The BDX53C from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 2.5 V, Emitter Cut off Current 2 mA, Collector Base Voltage 100 V, Collector Cut off Current 200 µA. Tags: Through Hole, NPN Transistor. More details for BDX53C can be seen below.