The BCX70J-TP from Micro Commercial Components is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 600 to 1050 mV, Emitter Cut off Current 20 nA, Collector Base Voltage 45 V, Collector Cut off Current 0.02 to 20 µA. Tags: Surface Mount, NPN Transistor. More details for BCX70J-TP can be seen below.