bc303Part #: BC303. Download. File Size: 16Kbytes. Page: 1 Pages. Description: Bipolar PNP Device in a Hermetically sealed TO39. Manufacturer: Seme LAB.Replacement and Equivalent for BC303 transistor. You can replace the BC303 with the 2N5323, BC161 or BC461. If you find an error please send an email to mail