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Power ElectronicsSCR Characteristics

In the forward-blocking region of an SCR, the device is forward biased but remains OFF until?

  • AIt is triggered or forward breakover is reached
  • BThe anode becomes negative
  • CThe load current becomes zero only
  • DThe cathode is disconnected
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Correct Answer: A. It is triggered or forward breakover is reached
Explanation: In forward blocking, an SCR supports positive anode-to-cathode voltage until gate triggering or breakover initiates regenerative turn-on.
Reference: Standard power electronics: scr characteristics
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