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Electronic Devices & CircuitsPN Junction Diode

For a silicon PN diode carrying current in forward bias, an increase in junction temperature generally causes the forward voltage required for the same current to?

  • AIncrease
  • BDecrease
  • CRemain exactly constant
  • DBecome equal to the reverse breakdown voltage
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Correct Answer: B. Decrease
Explanation: For a silicon diode at a given forward current, the forward voltage typically decreases as junction temperature rises; a commonly used approximate coefficient is about -2 mV/°C near ordinary operating conditions.
Reference: Standard semiconductor electronics: diode temperature behavior
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