The 2N3054 from Comset Semiconductors is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Emitter Cut off Current 1 mA, Collector Base Voltage 90 V, Collector Cut off Current 6 mA, Collector Emitter Breakdown Voltage 55 V. Tags: Through Hole, NPN Transistor. More details for 2N3054 can be seen below.