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 .TO-39 Metal Can Package PNP EXPITAXIAL PLANAR SILICON TRANSISTORS Application LOW-AND MEDIUM POWER TRANSISTORS. Device Types : BC303 60V, 500mA