7 Differences Between Zener Breakdown And Avalanche Breakdown
S.NO. | Zener Breakdown | Avalanche Breakdown |
1. | Zener breakdown occurs in a Zener diode when the voltage across the diode exceeds a certain threshold value. | Avalanche breakdown occurs in any type of diode when the electric field in the diode becomes strong enough to cause electrons to be accelerated to high speeds. |
2. | Zener breakdown is a controlled form of breakdown that occurs in a specific, predictable manner. | Avalanche breakdown is an uncontrolled form of breakdown that can occur randomly and unpredictably. |
3. | Zener breakdown is typically used to create a stable voltage reference in circuits. | Avalanche breakdown is typically seen as a source of noise and unwanted effects in circuits. |
4. | Zener breakdown is characterized by a sharp increase in the current flowing through the diode. | Avalanche breakdown is characterized by a rapid increase in the current flowing through the diode. |
5. | Zener breakdown is caused by the movement of electrons from the valence band to the conduction band in the diode. | Avalanche breakdown is caused by the collision of electrons with lattice ions in the diode. |
6. | Zener breakdown is typically observed at low currents and high voltages. | Avalanche breakdown is typically observed at high currents and high voltages.
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7. | Zener diodes are designed specifically to exhibit the phenomena of Zener breakdown. | Other types of diodes may exhibit avalanche breakdown under certain conditions. |
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