BUY BUZ54 https://www.utsource.net/itm/p/163161.html
Fully integrated GPS LNA IC
BUZ54 is a NPN power transistor manufactured by Siemens. It is a TO-3 package, with a maximum collector current of 15A and a maximum collector-emitter voltage of 800V. It is designed for use in high power switching applications, such as motor control, lighting control, and power supply regulation. It is also suitable for use in audio amplifiers. (For reference only)