The 2N3904  (P/N 151-0190-00,151-0224-00) is a general-purpose silicon NPN transistor that is widely used in Tek gear.

The 2N3906 is the complementary (PNP) part.

Key Specifications

VCEO 40 V
IC 200 mA
FT 300 MHz
PD 1 W

Links

Photos

Used in

Some instruments using part 2N3904

Instrument Manufacturer Class Model Description Introduced
1480 Tektronix Audio/Video 1480 NTSC waveform monitor 1976
7704 Tektronix Oscilloscope 7704 150 MHz non-storage mainframe 1969
7844 Tektronix Oscilloscope 7844 400 MHz dual-beam non-storage mainframe 1974
7903 Tektronix Oscilloscope 7903 500 MHz non-storage mainframe (?)
DM501 Tektronix Plug-in DM501 4½ digit multimeter 1972
PG502 Tektronix Plug-in PG502 250 MHz pulse generator 1974
SC501 Tektronix Plug-in SC501 5 MHz oscilloscope 1975
SC503 Tektronix Plug-in SC503 10 MHz dual-channel storage oscilloscope 1979