BUY BZA408B https://www.utsource.net/itm/p/11289990.html
BZA408B TVS/ESD 5V SOT-163/SOT457/SC-74 marking Z8
Description: NPN Bipolar Transistor Features: - Low collector-emitter saturation voltage - High current gain - Low noise - High switching speed - Low collector-emitter leakage current Applications: - Switching applications - Audio amplifiers - Motor control - DC-DC converters - High-speed switching circuits - Low-noise amplifiers (For reference only)