BUY BFT51 https://www.utsource.net/itm/p/1553606.html
Shortform IC and Component Datasheets (Plus Cross Reference Data)
The BFT51 is a NPN silicon planar epitaxial transistor manufactured by NXP Semiconductors. It is designed for use in audio, switching, and general purpose applications. Features: * High current gain * High switching speed * Low collector-emitter saturation voltage * Low noise Applications: * Audio amplifiers * Switching circuits * General purpose switching applications (For reference only)