Catalog > Semiconductors > Discrete Semiconductors > Transistors Bipolar Junction Transistor Bipolar Junction Transistor BC557A SI-P 50V 0.2A 0.5W 0.64 ZAR inc for 1 Each 3 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Additional Information Polarity PNP Material Silicon Power Dissipation 0.5A