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# Avalanche breakdown is due to ?

Last updated date: 14th Mar 2023
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Hint:Before answering the question let us first talk about diode. A diode is a semiconductor device that functions as a current one-way switch. It allows current to flow freely in one direction while severely restricting current flow in the other.

As the electric current in the diode rapidly increases as a result of this continuous collision, a large number of free electrons are produced. A normal diode may be permanently destroyed by this sudden rise in electric current, but a Zener diode is engineered to work under avalanche breakdown and can withstand the sudden spike in current. In Zener diodes with a zener voltage $\left( {Vz} \right)$greater than $6V,$ avalanche breakdown occurs.