BUY ZTX550 https://www.utsource.net/itm/p/1211964.html
PNP SILICON PLANAR MEDIUM POWER TRANSISTORS
Description: ZTX550 is a NPN transistor manufactured by Zetex. Features: Low voltage operation High current gain Low noise High switching speed Low power consumption Applications: Audio amplifiers Motor control circuits Switching circuits Power supplies Automotive applications (For reference only)