The BC859BL from AiT Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.7 to, Collector Base Voltage -30 V, Collector Cut off Current -4 µA, Collector Emitter Breakdown Voltage -30 V. Tags: Surface Mount, PNP Transistor. More details for BC859BL can be seen below.