bc303Part #: BC303. Download. File Size: 133Kbytes. Page: 3 Pages. Description: PNP EXPITAXIAL PLANAR SILICON TRANSISTORS. Manufacturer: Continental Device IndiaThe BC303 is a bipolar junction transistor (BJT) with an PNP-type confuration. That means the BC303 transistor has a negatively charged layer between two positively charged layers. This