Excess Operating Temperature Can Accelerate Electrolyte Loss and Capacitor Wear-Out

What the evidence preview establishes

The capacitors experienced premature wear-out consistent with excessive operating temperature. Complete electrolyte dry-out reduced capacitance, raised dissipation and ESR, and generated enough internal gas pressure to bulge the cans.

Why this case matters

Capacitor life depends on the local thermal environment, not merely the component's temperature rating. Measure temperature in the installed configuration and correlate capacitance, dissipation, ESR, pressure deformation, and electrolyte condition before assigning a lot defect.