BUY MJ11022 https://www.utsource.net/itm/p/325232.html
The Darlington Bipolar Power Transistor is designed for use as general purpose amplifiers, low frequency switching and motor control applications. The MJ11021(PNP) and MJ11022 (NPN) are complementary devices.
Description: The MJ11022 is a high-power, NPN, silicon, power transistor in a TO-3 package. Features: High power dissipation High current gain High voltage Low collector-emitter saturation voltage Applications: Audio amplifiers Motor control Switching power supplies DC-DC converters (For reference only)