Zener diode 5.1 volts
A Zener diode is a particular type of diode that, unlike a normal one, 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.
Zener diodes are used for voltage regulation, as reference elements, surge suppressors, and in switching applications and clipper circuits.
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