The BU323AP from New Jersey Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 2.2 to 3 V, Collector Emitter Voltage 400 V, Continuous Collector Current 10 A, DC Current Gain 150 to 300. Tags: Through Hole, NPN Transistor. More details for BU323AP can be seen below.