The BC261A from Comset Semiconductors is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -0.9 to -0.85 V, Collector Cut off Current -50 µA, Collector Emitter Breakdown Voltage -45 V, Collector Emitter Voltage -45 V. Tags: Through Hole, PNP Transistor. More details for BC261A can be seen below.