The UMH1NHE3 from Micro Commercial Components is a Bipolar Junction Transistor with Emitter Base Voltage -10 to 40 V, Collector Base Voltage 0.3 V, Collector Emitter Breakdown Voltage 50 V, Collector Emitter Voltage 50 V, Continuous Collector Current 0.5 µA. Tags: Surface Mount, NPN Transistor. More details for UMH1NHE3 can be seen below.