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If the PIV rating of a diode is exceeded

  • If the PIV rating of a diode is exceeded the diode is destroyed.
  • The PIV rating of a diode is the maximum reverse voltage that the diode can withstand without experiencing breakdown or permanent damage.
  • When a diode is reverse-biased, a small amount of reverse current flows through it due to the minority carriers present in the semiconductor material.
  • As the reverse voltage across the diode increases, the reverse current also increases until a critical voltage is reached.
  • At this voltage, the reverse current increases rapidly, leading to avalanche breakdown or Zener breakdown.
  • This breakdown can cause permanent damage to the diode.