The D44T4 from MOSPEC SEMICONDUCTOR is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 1.2 V, Emitter Cut off Current 10 µA, Collector Base Voltage 400 V, Collector Cut off Current 10 µA. Tags: Through Hole, NPN Transistor. More details for D44T4 can be seen below.