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← TechnologyWhen operating a MOSFET beyond its Safe Operating Area, which failure mode results from exceeding the pulsed drain current?
A)Secondary breakdown failure✓
B)Gate oxide tunneling increases
C)Threshold voltage instability occurs
D)Increased subthreshold leakage
💡 Explanation
Secondary breakdown occurs, because current crowding causes localized hot spots leading to destructive thermal runaway; therefore the MOSFET fails catastrophically rather than experiencing gradual parameter degradation from gate oxide or threshold voltage shifts.
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