Question

Avalanche breakdown is due to

• A. Collision of minority charge carrier
• B. Increase in depletion layer thickness
• C. Decrease in depletion layer thickness
• D. None of these

Answer 1

Answer: (A)

Collision of minority charge carrier

Answer 2

At high reverse voltage, the minority charge carriers, acquires very high velocities. These by collision break down the covalent bonds, generating more carriers. This mechanism is called Avalanche breakdown.