BUY SE140 https://www.utsource.net/itm/p/967217.html
Error Amplifier ICs
Package: TO-220 Manufacturer: SK Description: SE140 is a NPN silicon epitaxial transistor manufactured by SK. Features: Low collector-emitter saturation voltage High current gain High breakdown voltage Low noise High switching speed Applications: Audio amplifiers High-frequency amplifiers Switching circuits Motor control circuits (For reference only)