Polymer Aluminum Electrolytic Capacitors Failure Mode

Main failure modes

ECAS/ECNS series are carried out enough debug and screening in process.
Possibility of failure is low, and electrical characteristic is stable.

  • Accidental Failure : Short mode

    If more than allowable load (thermal stress / electric stress / mechanical stress) applied, rarely cause the breakdown of the dielectric layer and reach short circuit.

  • Wear-out Failure : Open mode

    Conductive polymer become depleted out, then Cap value decreased under high temperature. Finally it will become open mode. It is life expectancy of ECAS/ECNS series. The cap drop speed is very slow as you can see in below data.

Failure Mode in Market

Failure Mode in Market is Open mode mainly.