The BU941ZE3 from Cystech Electronics is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 2.2 to 2.5 V, Emitter Cut off Current 20 mA, Collector Base Voltage 350 V, Collector Cut off Current 100 µA. Tags: Through Hole, NPN Transistor. More details for BU941ZE3 can be seen below.