BUY DZ23C18-V-GS08 https://www.utsource.net/itm/p/8934620.html
DZ23C18-V-GS08 1 pair common cathode Zener Diodes 18V 300mW/0.3W SOT23-18V marking V21
Description: The DZ23C18-V-GS08 is a SOT23-18V Zener Diode from Vishay. Features: Low profile surface mount package Low leakage current Low zener impedance High temperature soldering guaranteed: 260°C/10s at terminals High temperature stability Applications: Voltage regulation Voltage stabilization Voltage clamping Surge suppression ESD protection (For reference only)