The BC107 from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 0.7 to 1.05 V, Collector Base Voltage 50 V, Collector Cut off Current 4 µA, Collector Emitter Breakdown Voltage 45 V. Tags: Through Hole, NPN Transistor. More details for BC107 can be seen below.