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Question
Distinguish between avalanche breakdown and Zener breakdown.
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Solution
| Sr. No. | Avalanche breakdown | Zener breakdown |
| 1. | The phenomenon of increasing the free electrons or current in the semiconductor by applying a higher voltage | The process in which electrons are moving across the barrier from valence band of P-type material to conduction band of lightly filled n-material |
| 2. | Depletion layer is thick | Depletion layer is thin |
| 3. | Electric field is weak | Electric field is strong |
| 4. | Produces pairs of electrons and holes | Produces electrons |
| 5. | Doping is low | Doping is heavy |
| 6. | Breakdown voltage vary | Voltage remains constant |
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