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Which failure is caused when a capacitor's Equivalent Series Inductance (ESL) limits high-frequency switching?

A)Voltage overshoots causing dielectric breakdown
B)Reduced capacitance at lower frequencies
C)Increased equivalent series resistance (ESR)
D)Increased thermal runaway susceptibility

💡 Explanation

Voltage overshoots occur during switching because parasitic inductance causes inductive voltage spikes, due to the inductor's attempt to maintain constant current. This exceeds rated voltage causing dielectric breakdown, therefore, rather than ESR increases, under low-frequency ESL effects lessen.

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