The 2SC3303-O from SeCoS Corporation is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Base Emitter Saturation Voltage 1.2 V, Emitter Cut off Current 1 µA, Collector Base Voltage 100 V, Collector Cut off Current 1 µA. Tags: Through Hole, NPN Transistor. More details for 2SC3303-O can be seen below.