25PCS ON Semiconductor 1N5227B 1N5227 Zener Single Diode 3.6 V 500 mW DO-35 New | eBay
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