The BC858AT from Yangjie Electronic Technology is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Emitter Cut off Current -100 nA, Collector Base Voltage -30 V, Collector Cut off Current -15 nA, Collector Emitter Breakdown Voltage -30 V. Tags: Surface Mount, PNP Transistor. More details for BC858AT can be seen below.