Transistors
Small Signal Pin-Out Key
2N3904 - NPN
-A- 1E 2B 3C
2N3906 - PNP
-A- 1E 2B 3C
2N2222A - NPN
-A- 1E 2B 3C
PN2222A - NPN
-A- 1E 2B 3C
2N4401 - NPN
-A- 1E 2B 3C
2N4403 - PNP
-A- 1E 2B 3C
J-FET Pin-Out Key
2N5459 -N-Chan
-A- 1D 2S 3G
2N3823 -N-Chan
MPF102 - N-VHF
-A- 1D 2S 3G
Power Pin-Out Key
TIP31 - NPN
-B- 1B 2C 3E
TIP32 - PNP
-B- 1B 2C 3E
TIP41 - NPN
-B- 1B 2C 3E
TIP42 - PNP
-B- 1B 2C 3E
MOSFET Pin-Out Key
2N7000 -N-Chan
-A- 1E 2B 3C
ZVN3306A N-Chan
-A- 1E 2B 3C
Power Darlington Pin-Out Key
TIP102 - NPN
-B- 1B 2C 3E
TIP106 - PNP
-B- 1B 2C 3E
TIP120 - NPN
-B- 1B 2C 3E
TIP121 - NPN
-B- 1B 2C 3E
TIP122 - NPN
-B- 1B 2C 3E
TIP125 - PNP
-B- 1B 2C 3E
Unijunction Pin-Out Key
2N2646
-C- 1(B1) 2E 3(B2)
Adam's
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