WEET: what is Zener Diode

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Zener diode, allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the Zener voltage is reached.

Zener diodes have a highly doped p-n junction, can reliably operate in breakdown region.

Zener reverse breakdown is due to electron quantum tunnelling caused by a high-strength electric field.

Zener diodes are widely used in electronic equipment of all kinds and are one of the basic building blocks of electronic circuits. They are used to generate low power stabilized supply rails from a higher voltage and to provide reference voltages for circuits, especially stabilized power supplies. They are also used to protect circuits from overvoltage, especially electrostatic discharge (ESD).


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Written by WEE Technology Company Limited

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