Catalog > Semiconductors > Discrete Semiconductors > Transistors BC817-40 Bipolar Junction Transistor SI-N 50V 0.5A 0.25W 6C Part No: BC817-40 0.79 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 NPN Material Silicon Power Dissipation 0.25A