The KTC3198-BL from KEC Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 1 V, Emitter Cut off Current 0.1 µA, Collector Base Voltage 60 V, Collector Cut off Current 0.1 µA. Tags: Through Hole, NPN Transistor. More details for KTC3198-BL can be seen below.