The MMBTA44-TP from Micro Commercial Components is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 0.75 V, Emitter Cut off Current 0.1 µA, Collector Base Voltage 400 V, Collector Cut off Current 0.1 µA. Tags: Surface Mount, NPN Transistor. More details for MMBTA44-TP can be seen below.