LED | Definition, Lights, Types, & Facts | Britannica
Electronics Curiosities - What is Zener diode and its working? A Zener diode is a silicon semiconductor device that permits current to flow in either a forward or reverse direction. The diode
Light-emitting diode - Wikipedia
Zener diode - Wikipedia
DO-204 - Wikipedia
Dioda Zener - principii şi aplicații - exemple de utilizare a diodelor zener