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Which constraint dominates when hot-carrier injection damages a MOSFET?

A)Increased threshold voltage instability
B)Reduced gate oxide capacitance
C)Increased channel mobility instantly
D)Enhanced drain current saturation

💡 Explanation

Hot-carrier injection causes electrons to tunnel and become trapped within the gate oxide. This charge accumulation degrades performance via threshold voltage instability because the electric field needed to form the channel changes, therefore degrading subthreshold behavior rather than affecting other parameters.

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