The KTC3203-O from SeCoS Corporation is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 0.1 µA, Collector Base Voltage 35 V, Collector Cut off Current 0.1 µA, Collector Emitter Breakdown Voltage 30 V. Tags: Through Hole, NPN Transistor. More details for KTC3203-O can be seen below.