BUY 1N4733A 5.1V 1W（50pcs） https://www.utsource.net/itm/p/6498901.html

1N4733A is a 5.1V, 1W Zener Diode with a DO-41 package. It is designed for general purpose use in electronic circuits. It is used for voltage regulation, surge protection, and reverse polarity protection. It can also be used for voltage reference and voltage clamping applications. It has a maximum power dissipation of 1W and a maximum operating temperature of 150°C. The device is RoHS compliant and is available in quantities of 50 pieces. (For reference only)