BUY BFY50 https://www.utsource.net/itm/p/876557.html
NPN medium power transistors
Package: CAN-3, ST Description: BFY50 is a NPN silicon planar epitaxial transistor designed for use in audio amplifiers and drivers utilizing complementary or quasi-complementary circuits. Features: Low Collector-Emitter Saturation Voltage High DC Current Gain High Power Dissipation High Frequency Operation Low Noise Applications: Audio Amplifiers Drivers Quasi-Complementary Circuits (For reference only)