The 2SC4102U3T106 from ROHM Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Emitter Cut off Current 500 nA, Collector Base Voltage 120 V, Collector Cut off Current 500 nA, Collector Emitter Breakdown Voltage 120 V. Tags: Surface Mount, NPN Transistor. More details for 2SC4102U3T106 can be seen below.