Question

Why does is there a breakdown voltage for reverse bias diode?

Answer 1

Answer:

Breakdown voltage -

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The breakdown voltage of an insulator is the minimum voltage that causes a portion of an insulator to become electrically conductive. For diodes, the breakdown voltage is the minimum reverse voltage that makes the diode conduct appreciably in reverse. Some devices (such as TRIACs) also have a forward breakdown voltage.

Answer 2

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It is minimum voltage which causes an insulator to become electrically conductive.

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