The BC55-10PAS from Nexperia is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 100 nA, Collector Base Voltage 60 V, Collector Cut off Current 0.1 to 10 uA, Collector Emitter Voltage 60 V. Tags: Surface Mount, NPN Transistor. More details for BC55-10PAS can be seen below.