BUY BZX585-C5V1,115 https://www.utsource.net/itm/p/11722988.html

Description: The BZX585-C5V1 is a Zener diode with a voltage of 5.1 V and a power dissipation of 500 mW. Features: Low leakage current Low noise High reliability High temperature stability Low thermal resistance Applications: Voltage regulation Voltage clamping Surge protection Overvoltage protection Clamping in switching power supplies (For reference only)