The TMBT3906 from Toshiba is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.85 to -0.95 V, Emitter Cut off Current -0.1 µA, Collector Base Voltage -50 V, Collector Cut off Current -0.1 µA. Tags: Surface Mount, PNP Transistor. More details for TMBT3906 can be seen below.