BUY BYD77D https://www.utsource.net/itm/p/11296632.html
BYD77D Fast Recovery Diodes 200V 0.85A/850mA 0.98V/980mV 25nS LL35/SOD87 marking 7 avalanche rectifier/low leakage current
Description: BYD77D is a NPN silicon planar epitaxial transistor manufactured by NXP/Philips. Features: Low collector-emitter saturation voltage High current gain High switching speed Low noise High reliability Low power dissipation Applications: Audio amplifiers High frequency switching circuits Low noise amplifiers Voltage regulators Motor control circuits Power switching circuits (For reference only)