Zener Diodes Kit, 1W Power Diode Assorted Assortment Box Kit Set (3.3V/3.6V/3.9V/4.3V/4.7V/5.1V/5.6V/6.2V/6.8V/7.5V), Range 1N4728~1N4737,Pack of 200, By Ltvystore: Amazon.com: Industrial & Scientific
Électronique les Diodes
Zener diode - Wikipedia
Zener diode makes for a lousy regulator - Bald Engineer
Diode Symbols - Electronic and Electrical Symbols
2EZ300 DC COMPONENTS - Diode: Zener | 2W; 300V; Ammo Pack; DO15; single diode; 0.5uA; 2EZ300-DC | TME - Electronic components