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GERMANIUM TRANSISTORS
GET 104, OC44,OC70 and OC81D Transistors


The following table lists the parameters for Germanium transistors.

The column marked Case is the outline of the transistor case.

Note: Not all headings are the same parameter.

The case drawings are shown at the bottom of the page.

Cases


GEC MAZDA and STC TransistorsGEC MAZDA STC AEI HIVAC NEWMARKET TEXAS Transistors

OC139 If you know of an application for these. Please let me know.
Many thanks to Jan for updating the information on this device.

Shortcuts

Prefix AC

Prefix AD

Prefix AF

Prefix OC

Prefix GET

Prefix X

Prefix T

AEI HIVAC NEWMARKET TEXAS


Type Vcbo Max Vce Max Ic mAX Hfe f Mhz PNP/NPN Case Application
AC107 15 15 10mA 30 2 PNP GT3 Low Noise Audio
AC125 32 12 100mA 100 1.3 PNP TO1 Audio Driver
AC126 32 12 100mA 140 1.7 PNP TO1 Audio Driver
AC127 32 12 500mA 105 1 NPN TO1 Audio O/P
AC128 32 16 1A 60 1 PNP TO1 Audio O/P
AC132 32 12 200mA 115 1.3 PNP TO1 Audio O/P
AC141 50 25 1.2A 40-110 3 NPN TO1 Audio.Medium Current
AC176 32 20 300mA 50-180 1 NPN TO1 Audio.Medium Current
AC187 25 15 2A 100 1 NPN TO1 Audio O/P
AC188 25 15 2A 100 1 PNP TO1 Audio O/P
AD149 50 30 3.5A 30 0.3 PNP TO3 GP O/P
AD161 32 20 3A 80 0.02 NPN TO3 Audio Amp
AD162 32 20 3A 80 0.02 PNP TO3 Audio Amp
AF114 15 32 10Ma 150 75 PNP TO7 RF
AF115 15 32 10Ma 150 75 PNP TO7 RF
AF116 32 15 10Ma 150 75 PNP TO7 RF
AF117 32 15 10Ma 150 75 PNP TO7 RF
AF118 32 15 10Ma 150 75 PNP TO7 VHF Amp
AF125 20 20 10mA 130 75 PNP T072 RF

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MULLARD GERMANIUM TRANSISTORS
Type Pe Max mW Vce Max Ic mAX Hfe f Khz PNP/NPN Connections
OC16 6250 32 1500ma 45 200Khz PNP TO3
OC19 8000 32 1500ma 45 200Khz PNP TO3
OC22 6000 32 1000ma 200 200000 PNP TO3
OC23 6000 40 1000ma 200 25000Mhz PNP TO3
OC24 6000 40 1000ma 200 25000 PNP TO3
OC26 12500 32 3500 >20 3 PNP TO3
OC28 30000 80 6000 >20 - PNP TO3
OC29 30000 60 6000 >45 250 PNP TO3
OC35 30000 60 6000 >25 250 PNP TO3
OC36 30000 80 6000 >30 250 PNP TO3
OC41 43 15 50 40 4000 PNP T01
OC42 43 15 50 80 7000 PNP T01
OC44 2O 15 5 100 15000 PNP TO1
OC45 20 10 5 50 6000 PNP TO1
OC57 10 7 5 35 10 PNP Collector Red. Then clockwise E B
OC58 10 7 5 55 10 PNP Collector Red. Then clockwise E B
OC59 10 7 5 80 10 PNP Collector Red. Then clockwise E B
OC60 10 7 5 - 10 PNP Collector Red. Then clockwise E B
OC65 25 5 10 20-40 - PNP TO1
OC66 25 15 10 30-80 - PNP TO1
OC70 50 20 10 20 TO 40 - PNP TO1
OC71 50 20 10 30 TO 75 - PNP TO1
OC72 100 32 125 70 350 PNP TO1
OC75 75 30 10 90 900 PNP TO1
OC76 75 32 125 >15 - PNP TO1
OC77 75 60 125 45 - PNP TO1
OC81 160 32 500 50-250 1 PNP TO1 Full Specification
OC81D 160 32 20 >25 1 PNP TO1 Full Specification
OC83 160 32 500 90 850 PNP TO1
OC139 20 20 250 45 3500 NPN Base Center.C=Red Computer Switching
OC140 60 20 200 >50 4500 NPN Base Center.C=Red Computer Switching
OC170 50 20 10 100 70000 PNP TO1
OC171 50 20 10 100 70000 PNP TO1

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GEC GERMANIUM TRANSISTORS
Type V Max P Max (mW) I Max IcBo uA Hfe f (Mhz) PNP/NPN Lead Out
GET1 50 100 15 - - - PCT C=Blue. B=Single Lead
GET2 30 75 15 - - - PCT ditto
GET3 15 100 250 6 55 1 PNP C=white. Then clockwise BE
GET4 30 100 70 6 55 1 PNP ditto
GET5 30 200 350 6 - 1 PNP ditto
GET6 12 50 50 6 50 1 PNP ditto
GET7 - 16 PMax 20000 8000 40 0.25 PNP 1st British Power Transistor. Proto T03
GET8 - 32 PMax 20000 8000 40 0.25 PNP 1st British Power Transistor.Proto T03
GET9 - 64 PMax 20000 8000 40 0.25 PNP 1st British Power Transistor.Proto T03
GET15 15 600 350 10 70 0.95 PNP -
GET16 30 600 350 10 60 0.9 PNP -
GET20 30 600 500 10 60 1 PNP -
GET102 30 200 1000 - 100 1.5 PNP Red=E Green=B White=C
GET103 30 200 1000 - 55 1 PNP ditto
GET104 30 200 1000 - 55 1 PNP ditto
GET105 40 800 1000 - 30 0.9 PNP ditto
GET106 15 200 1000 - 55 1 PNP ditto
GET110 40 800 1000 - 20 1 PNP ditto
GET111 60 200 1000 - 55 1 PNP ditto
GET113 15 200 1000 - 100 1.5 PNP ditto
GET114 15 200 1000 - 55 1 PNP ditto
GET115 15 800 1000 - 30 1 PNP ditto
GET116 30 800 1000 - 30 1 PNP ditto
GET120 30 800 - 20 1.4 PNP ditto
GET571 16 18000 12000 - 30 - PNP Clockwise BCE Gap
GET572 32 18000 12000 - 30 - PNP ditto
GET573 64 18000 12000 - 30 - PNP ditto
GET691 20 45 10 - 60 30 PNP Red=E Green=B C=White
GET692 20 45 10 - 60 40 PNP ditto
GET871 15 75 150 - 45 6 PNP ditto
GET872 15 75 150 - 65 15 PNP ditto
GET873 15 75 10 - 50 6 PNP ditto
GET874 15 75 10 - 70 15 PNP ditto
GET875 15 75 150 - 90 20 PNP ditto

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MAZDA GERMANIUM TRANSISTORS
Type V Max P Max (mW) I Max IcBo uA Hfe f (Mhz) PNP/NPN Lead Out
XA101 20 120 - 5 35 5 PNP B=Centre C=White
XA102 20 120 - 5 60 8 PNP Clockwise EBC Arrow+C
XA112 20 120 - 5 60 8 PNP Clockwise EBC Arrow+C
XA121 25 80 10 8 60 - PNP EBSC S&C wider space
XA122 25 80 10 8 60 - PNP ditto
XA123 20 80 10 20 60 30 PNP ditto
XA124 20 80 10 20 60 30 PNP ditto
XA125 18 80 10 4 60 30 PNP ditto
XA126 20 80 10 20 60 30 PNP ditto
XA131 30 120 100 10 60 100 PNP Clockwise EBCS. Tag between S&C
XA141 40 800 1000 10 45 30 PNP ditto
XA142 30 120 100 10 45 50 PNP ditto
XA143 30 120 100 10 45 75 PNP ditto
XA151 15 130 - 10 20 3 PNP Clockwise EBC. Arrow=C
XA152 15 130 - 10 40 5.5 PNP ditto
XA161 13 150 100 3 50 40 PNP Clockwise EBC. Tag=E
XA162 13 150 100 3 50 60 PNP ditto
XA701 25 120 200 8 40 5 NPN Clockwise EBC. Arrow=C
XA702 25 120 200 8 50 7 NPN ditto
XA703 25 120 200 8 70 13 NPN ditto
XB102 35 150 - 10 30 - PNP B=Center C=White
XB103 35 150 - 10 66 - PNP ditto
XB104 35 150 - 10 30 - PNP ditto
XB112 35 150 - 10 30 - PNP Clockwise EBC. Arrow=C
XB113 35 150 - 10 66 - PNP ditto
XB121 35 105 - 14 60 - PNP As XA161
XC101 50 105 100 14 60 - PNP As XA101
XC121 35 250 - 10 74 - PNP As XA111
XC131 35 500 - 10 74 - PNP As XC171
XC141 40 11000 3000 - 62 - PNP E=E B=B C=Flange
XC142 60 11000 3000 - 62 - PNP ditto
XC171 26 750 - 10 72 - PNP Clockwise EBC. Arrow=C
XS101 12 150 - 5 20 - PNP Symmetrical. B=Centre

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STC GERMANIUM TRANSISTORS
Type V Max P Max (mW) I Max IcBo uA Hfe f (Mhz) PNP/NPN Lead Out
TP1 50 150 30 - - - PCT E=Red C=Black
TP2 50 150 30 - - - PCT ditto
TJ1 20 200 50 10 20 0.5 PNP E=Red B=Green C=Black
TJ2 20 200 50 10 40 0.6 PNP ditto
TJ3 20 200 50 10 60 0.8 PNP ditto
TS1 20 50 50 10 20 0.5 PNP Clockwise CBE C=White
TS2 20 50 50 10 40 0.6 PNP ditto
TS3 20 50 50 10 60 0.8 PNP ditto
TS4 30 50 50 10 10+ - PNP E.E Diametrically Opposed
TS7 12 70 - 10 35 4.5 PNP Clockwise CBE. C=White
TS8 6 70 - 10 60 8.5 PNP ditto
TS13 20 70 - 7 55 0.8 PNP Clockwise CBE C=White
TS14 20 70 - 7 35 0.7 PNP ditto
TS15 45 70 - 7 40 0.75 PNP ditto
TK20 12 200 - 0.7 40 6 PNP E&C Interchangable. C=Bevelled
TK21 20 200 - 0.5 22 2 PNP ditto
TK23 20 200 - 2 50 1 PNP Clockwise EBC. C=Swaged
TK24 20 200 - 1.5 40 3 PNP E&C Interchangable. C=Bevelled
TK25 20 200 - 0.7 60 11 PNP E&C Interchangable. C=Bevelled
TK28 20 200 - - 46 - PNP Clockwise EBC. C=Swaged
TK30 10 200 - 0.7 40 6 PNP ditto
TK31 5 200 - 0.7 60 11 PNP ditto
TK40 20 200 - 1.3 90 1.8 PNP ditto
TK41 20 200 - 1.2 40 1.1 PNP ditto
TK42 15 200 - 1.2 66 1.2 PNP ditto

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TO1 Case outline All images are viewed from below TO5 Case
TO72
TO72 		TO7
TO7
TO3 Case
The TO3 case is the collector.



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Last updated 30.8.2004




2003 © Maurice Woodhead