The MMST3906HE3-TP from Micro Commercial Components is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.95 to -0.65 V, Collector Base Voltage -40 V, Collector Cut off Current -50 nA, Collector Emitter Breakdown Voltage -40 V. Tags: Surface Mount, PNP Transistor. More details for MMST3906HE3-TP can be seen below.