The BD137 from Lision Technology is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Collector Base Voltage 60 V, Collector Emitter Breakdown Voltage 60 V, Collector Emitter Voltage 60 V, Continuous Collector Current 1500 mA. Tags: Through Hole, NPN Transistor. More details for BD137 can be seen below.