Catalog > Semiconductors > Discrete Semiconductors > Transistors 2SA1837 Bipolar Junction Transistor SI-P 230V 1A 20W 70MHz Part No: 2SA1837 8.63 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 20A