The CZT31C from Lision Technology is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Collector Base Voltage 100 V, Collector Emitter Breakdown Voltage 100 V, Collector Emitter Voltage 100 V, Continuous Collector Current 3000 mA. Tags: Surface Mount, NPN Transistor. More details for CZT31C can be seen below.