The 2N3771 from Mospec Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 5 mA, Collector Base Voltage 50 V, Collector Cut off Current 2 mA, Collector Emitter Voltage 40 V. Tags: Through Hole, NPN Transistor. More details for 2N3771 can be seen below.