I have three crapXon KMs. 25v, 2200u, 1.2Arms, no listed ESR. Classified as general. Closest I get is UCC KMEs, which are out of stock on mouser. The other ones are that are 1.2A are classified as audio caps. Are these suitable as replacements? Not even sure low ESR/high ripple are suitable replacements. Ive seen what happens on pc psus when people have tried replacing general purpose caps with polys
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Using audio caps on smps secondaries?
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Using audio caps on smps secondaries?
Cap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meTags: None
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Re: Using audio caps on smps secondaries?
But the ones in there are not low esr and only fair ripple, they're not bloated, still I want to replace them thoughCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM me
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Re: Using audio caps on smps secondaries?
Originally posted by Uranium-235 View PostBut the ones in there are not low esr and only fair ripple, they're not bloated, still I want to replace them though
Now if it's just a regular non-flyback SMPS, you should probably go with entry-level low ESR, like Panasonic FC, Nichicon PS/PM/PW/PJ, Rubycon YXJ, or Chemicon KYA.
As to the question in the title: yes, you could probably get away with using audio-grade caps on SMPS, but it's not recommended. Audio-grade caps usually have higher ripple current capability at low frequencies (typically compared at 120 Hz or 1 KHz) compared to both general purpose and low-ESR caps. At higher frequencies in the 10's to 100's of KHz range, low-ESR caps have higher ripple current. So essentially, low-ESR caps are more suitable for high frequency circuits.Last edited by momaka; 02-05-2018, 11:56 AM.
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