The HM879 from Lision Technology is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Collector Base Voltage 30 V, Collector Emitter Breakdown Voltage 10 V, Collector Emitter Voltage 10 V, Continuous Collector Current 3000 mA. Tags: Surface Mount, NPN Transistor. More details for HM879 can be seen below.