The 2N3055A from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Emitter Cut off Current 5 mA, Collector Base Voltage 100 V, Collector Cut off Current 30 mA, Collector Emitter Voltage 60 V. Tags: Through Hole, NPN Transistor. More details for 2N3055A can be seen below.