The BC307B from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Collector Base Voltage 50 V, Collector Cut off Current 15 nA, Collector Emitter Breakdown Voltage 45 V, Collector Emitter Voltage 45 V. Tags: Through Hole, PNP Transistor. More details for BC307B can be seen below.