BUY 2N5551S https://www.utsource.net/itm/p/11276040.html
2N5551S NPN Transistors(BJT) 180V 600mA/0.6a 100~400MHz 80~250 500mV/0.5V SOT-23/SC-59 marking ZF high voltage amplifier
Description: The 2N5551S is a NPN silicon transistor manufactured by KEC. It is designed for general purpose amplifier and switching applications. Features: - Low Collector-Emitter Saturation Voltage - High Current Gain - Low Noise - High Switching Speed - High Reliability - Low Collector-Base Voltage Applications: - Audio Amplifiers - Switching Circuits - High Frequency Amplifiers - Low Noise Amplifiers - High Speed Switching Circuits (For reference only)