BUY 1N4729A 3.6V 1W (50pcs) https://www.utsource.net/itm/p/6498905.html
Description: The 1N4729A is a 1W Zener Diode with a nominal zener voltage of 3.6V. It is a DO-41 package with a maximum power dissipation of 1W.
Features:
Nominal Zener Voltage: 3.6V
Maximum Power Dissipation: 1W
Package: DO-41
Applications:
Voltage regulation
Voltage stabilization
Overvoltage protection
(For reference only)