Zener breakdown in a semi-conductor diode occurs when (A)...

Zener breakdown in a semi-conductor diode occurs when
(A) Forward current exceeds certain value
(B) Reverse bias exceeds certain value
(C) Forward bias exceeds certain value
(D) Potential barrier is reduced to zero

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Key Concepts

Zener Breakdown

Zener breakdown is a phenomenon observed in reverse-biased semiconductor diodes when the applied voltage reaches a specific threshold, known as the Zener voltage. At this point, the strong electric field in the depletion region enables electrons to tunnel across the junction, resulting in a controlled form of breakdown that is utilized in voltage regulation and reference applications.

Reverse Bias

Reverse biasing occurs when the p-type side of a diode is connected to a lower potential than the n-type side, which widens the depletion region and prevents current from flowing under normal conditions. However, if the reverse voltage exceeds a critical threshold, breakdown phenomena can occur, drastically increasing the current through the diode.

Semiconductor Diode

A semiconductor diode is an electronic component that allows current to flow primarily in one direction. It is formed by joining a p-type semiconductor with an n-type semiconductor, creating a p-n junction that exhibits unique electrical characteristics, including rectification and controlled conduction under various biasing conditions.

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