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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. |
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