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Regenerating LICs - manufacurer's opinion (do not)

JWx

Hello!

For clarity I have asked manufacturer's support if there is something than end user can do to restore hybrid capacitors that have arrived short-curcuited and they stated that "altrough there may be methods to regenerate them, it is typically not advisable to do it for commercial or safety reasons" and risk of failure or reduced performance can be high and it is usually safer and more reliable to replace them.

So I understand that the case is not hopeless but the manufacturer is not advising it for serious use cases

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  • It's a bit disappointing that manufacturers have not created a convention of (say) different-colored sleeving on these capacitors, so that when it comes to repairing boards, people don't accidentally discharge them.

    They look almost exactly like normal capacitors : (

    Older supercaps seemed to be following a convention of white colored sleeving (at least, all the ones I purchased a few years ago, from (I believe) two different manufacturers) were colored white, which is a more unusual color for a normal capacitor.

    Hopefully PCB designers start making it clear on the board which parts are supercapacitors, perhaps with silkscreen, or even a bit of tape over any through-hole pads to prevent it accidentally touching metal for any extended periods, if the potential leakage of the tape and moisture/dirt on it is acceptable in the design.

  • in reply to shabaz

    That is interesting - I wouldn't consider colour to be a good indication as that has been used by brands to denote certain series or distinguish them from other competitor's products

    I've seen ordinary capacitors in blue, black, orange, purple and green in various shades so far.

    But I've also seen supercapacitors in black, yellow, blue, green, white and purple in my research thus far.

    The first supercapacitor I may have seen would have been one for time backup in a Panasonic (Matsushita) VCR from the late 1980s that was one of their "GoldCap" series. They were sleeved in black and printed in gold - not unlike premium aluminium electrolytics of today.

    image

    Maybe we need some distinguishing feature, although I'm not sure colour on its own is enough ...

    - Gough

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  • in reply to shabaz

    That is interesting - I wouldn't consider colour to be a good indication as that has been used by brands to denote certain series or distinguish them from other competitor's products

    I've seen ordinary capacitors in blue, black, orange, purple and green in various shades so far.

    But I've also seen supercapacitors in black, yellow, blue, green, white and purple in my research thus far.

    The first supercapacitor I may have seen would have been one for time backup in a Panasonic (Matsushita) VCR from the late 1980s that was one of their "GoldCap" series. They were sleeved in black and printed in gold - not unlike premium aluminium electrolytics of today.

    image

    Maybe we need some distinguishing feature, although I'm not sure colour on its own is enough ...

    - Gough

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