The SFT6340Z from Solid State Devices is a Bipolar Junction Transistor with Base Emitter Saturation Voltage 1.8 to 2.5 V, Emitter Cut off Current 100 µA, Collector Base Voltage 160 V, Collector Cut off Current 1 mA, Collector Emitter Voltage 140 V. Tags: Through Hole, NPN Transistor. More details for SFT6340Z can be seen below.