What do you mean by zener breakdown and avalanche breakdown?

Answer Posted / prakash

Zener breakdown and Avalanche breakdown both are under
reverse bias.which are responsible for such large reverse
current.
Avalanche:-It takes place due to the drift of thermally
generated minority carriers through the junction under the
influence of external field.
Zener breakdown:-It takes place due to presence of strong
electric field and presence of large reverse bias voltage

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