BUY BUZ12 https://www.utsource.net/itm/p/1240610.html
SIPMOS Power Transistor (N channel Enhancement mode Avalanche-rated)
Description: BUZ12 is a NPN power transistor manufactured by Siemens. It is a TO-220 package with a maximum collector-emitter voltage of 800V, a maximum collector current of 12A, and a maximum power dissipation of 75W. Features: - High breakdown voltage - Low saturation voltage - High switching speed - Low thermal resistance Applications: - Switching power supplies - Motor control - Lighting control - High power amplifiers (For reference only)