BUY 2N5551S-RTK/P https://www.utsource.net/itm/p/4031961.html

2N5551S-RTK/P is a NPN silicon epitaxial planar transistor manufactured by ON Semiconductor. It is a low-power, low-voltage, high-speed switching device designed for use in switching applications. Features: * Low collector-emitter saturation voltage * Low collector-emitter leakage current * High switching speed * Low noise Applications: * Switching applications * High-speed switching circuits * Low-power switching circuits * Low-voltage switching circuits (For reference only)