BUY BZX84-B20 https://www.utsource.net/itm/p/4311773.html
Voltage regulator diodes
Description: The BZX84-B20 is a surface mount Zener diode from NXP. It is a SOT23 package with a 20V Zener voltage. Features: - Low profile surface mount package - High temperature soldering guaranteed: 260°C/10s - ESD protection: class 2 (>8kV) - High stability - Low leakage current Applications: - Voltage regulation - Clamping - Transient voltage suppression - ESD protection (For reference only)