Polymer vs Standard Aluminum Capacitor Failure
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@varsovie1
All polymer capacitors have lower manufacturer's surge voltage rating than standard AL capacitors. This is due to the self-healing mechanism of polymer being much slower. The lengthened period of excessive leakage current can cause failure. This is one reason why polymer capacitors have higher leakage current specifications.
The un-scored vent method of most polymer is similar to many AL caps in small can sizes. Scored venting is only necessary in larger can sizes.
rustybx 2 months ago
You can make movie of exploding polymer capacitor - many people will be scared.
I know polymer are more resistant instead of classic one with electrolyte. Standard cap looks like boiling so pressure is slowly get out ... for poly tube keep presure very long then boom.
varsovie1 2 months ago
@ssbjor Dark caps are 63V 7,000 hr 105C standard aluminum. Silver are polymer. Large can caps on the bottom are bulk/decoupling caps.
rustybx 6 months ago
Are the dark caps polymer or std aluminum?
ssbjor 6 months ago