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Old 11-19-2020, 06:30 PM   #10
hansy
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Join Date: Sep 2020
City & State: zurich
My Country: switzerland
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Posts: 6
Default Re: Replacement Chemicon SMG caps

Quote:
Originally Posted by PeteS in CA View Post
SMG is UCC/NCC's general purpose series, not low quality. And it looks to me like they are being used appropriately.

That said, just about any of the good brands' non-aqueous low impedance series should do well:

UCC/NCC LXZ series

Panasonic FC series (is FR the newer non-aqueous low impedance series?)

Nichicon PW or PA series

Rubycon YXF

These brands' long-life aqueous series are all excellent, but aqueous parts tolerate ambient heat a little less well, and these series' lower impedance is of no special benefit.

So go with best price and availability of the series listed above, IMO.
My neighbour has a friend who is willing to replace all of my caps free of charge with Rubycons YXG series caps (they are the only ones they have at his work). My apologies as I am a complete noob - and cannot fully understand the data sheets of the caps.

smg specs:
https://www.digikey.com/catalog/en/p...mg-series/3646

rubicon:
https://www.digikey.com/catalog/en/p...g-series/25454

the high and low frequency ripple currents appear to have significant differences in values between the SMG and YXG caps. Will it be an issue with stability or cause any issues if I replace all of the smg caps for the rubycon yxg?

(its for a b&w subwoofer power board and amp board both of which are covered with chemi con SMG caps, 3 of which are faulty) - both the smg yxg are labelled as general purpose.

thank you all for your kind patience

Last edited by hansy; 11-19-2020 at 07:20 PM.. Reason: more detail
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