bc303The 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. ThisPNP EXPITAXIAL PLANAR SILICON TRANSISTORS, BC303 Datasheet, BC303 circuit, BC303 data sheet : CDIL, , Datasheet, Datasheet search site for Electronic Components