Catalog > Semiconductors > Discrete Semiconductors > Transistors IRF840 Field Effect Transistor N-FET 500V 4.5A 40W 0.85R Part No: IRF840 18.34 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 N-Channel Material Silicon Power Dissipation 40A