bc303The complementary NPN transistor to the BC303 is the BC301. Replacement and Equivalent for BC303 transistor You can replace the BC303 with the 2N5323 , BC161 or BC461 .PNP EXPITAXIAL PLANAR SILICON TRANSISTORS, BC303 Datasheet, BC303 circuit, BC303 data sheet : CDIL, , Datasheet, Datasheet search site for Electronic Components