The MPSA45 from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 0.75 V, Emitter Cut off Current 100 nA, Collector Base Voltage 400 V, Collector Cut off Current 100 nA. Tags: Through Hole, NPN Transistor. More details for MPSA45 can be seen below.