Case 1585 ยท Public preview
Venting and Seal Damage Can Precede an Anode Corrosion Open
Several aluminum electrolytic capacitors became electrically open after service, with bulging, venting, and seal distress visible on the failed devices.
Electrical testingOptical microscopyDissectionSEMEDSControl comparison
What the evidence preview establishes
Localized corrosion severed the anode lead or foil connection near the seal. Gas generation and vent or seal damage indicated electrical or thermal stress; ripple current, charge-discharge rate, or operating temperature were the leading contributors.
Why this case matters
Treat an open electrolytic capacitor as a pressure, sealing, and corrosion system. Pair anode dissection with actual ripple-current, temperature, polarity, soldering, and lead-spacing data.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.