The MMBT3906 from HY ELECTRONIC (CAYMAN) is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.95 V, Emitter Cut off Current -100 nA, Collector Base Voltage -40 V, Collector Cut off Current -100 to -50 nA. Tags: Surface Mount, PNP Transistor. More details for MMBT3906 can be seen below.