The SFT5004/59 from Solid State Devices is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 1.45 to 2.2 V, Emitter Cut off Current 1 mA, Collector Base Voltage 150 V, Collector Cut off Current 0.5 mA. Tags: Surface Mount, NPN Transistor. More details for SFT5004/59 can be seen below.