bc303Type Desnator: BC303 Material of Transistor: Si Polarity: PNP Maximum Collector Power Dissipation (Pc): 0.85 W Maximum CollectorTHE BC303, BC304 ARE PNP SILICON PLANAR EPITAXIAL. TRANSISTORS RECOMMENDED BC303 only. 85. V. Collector Cutoff Current. Emitter Cutoff Current.