivalent to using a DO-35. Of TO-92 types, the MBS4992 is closest in specs to HS-10, except that it has breakover at 8V. instead of 10V. MBS4992 is currently available, for example from Tech America [800-877-0072]. FROM WEBMASTER: The person who answered this question says that he has a few of these parts but he cannot be a regular supply. If interested email me. |
QUESTION No. P724-2: I need a source for a SC3178 power transistor (in the power supply) for a 19" Mitsubishi monitor model C-6920AG. |
Check with MCM @ 800-543-4330. The catalog lists the HA13150A, 2SC3178, and 2SC3377. |
QUESTION No. P724-3: I need a source for a 2SC3377 or an alternate. This part is from a Sony vcr power supply. |
MCM and Dalbani still list 2SC3377. They also list 2SC2060, essentially the same chip as 3377, but in an enlarged TO-92 and rated 0.75W, vs. 0.5W for 2SC3377. |
QUESTION No. P723-6: I need to replace a blown horizontal output transistor from a Protech 14" monitor. It is a 2SK1023. I need to know the ratings for this device. |
2SK1023 has
these specs: 800 V., 4 A., 60 W., Rds[on] <4.5 ohm. BUZ90 is only rated 600 V., but I do not know if your monitor gets that high. Two FETs with specs equal/superior to 2SK1023 are NTE 2387, and IRFBE30 [Digikey lists at under $3]. |
QUESTION No. P723-4: I need a cross reference for an ic for a capstan motor in an NEC vcr, model #N901BU. Number on the original is LB1615. |
Check with MCM @ 800-543-4330. |
QUESTION No. P721-6: I need a lm396k regulator ic for high frequency transceiver type signal one Ms 1030. |
Dalbani has had LM396K, but it's not cheap (~$40). If you are able to switch the wires around, you might substitute a LT1038CK, available from Digikey for $18. LT1038 has the same 10 Amp capacity, but different pinout. Looking at the back of the TO-3, with pins situated above the midline, pins 1 and 2 are the left and right pins. For LT1038, pin1 =Adj, pin2 =Vin, case=Vout, while for LM396, pin1 =Vout, pin2 =Adj, case=Vin. And, be sure the pins and case are insulated from the chassis. |
QUESTION No. P717-5: I need a cross refernce for a power transistor STG4021. |
Are you ceertain that is not STK-4021? If so the part is avail from MCM. |
QUESTION No. P718-3: I need a source for dual gate N-ch MOSFET transistor P/N 3AK83 or 3GK83 or 3SK83. It is likely Asian in origin. |
MCM Electronics or Dalbani may still stock 3SK83. If not, you might try ECG/NTE 455, although it has a bit different Vgs[off]max. |
QUESTION No. P710-5: Chip Capetronic DMC-1000 Monitor Viglen MC1528le. Where can I find a data sheet for this chip? |
Here is a partial answer. My monitor, a 17 inch Optiquest 4000TC which is a badged Capetronics Model CAM6702 also has a microprocessor Type DMC-1000-G with a logo CCT and the word "CAPETRONIC". It is mounted on a small daughter PCB approx 1.625 x 1.75 inches with a 4 Meg crystal and a couple of SMD IC's (I do not believe the uP was made by Capetronic). I have tried also to get information without much luck. I rang Capetronic Corp and was advised by the party who have taken over their telephone line that Capetronics have gone out of business. (15 July1997). A possible OEM could be "DYMEC" ...D M C.... a semiconducter manf at Winchester MA Phone 617-729-7870. I am domiciled in New Zealand and it is too expensive to make these inquires on tolls. Perhaps someone in MA can make the inquiry and update this question I suspect your monitor was made by Capetronic Corp. Check the FCCID, "GWGCAMxxxxxx" was Capetronic. If the uP ever fails where do we buy replacements? Can someone supply any futher information.? Who has purchased the Capetronics stock? |
QUESTION No. P717-13: KTX topscan Monitor CM-451S - PCB description says PTC101, the component is "SINCERA DGC3R14M 950302". What is the equivalent? Where can I get it? What is it? |
This is a positive-temperature coefficient resistor (posistor). |
