Zener breakdown in a semiconductor diode occurs when

Question

Zener breakdown in a semiconductor 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

Tardigrade Admin · Accepted Answer

When reverse bias is increased, the electric field at the junction also increases. At some stage the electric field breaks the covalent bond, thus the large number of charge carriers are generated. This is called Zener breakdown.

Q. Zener breakdown in a semiconductor diode occurs when

Forward current exceeds certain value

Reverse bias exceeds certain value

Forward bias exceeds certain value

Potential barrier is reduced to zero

When reverse bias is increased, the electric field at the junction also increases. At some stage the electric field breaks the covalent bond, thus the large number of charge carriers are generated. This is called Zener breakdown.