The 2SD2153-U from SeCoS Corporation is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Emitter Cut off Current 0.5 µA, Collector Base Voltage 30 V, Collector Cut off Current 0.5 µA, Collector Emitter Breakdown Voltage 25 V. Tags: Surface Mount, NPN Transistor. More details for 2SD2153-U can be seen below.