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Electronic Devices & CircuitsPN Junction Diode

The approximate forward voltage drop of a conducting silicon diode at ordinary current levels is commonly taken as?

  • A0.1 V
  • B0.3 V
  • C0.7 V
  • D5 V
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Correct Answer: C. 0.7 V
Explanation: For basic circuit analysis, a forward-biased silicon PN diode is commonly approximated as having about a 0.7 V drop, although the actual value depends on current and temperature.
Reference: Standard electronics: silicon diode approximation
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