I'm looking for an NPN transistor with a collector current of about 150mA when saturated at 5mA to its base (β = 30). The collector voltage needs to be 12V when 8V applied to its base.
It also needs to handle a current increase of 15mA to its base via a selector switch.
I'm looking for an NPN transistor with a collector current of about 150mA when saturated at 5mA to its base (β = 30). The collector voltage needs to be 12V when 8V applied to its base.
It also needs to handle a current increase of 15mA to its base via a selector switch.
Thanks for the response.
I forgot to consider that there will be a resister applied directly to its base which drops majority of the voltage to it for safe operation. I think a 2N3904G would do for what I need according to its specs but not sure:
Collector Emitter Saturation Voltage, Vce(sat):0.3V
Power Dissipation, Pd:0.625W
DC Current Gain Min (hfe):40
C-E Breakdown Voltage:40V
Collector Current:0.2A
I would use PN2222A. Most BJTs specify saturation voltage with forced beta=10, which means Ib=Ic/10. With Ic=150mA and Ib=5mA (forced beta=30), it will almost certainly work, but saturation voltage is not guaranteed.