The SFT5004J 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: Through Hole, NPN Transistor. More details for SFT5004J can be seen below.