Catalog > Semiconductors > Discrete Semiconductors > Transistors Silicon NPN Power Transistor Transistor Silicon NPN Power Transistor Part No: 3DD300 5.75 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Material type: Si Polarity: NPN Maximum power dissipation (Pc): 30 W Maximum permissible collector-base voltage (Ucb): 300 V Maximum allowable collector-emitter voltage (Uce): 150 V