Catalog > Semiconductors > Discrete Semiconductors > Transistors BC557A Bipolar Junction Transistor SI-P 50V 0.2A 0.5W Part No: BC557A 0.64 ZAR inc for 1 Each (Quoting) Add to Cart 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