Description:
The 2N4427 is a silicon NPN transistor in a 
TO39 type package designed for amplifier, 
frequency mul-tiplier, or oscillator applications 
in military and industrial equipment. Suitable 
for use as output driver or pre driver stages, in
VHF and UHF equipment. 



Max collector to basis voltage 40V 
Max collector to emitter voltage 20V 
Max emitter to basis voltage 2V 
Max collector current 400 mA 
Max junction temperature 200 C 
Max dissipation at 25 C free air 1 W 
Min cut-off frequency 500 MHz 
Max collector to basis capacity 4 pF 
Transistor gain factor 10/200 (Ic=100 mA)