Came across this noteworthy piece from the Electrical Technology Organization’s website. It’s called Simple Overvoltage Protection with Zener Diode.
It offers us some fascinating ideas. Here’s one that we thought was really interesting:
Zener diodes have highly doped p-n junction, which allows the device to function properly even when there is reverse voltage applied through it. However, many Zener diodes rely instead on avalanche breakdown. Both breakdown types occur in the device the only difference being, Zener effect is predominant in lower voltages whereas, the avalanche breakdown happens at higher voltages. They are used to generate low-power stabilized power supplies.
Give the rest of this remarkable piece of writing a read for more information and context.