BUY TORX173 https://www.utsource.net/itm/p/11303802.html

Description: TORX173 is a 4-pin DIP (Dual In-line Package) transistor manufactured by Toshiba. Features: Low collector-emitter saturation voltage High current transfer ratio High breakdown voltage High gain bandwidth product High switching speed Low noise Applications: General-purpose switching Audio amplifiers Motor control Power supplies High frequency circuits (For reference only)