Question

what is the difference btween avalanche breakdown and zener breakdown

Answer 1

Difference Between Avalanche & Zener Breakdown. One of the major difference between the Avalanche and the Zener breakdown is that the Avalanche breakdown occurs because of the collision of the electrons, whereas the Zener breakdown occurs because of the high electric field. ... Thus develop the small reversed bias current.
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Answer 2

Explanation:

Avalanche breakdown is a phenomenon that can occur in both insulating and semiconducting materials. It is a form of electric current multiplication that can allow very large currents within materials which are otherwise good insulators. It is a type of electron avalanche

In electronics, the Zener effect is a type of electrical breakdown, discovered by Clarence Melvin Zener.