Capacitor Plague - Electrolytic Capacitor Failures After 2007

Electrolytic Capacitor Failures After 2007

SEM image and EDX fingerprint analysis
Surface of "fresh" anode from a 1000 uF/10 V electrolytic capacitor; the pore openings in the anode are clearly visible, the surface is covered with aluminum oxide.
Surface of anode from a failed 1000 uF/10 V electrolytic capacitor; aluminum hydroxide has overgrown all structures on the anode. Failure occurred at the end of the calculated life span.

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