The BC557C from KEC Semiconductor is a Bipolar Junction Transistor with Emitter Base Voltage -5 V, Base Emitter Saturation Voltage -1.1 to -0.9 V, Collector Base Voltage -50 V, Collector Cut off Current -15 nA, Collector Emitter Voltage -45 V. Tags: Through Hole, PNP Transistor. More details for BC557C can be seen below.