BUY S8550 CJ SOT23 https://www.utsource.net/itm/p/11264928.html

Description: The S8550 CJ is a PNP Bipolar Transistor designed for use in general purpose amplifier and switching applications. Features: Low collector-emitter saturation voltage High current gain High collector current Low noise Applications: General purpose amplifier Switching applications Low noise amplifier High-speed switching (For reference only)