Causes and Countermeasures for Capacitor Failure: Short Circuit Failure

Explanation of failure modes and factors! There is also a risk of ignition due to reactions with oxygen in the air.

When a capacitor experiences a short circuit failure, it can no longer easily accumulate charge as current flows through it. For example, if a capacitor connected between the input side and ground to eliminate ripple current or noise shorts, a large current will flow from the input to ground. Causes of short circuit failures include applying voltage beyond the rated value, conducting ripple current, and usage under high temperature or high humidity. Additionally, for polarized capacitors, applying pure AC voltage or reverse voltage can also lead to shorts. Furthermore, because the dielectric of a capacitor is very thin, excessive mechanical stress can damage the dielectric and cause a short. It is important not only to consider electrical factors but also to ensure that the capacitor is not subjected to shocks or vibrations. Our related catalog provides a wealth of information on various failure phenomena and case studies, as well as factors and countermeasures. Please feel free to download and take a look. *For more details, please refer to the PDF materials or feel free to contact us.*

Capacitor