The SFT5553AG from Solid State Devices is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 0.9 to 1.1 V, Emitter Cut off Current 10 µA, Collector Base Voltage 100 V, Collector Cut off Current 100 µA. Tags: Surface Mount, PNP Transistor. More details for SFT5553AG can be seen below.