BUY 2N5551 https://www.utsource.net/itm/p/10983.html
NPN General Purpose Amplifier
2N5551 is a NPN transistor in a TO-92 package. It is designed for general purpose switching and amplifier applications. Description: The 2N5551 is a NPN general-purpose transistor manufactured by STMicroelectronics. It is designed for general purpose switching and amplifier applications. Features: Low collector-emitter saturation voltage High current gain High breakdown voltage Low noise High switching speed Applications: Audio amplifiers High frequency switching Motor control Relay drivers Power switching circuits (For reference only)