HP Part numbers Crossreference



#11

I have been Trying to compile a list of HP part numbers against generic Part numbers I will post the list as a CSV under this one (if it fits) any additions/corrections or comments would be appreciated

Regards
Richard Freeman


#12

1810,0076,SIL Resistor 1k8*8,,

1810,0081,Resistor Pack,"""Multi-Value 27110 HPIB""",

1810,0122,Resistor Pack,3k3*13,

1810,0190,Resistor Pack,2k2*13,

1810,0206,Resistor Pack,10k SIP,

1810,0235,Resistor Pack,2k2 * 15,

1810,0307,AB316-101,100 Ohm resistor pack,

1810,0485,Resistor Pack,22k * 7 DIP,

1810,0592,RC Network,HPIL termination,

1810,0651,Network,HPIL components,

1810,0719,Resistor Pack,1k5 * 15,

1813,0285,20MHz osc,,

1813,0327,Delay Line,"""35ns 75ns HP150 RAM card""",

1813,0453,35.19MHz osc,,

1816,1104,no id number,1K ROM HP1350 Char. Gen.,

1816,1105,no id number,1K ROM HP1350 Char. Gen.,

1816,1118,no id number,256K ROM HP1350 Char. Gen.,

1816,1119,no id number,256K ROM HP1350 Char. Gen.,

1816,1120,82S126,Preprogrammed for HP1350 I/O,

1816,1697,63S241,PROM - HP150 Expanded RAM card,

1816,0353,74S188N,STTL,

1816,0354,74S387N,STTL,

1818,1003,C71016,9825B ROM - 00K LSB,

1818,1004,C51039,9825B ROM - 00K MSB,

1818,1267,C71019,9825B ROM - 10K LSB,

1818,1268,C51268,9825B ROM - 10K MSB,

1818,1269,C71021,9825B ROM - 20K LSB,

1818,1270,C51288,9825B ROM - 20K MSB,

1818,1271,C71023,9825B ROM - OPTA LSB,

1818,1272,C71024,9825B ROM - OPTA MSB,

1818,1273,C71025,9825B ROM - OPTB LSB,

1818,1274,C51292,9825B ROM - OPTB MSB,

1818,1275,CN45010,,

1818,1437,uPD446C-2,Memory,

1818,1611,6116,2K*8 RAM,

1818,1754,uPD5101,1K*4 CMOS SRAM,

1818,1774,2114,1K*4 RAM,

1818,1817,MK36844,ROM - HP9836,

1818,1818,MK36844,ROM - HP9836,

1818,3059,4164,DRAM,

1818,3079,2364,"""8k*8 ROM 3421 DAQ unit""",

1818,3080,2364,"""8k*8 ROM 3421 DAQ unit""",

1818,3198,6264,8K*8 RAM,

1818,3447,27128,EPROM,

1818,3526,AM9233CPC,IC,

1818,3529,23256,HP150-II ROM 1,

1818,3530,23256,HP150-II ROM 2,

1818,3531,23256,HP150-II ROM 3,

1818,3604,27128,EPROM,

1818,3648,23256,HP150-II ROM 0,

1818,3649,23256,HP150-II ROM 4,

1818,3932,62256,32K * 8 SRAM,

1818,4372,27128,EPROM,

1818,4373,27128,EPROM,

1818,4486,27C010-155,EPROM,

1818,0156,,4K DRAM,

1818,0373,MK34127N,,

1818,0643,6514?,1K*4 CMOS RAM,

1818,0701,6810,"""128 x 8 RAM",

1820,1032,74198,,

1820,1050,75454,,

1820,1053,7414,,

1820,1056,74132,,

1820,1057,DM86L76N,,

1820,1072,74S139,,

1820,1074,74128,,

1820,1076,74S174,,

1820,1077,74S157,,

1820,1112,74LS74N,,

1820,1114,mc14510bcp ,bcd up/down counter cmos,

1820,1120,uhp-402 sprag,"""ue """"general interface buffer"""" (HP special)""",

1820,1144,74LS02N,,

1820,1146,4050,,

1820,1150,4518,,

1820,1166,DM85L51N,,

1820,1193,74LS197,,

1820,1194,74LS193,,

1820,1195,74LS175N,,

1820,1196,74LS174,,

1820,1197,74LS00N,,

1820,1198,74LS03,,

1820,1199,74LS04N,,

1820,1200,74LS05,,

1820,1201,74LS08N,,

1820,1202,74LS10,,

1820,1203,74LS11,,

1820,1204,74LS20,,

1820,1205,74LS21,,

1820,1206,74LS27,,

1820,1207,74LS30N,,

1820,1208,SN74LS32N,LSTTL IC,

1820,1210,74LS51,,

1820,1211,SN74LS86AN,LSTTL IC,

1820,1212,74LS112,,

1820,1216,SN74LS138N,LSTTL IC,

1820,1217,74LS151,,

1820,1238,74LS253,,

1820,1240,74S138,,

1820,1244,74LS153,,

1820,1245,74LS155,,

1820,1255,DM8096N,* Interface IC similair to 74366,

1820,1257,74159,,

1820,1258,74178,,

1820,1260,74LS221,,

1820,1275,74S260,,

1820,1280,74LS181,,

1820,1281,74LS139,,

1820,1282,74LS109,,

1820,1283,74LS595BN,* LSTTL IC,

1820,1285,74LS54,,

1820,1288,8241 ? ,Quad 2 input Xor ?~?,

1820,1296,74LS295,,

1820,1297,74LS266,,

1820,1298,74LS251,,

1820,1300,74LS195,,

1820,1301,74S257,,

1820,1304,74S194,,

1820,1307,74S132,,

1820,1322,74S02,,

1820,1323,74S30,,

1820,1348,MM5307N,Baud Rate Gen,

1820,1358,93L34PC,Latch,

1820,1367,74S08N,,

1820,1402,74LS365,,

1820,1411,74LS75,,

1820,1412,4556,,

1820,1414,74LS12N,,

1820,1415,74LS13N,* LSTTL IC,

1820,1416,74LS14 ?,101P,

1820,1418,SN74LS42J,LSTTL IC,

1820,1419,74LS85,,

1820,1422,74LS122,,

1820,1423,74LS123,,

1820,1425,74LS132,,

1820,1427,74LS156N,,

1820,1428,74LS158,* LSTTL IC,

1820,1430,74LS161,,

1820,1433,74LS164,,

1820,1435,74LS669,,

1820,1437,74LS221,,

1820,1438,74LS257,,

1820,1439,74LS258,,

1820,1440,74LS279,,

1820,1441,74LS283,,

1820,1442,74LS290,* LSTTL IC,

1820,1443,74LS293,,

1820,1444,74LS298,,

1820,1445,74LS375N,,

1820,1447,74LS670,,

1820,1449,74S32N,,

1820,1451,74S38,* STTL IC,

1820,1453,74S163,,

1820,1469,74LS107,,

1820,1470,74LS157,,

1820,1478,74LS93N,,

1820,1486,4081,,

1820,1491,74LS367,,

1820,1492,74LS368,,

1820,1563,74C175,?,

1820,1568,74LS125,,

1820,1584,8046 ?,20 PIN,

1820,1633,74S240,,

1820,1641,74LS365,,

1820,1645,74LS126,,

1820,1655,74C906,Hex buffer,

1820,1673,SN97558N,,

1820,1676,74S373,,

1820,1689,MC3446,GPIB Buffer,

1820,1701,Intel 8080A,* Microprocessor,

1820,1729,74LS259,,

1820,1730,74LS273,,

1820,1745,4001,,

1820,1746,4049,,

1820,1747,mc14011bcp,2i/p nand cmos,

1820,1753,74C74,,

1820,1804,MPQ6842,Transistor Array,

1820,1810,MC3460,Clock Driver,

1820,1851,74LS148,,

1820,1897,mc14024bcp,7 stage cmos counter,

1820,1905,74S260,,

1820,1917,74LS240,,

1820,1918,74S241,,

1820,1932,4538,,

1820,1943,74S169,4028 ? Or 74S169,

1820,1960,4012,,

1820,1962,4028,CMOS Decoder,

1820,1963,mc14013bcp,dual d flip flop,

1820,1964,4027,,

1820,1970,4071,,

1820,1989,74LS393,,

1820,1991,74LS390N,,

1820,1997,74LS374,,

1820,2008,mc14015bcp,parallel out shift reg. dual 4 bit cmos,

1820,2012,SN74S373N,LSTTL IC,

1820,2013,4016,,

1820,2015,mc14070bcp,quad xor cmos,

1820,2024,74LS244,,

1820,2031,4014,,

1820,2037,mc14081bcp,2i/p and cmos,

1820,2044,74LS244,,

1820,2058,MC3448,GPIB Buffer,

1820,2075,74LS245,,

1820,2076,D3242,Dynamic Ram Address mux,

1820,2078,74LS490,,

1820,2096,74LS393,,

1820,2099,6802,Microprocessor ?,

1820,2102,74LS373,,

1820,2111,SN75468N,DRIVER IC,

1820,2117,9636,Line Driver,

1820,2177,8243,I/O expander,

1820,2198,9637,Line Receiver,

1820,2199,9638,Line Driver,

1820,2204,6402,UART,

1820,2206,74LS640,,

1820,2208,75462,,

1820,2210,74C00,,

1820,2211,74C04,,

1820,2215,74C373,,

1820,2216,74C374,,

1820,2220,4076,,

1820,2232,4034,,

1820,2268,74LS645,,

1820,2298,Z8400A,Z80A CPU?,

1820,2357,74C244,,

1820,2466,7555,CMOS timer,

1820,2483,75161,GPIB Control Buffer,

1820,2485,75160,GPIB Data Buffer,

1820,2488,74ALS74,,

1820,2505,68000,CPU (may be 68010),

1820,2506,74F04,,

1820,2520,75463,,

1820,2531,8250,UART,

1820,2536,74LS352,,

1820,2538,74C240,,

1820,2547,75162,GPIB Control Buffer,

1820,2548,9914,GPIB Controller,

1820,2549,8291,GPIB Interface,

1820,2557,74AS804,line driver,

1820,2564,8041,Peripheral Controller HP9836,

1820,2566,74C240,,

1820,2577,6551,Serial Chip,

1820,2621,74S255,,

1820,2622,74LS624,,

1820,2624,68B09,Microprocessor,

1820,2634,74ALS04,,

1820,2635,74ALS08,,

1820,2649,Z80B CPU,Microprocessor,

1820,2656,74ALS00,,

1820,2657,74ALS32,,

1820,2673,3870,"""Microcontroller 82165 GPIO""",

1820,2692,74F86,,

1820,2698,74F240,,

1820,2718,8039,ROMless microcontroller,

1820,2724,74ALS573,,

1820,2737,8048,Programmed for 82163 video interface,

1820,2739,74ALS02,,

1820,2740,74LS688,,

1820,2772,74ALS112,,

1820,2774,74ALS20,,

1820,2775,74ALS10,,

1820,2809,3870,"""Microcontroller 82165 GPIO""",

1820,2813,MM58167,Real Time Clock,

1820,2861,74F138,,

1820,2862,DS3667,,

1820,2948,8088-2,8MHz CPU,

1820,2960,COM8116,Baud Rate Generator,

1820,2975,C-2000,"""Gate Array backplane 27110 HPIB etc""",

1820,2983,68B21,PIA,

1820,2998,74HC373,,

1820,3084,8048,Programmed for 82169 HPIB interface,

1820,3089,7201,NEC Serial Chip,

1820,3100,74ALS138,,

1820,3121,74ALS245,,

1820,3167,74LS592,,

1820,3217,74ALS569,,

1820,3218,8048,Programmed for 82164 RS232,

1820,3258,74ALS137,,

1820,3267,C2000 Masked,Gate Array 98196 Mux,

1820,3321,1489,,

1820,3322,1488,,

1820,3331,Z8530,Serial Comms Controller,

1820,3358,16R6,PAL,

1820,3359,16R4,PAL,

1820,3378,74ALS373,,

1820,3420,PAL16L8,HP150 RAM Card,

1820,3431,75160,,

1820,3439,74ALS253,,

1820,3443,74AS808,,

1820,3465,74ALS174,,

1820,3466,74ALS175,,

1820,3467,74ALS832,,

1820,3513,75161,,

1820,3542,74AS373,,

1820,3545,80C96,,

1820,3608,74AS04,,

1820,3636,8048L,HPIB Thinkjet I/O PCB,

1820,3659,WD2793,Disk Controller,

1820,3695,74AS374,,

1820,3707,74ALS541,,

1820,3730,74AS08,,

1820,3766,WD2010,Hard Disk Controller,

1820,3825,Z8536,Parallel/Counter,

1820,3828,AM7990,,

1820,3883,Kaze,HP150-II Graphics Gate Array,

1820,3905,74ALS623,,

1820,3926,68000,10MHz,

1820,3936,8049,RS232 Thinkjet I/O PCB,

1820,3957,Pamela,HP150-II Memory gate array,

1820,4092,8742,HP150-II HP-HIL System,

1820,4192,PAL16R8,98625 GPIB card,

1820,4193,PAL16L8,98625 GPIB card,

1820,4194,16R4,LANIC,

1820,4195,16R6,LANIC Ethernet,

1820,4213,PAL20R8,98625 GPIB card,

1820,4222,Z8611-12,Masked Microcontroller 27110 HPIB,

1820,4401,AM7992,,

1820,4765,HAL16L8,HP150 Expanded RAM card,

1820,4766,HAL20X8,HP150 Expanded RAM card,

1820,4767,PAL20L10,HP150 Expanded RAM card,

1820,4768,PAL20L10,HP150 Expanded RAM card,

1820,4875,16R8,"""PAL 27110 HPIB",

1820,5980,16R6,"""PAL Lanic",

1820,5992,AM9516,,

1820,0018,??,"""Op-amp standard pinout",

1820,0051,uA702,Op-amp,

1820,0054,7400N,,

1820,0055,7490,TTL COUNTER,

1820,0056,7492,TTL COUNTER,

1820,0063,7451,,

1820,0068,7410,TTL GATE,

1820,0069,7420,,

1820,0070,7430,,

1820,0071,7440,TTL BUFFER,

1820,0072,7450,TTL ,

1820,0074,7454,,

1820,0075,7473,* TTL FF,

1820,0077,7474,* TTL DUAL D FF,

1820,0084,7453,,

1820,0085,7460,,

1820,0093,??,HP custom decade counter - like 7490,

1820,0094,6903 (SIM 7400),* DTL ,

1820,0099,7493,* TTL COUNTER,

1820,0107,??,Interface Buffer,

1820,0116,??,HP custom latch - like 7475,

1820,0125,711 ?,Dual Comparator,

1820,0174,7404,* TTL HEX INVERTER,

1820,0175,7405,,

1820,0196,uA723,* VOLTAGE REGULATOR (TO-99),

1820,0203,SL8940,"""Op-Amp ext comp Standard pinout",

1820,0223,??,"""Op-Amp ext comp Standard pinout",

1820,0233,74193,* TTL COUNTER,

1820,0244,SL701,Op-amp,

1820,0245,SL702,Op-amp,

1820,0250,??,6 Bit Comparator - 5055 Printer,

1820,0258,8193,DTL Dual JK flip-flop,

1820,0261,74121,* TTL ONE-SHOT,

1820,0269,7403,,

1820,0281,74107N,,

1820,0282,7486,* TTL GATE,

1820,0294,74164,,

1820,0321,uA710,* COMPARATOR (TO-99),

1820,0328,7402,,

1820,0348,4506,DTL Dual 4-input NAND,

1820,0363,7482,,

1820,0364,7491,,

1820,0370,74H00,,

1820,0371,74H10,,

1820,0373,74H20,,

1820,0376,74H40,,

1820,0380,74H53,,

1820,0383,74H60,,

1820,0386,74H71,,

1820,0430,78H05,TO3,

1820,0443,14960,Looks like 7493?,

1820,0468,74S45,16 PIN,

1820,0471,7406 ?,14 PIN,

1820,0477,/727??,8 PIN NAT SEMI,

1820,0478,??,"""Op-Amp ext comp TO99 Standard pinout",

1820,0493,LM307,Op amp,

1820,0495,B105 ?,24 PIN,

1820,0509,MC1488L,* RS232 DRIVER,

1820,0511,7408?,14 PIN,

1820,0513,7409,,

1820,0514,7426,,

1820,0535,SN55451BP,DRIVER IC,

1820,0537,7413?,,

1820,0567,MC4024,Dual VCO ?,

1820,0583,74L00,,

1820,0584,74L02,,

1820,0586,74L04,,

1820,0587,74L10,,

1820,0590,74L51,,

1820,0591,74L54,,

1820,0594,74L72,,

1820,0595,74L73,,

1820,0596,74L74,,

1820,0599,74L95,,

1820,06?1?,74s64n,,

1820,0620,74153,,

1820,0621,7438,,

1820,0622,74151,,

1820,0627,93L01??,BCD-Dec decoder,

1820,0627,93L0159??,* LTTL IC BCD TO DEC DECODER,

1820,0629,74S112N,,

1820,0640,74150,,

1820,0655,7425,,

1820,0656,74L98,,

1820,0658,93L12DC,Mux,

1820,0668,7407 ?,14 PIN,

1820,0681,74S00N,,

1820,0682,74S03,,

1820,0683,74S04N,,

1820,0684,74S05,,

1820,0685,74S10,,

1820,0686,74S11,,

1820,0688,74S20N,,

1820,0693,74S74N,,

1820,0702,93L1159,1-16 decoder,

1820,0704,74122,,

1820,0706,9324,5-bit comparator,

1820,0710,SL17315=74157,Mux,

1820,0716,74161,,

1820,0742,,8 * D type Flip Flop or Latch,

1820,0744,7497,,

1820,0777,?74L42,BCD-Decimal decoder,

1820,0788,SN35431=74174?,,

1820,0798,??,HP custom - 6 decade counter,

1820,0799,75452,,

1820,0839,74175,,

1820,0876,74L75,,

1820,0904,93L24,Comparator,

1820,0939,4013,,

1820,0946,QQ8042 ?,14 PIN,

1820,0981,,14 PIN,

1820,0990,1489,RS232 Receiver,

1820,1016,75453,,

1820,1487,,Logic Pulsar IC - 546A,

1820,1600,4093,quad schmitt input NAND,

1820,1610,,Logic Probe IC - 545A,

1820,1688,74LS247,BCD - 7SEG,

1820,2131,MC3870P,,

1820,2132,ICM7218A,LED DRIVER,

1820,2139,,Multiple Register Counter? - 5315B Counter?,

1820,2171,,ECL Pre Scaler,

1820,4790,74ALS245 - SMD ,Surface mount octal Tristate Transceiver,

1820,5053,74F125 - SMD,Surface mount buffer ,

1820,5950,74AC04 - SMD,Surface mount hex inverter,

1820,5934,74AC138 - SMD,Surface mount 3 - 8 demux,

1820,6066,74AC245 - SMD ,Surface mount octal Tristate Transceiver,

1820,0256,MC858,DTL Quad 2-input NAND,

1821,0001,CA3046,5 NPN TRANSISTORS,

1826,1014,78H12,,

1826,1218,7824,,

1826,0009,??,"""Opamp ?? - TO99",

1826,0051,,14 PIN,

1826,0059,LM201,,

1826,0064,uA733,AMPLIFIER IC,

1826,0065,LM311P,COMPARATOR IC,

1826,0065,LM311,,

1826,0072,LM208,,

1826,0081,LM318,TO99 Package,

1826,0089,??,"""Op-Amp TO 99",

1826,0106,7815,,

1826,0111,,METAL CAN,

1826,0122,7805,,

1826,0123,,TO3,

1826,0138,SM340 /LM339,14 PIN,

1826,0147,7812,,

1826,0167,CA3094,TO99 Package,

1826,0174,MC3302,14 PIN,

1826,0174-1,MC3302,14 PIN,

1826,0180,555,,

1826,0181,78H05,,

1826,0188,MC1408,8-BIT DAC,

1826,0194,NE592,,

1826,0210,NE527,Comparator - NE529??? LM361,

1826,0214,7915,,

1826,0271,741,,

1826,0291,LM324,Quad Op amp,

1826,0294,7912,,

1826,0346,LM358,Dual Op amp,

1826,0357,LF357,OP AMP IC,

1826,0393,LM317T,,

1826,0412,LM393,DUAL COMPARATOR IC,

1826,0424,MC3405P,Dual Op amp,

1826,0426,AM687ADL,Dual Comparator,

1826,0450,TL497,Voltage reg,

1826,0467,MC1403P1,Voltage Ref precision,

1826,0493,LM308,,

1826,0522,TL074,Quad Op-Amp,

1826,0527,LM337T,,

1826,0544,MC1403,Voltage ref,

1826,0589,,,

1826,0635,OP-07CP,,

1826,0698,AD590JH,Temperature Sensor,

1826,0719,LM346,,

1826,0774,LM385BZ,,

1826,0822,AD524KH,Instrumentation Op-amp,

1826,0903,MC1372,Video Modulator,

1826,0904,LM330T-5.0,,

1853,0012,2N2904A,* TRANSISTOR ,

1853,0031,2N3789,* TRANSISTOR ,

1853,0036,,Transistor PNP 310mW 250Mhz,

1853,0045,2N 4036,Metal can,

1853,0051,2N4037,TRANSISTOR ,

1853,0258,2N4035,* PNP TRANSISTOR ,

1853,0312,2N5160,* PNP TRANSISTOR ,

1853,0363,X45H281,50W PNP Transistor,

1853,0389,,350mW PNP TO-92 Transistor,

1853,0414,2N6423,* TRANSISTOR ,

1853,0412,,Transistor PNP ,

1854,0012,2N2904A,TRANSISTOR ,

1854,0039,2N3053,TRANSISTOR ,

1854,0053,2N2218,TRANSISTOR ,

1854,0063,2N3055,* NPN TRANSISTOR ,

1854,0345,2N5179,* NPN TRANSISTOR ,

1854,0477,2n2222A,to18 NPN Transistor,

1854,0743,2N5878,* NPN TRANSISTOR ,

1854,0784,2N3866A,* NPN TRANSISTOR ,

1854,0809,2N2369A,* NPN TRANSISTOR ,

1854,0955,2N5662,TRANSISTOR TO-5,

1854,0699,,Transistor NPN 30W,

1855,0213,,Dual Jfet N chan D mode TO78,

1855,0228,,Jfet N chan D mode TO-92,

1858,0040,CA3127,Transistor Array,

1858,0044,MPQ3904 (?),* 4 NPN TRANSISTORS ,

1858,0047,uln2003an,npn darlington trnsistor array,

1858,0050,CA3082,NPN 7-transistor array,

1858,0058,TPQ3906,? 4 PNP Transistors,

1858,0097,ULN2023A,,

1858,0099,MC1413,7 Drivers,

1901,0050,,Diode Switching 80V 200mA 2nS,

1901,0511,iN3889,FAST RECTIFIER,

1LB3,0003,?,HPIL Chip,

1LF4,0001,?,"""Video Chip 82163",

1LG7,0064,?,"""Saturn ROM",

1LH4,0001,?,"""HPIB Buffer 40 Pin",

1LJ7,0014,Saturn,"""CPU Centronics and RS232 Thinkjet",

1LJ7,0015,Saturn,"""CPU HPIL and HPIB Thinkjet",

1LJ7,0024,Saturn,"""CPU Portable Parallel Thinkjet""",

1QF6,0066,?,"""ADC Hybrid 3421 DAQ unit""",

1QH5,0085,?,"""Input Hybrid 3421 DAQ unit""",

1RD2,6001,Cerberus,HP-HIL Master Chip,

1RE3,0001,Pacific,HP150-II Alpha Video Gate Array,

1TL1,0001,Medusa,HPIB Controller (48 pin DIP),

1TL1,0006,Medusa,HPIB Controller,


#13

Can anybody help me to identify two transistors in the AC-DC circuit of an old HP-33E. What I can read on them is:

608
536

Thanks in advance

Jon Ibarra


#14

Unfortunately I cannot find a Transistor with that part no in any of my lists or nothing I can match up to it ...

I take it you mean the DC-DC Convertor ??


http://www.rskey.org/calckb01.htm suggests a 2n3904 with legs swapped around works as a replacement for one of the Transistors. are all the Transistors on this board the same type (I understand there are 4 altogether) ?

are you sure both these Transistors are shot ?

I would expect that this application was fairly non critical (part of an oscillator circuit) and that most generic types would do the job

#15

Actually, I started that list many years ago when I first got into HP repairs. I made a text file of the HP numbers, equivalents, etc. And I added notes like 'Programmed for 82164' or whatever. 'Official' equivalents lists don't include comments like that, so a list that includes them is probably based on my original list.
I sent the list to a few people and at least one of them started distributing it without checking with me first. Not that I really mind -- I believe in sharing information, and anything that can be done to keep these fine machines running is a Good Thing. But it would be nice to be associated with it...


#16

Tony From your Description it sounds like you are the originator of the Bulk of the list .

I am more than happy to include credits with the list

Regards
Richard Freeman

#17

Have you seen this huge HP cross-reference?

http://www.sphere.bc.ca/test/hp-parts/300-hpxref.pdf


#18

Thanks yes I had found that list which seems to be mostly Discrete components and another list off the internet (I have forgotten where for the moment) and added the ICs off them to my List. I started putting together this list as it was getting annoying trying to identify components in my 9825B. -The tape Drive is Faulty as the SFL flag (flip flop) gets set when the drive rewinds (Causing error 43) and I am yet to see the drive go in the Forward direction.

It has been hard enough trying to identify which component is which between the PCB and the Circuits from the Patent without these blasted HP part nos all over everything.

A friend of mine recently picked up an old Frequency Counter and ran into the same problem which was when I decided to start seeing what info people had on HP part nos

I will write more on the 9825 when I have the problems fixed although any suggestions from anyone who knows these beasties would be appreciated I appear to be getting a higher than expected Voltage into the SFL comparators which in turn sets the Servo fail Flip Flop.... - yes the Tacho is providing pulses into the Servo Circuit.

But then maybe that will take away the challenge.......:-)

Regards Richard Freeman


#19

one of the problems with the 9825 has been Identified the Servo Fail circuit has a shorted Zener Diode.
I am not sure what value this diode is yet but it is one of a pair of Back to Back diodes and the other seems OK so I will have to measure that one. Then on to the next Fault .......

Regards
Richard Freeman

#20

I have problems with two transistors I can´t identify in the AC-DC circuit of an old HP 33-E. The part numbers I can read are:

608
536

Can anybody help me to get new comercial spare parts?.

Thanks in advance

Jon Ibarra


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