The MMBT3906FA-7B from Diodes Incorporated is a Bipolar Junction Transistor with Emitter Base Voltage -6 V, Base Emitter Saturation Voltage -0.65 to -0.95 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 MMBT3906FA-7B can be seen below.