The CP310-CJD340-CT from Central Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 3 V, Emitter Cut off Current 100 µA, Collector Base Voltage 300 V, Collector Cut off Current 100 µA, Collector Emitter Breakdown Voltage 300 V. Tags: Bare Die, NPN Transistor. More details for CP310-CJD340-CT can be seen below.