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RE: Elna Cerafine service life?

Posted by Lew (A) on June 7, 2017 at 17:52:29

In Reply to: Elna Cerafine service life? posted by robertpeterson56 on June 7, 2017 at 13:57:17:

I have several NOS high voltage (350V to 500V) ELNA Cerafine capacitors, some of which have never been used and all of which are at least 10 years old, since I purchased them; no telling how long since manufacture. I also own a Sencore capacitor tester which can measure ESR and leakage as well as capacitance. On my tester, they all tested high or low compared to their labels for capacitance and all exhibit higher than typical ESR compared to some ELNAs of similar age but which are in regular use. Some show more leakage current than one would like. Physically, they all look as new. No bulges or mechanical leakage at all. I'd like to salvage mine, probably need to re-form them, but I am not quite sure what is the best way to do that. Bottom line: the fact that yours look OK does not mean they are in perfect shape, based on my experience.

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