Sacon FZ and Ripple

[bigbeark]

So Sacon FZ 15600 6.3v are "theoretically" rated for 1800ma but they literally blow their tops. The one I removed from my EVGA board failed open - the ESR was infinite! I've never seen that before.

Let's assume that they vent because of excessive ripple, pretty likely. So logically it follows that they are NOT capable of handling 1800ma ripple current and in all likelihood their ripple handling capability is WAY lower than their theoretical rating.

At what ripple current are these things blowing up?

If you have a good power supply and are not operating beyond its "clean power" capability, what ripple current are you likely to experience?

I would expect that most boards or video cards over-spec the caps to make sure they get out of the warranty period.

Does anybody actually test these things to see if they come anywhere near
their ratings?

[Toasty]

Re: Sacon FZ and Ripple

Sacon FZ are bad from the git-go. Has nothing to do with the load or stress or heat. BAD electrolyte. Replace on sight. Search for PCBONEZ's assorted posts on these. Deliberately branded to look like UCC poly caps.

Sacon = Evercon = GSC

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[Toasty]

Re: Sacon FZ and Ripple

Let's assume that they vent because of excessive ripple, pretty likely.

No.

So logically it follows that they are NOT capable of handling 1800ma ripple current and in all likelihood their ripple handling capability is WAY lower than their theoretical rating.

Yes

At what ripple current are these things blowing up?

Unknown quantity. There are no "good ones" to test. Not that they were -ever- any good.

If you have a good power supply and are not operating beyond its "clean power" capability, what ripple current are you likely to experience?

Supply circuit design & caps determine ripple. Ripple voltage is what is left on the line after the caps are done. Ripple current is what the caps experience when filtering. Higher ripple current rating and lower ESR rating = lower ripple voltage and the -ability- to handle the rated current without damage.

I would expect that most boards or video cards over-spec the caps to make sure they get out of the warranty period.

Not true. Bean counters rule the day. CHEAPest to make it work.

Does anybody actually test these things to see if they come anywhere near their ratings?

Not on these, I would be sure. Numbers were "generated" to sell the goods. After that, they disappeared, only to show up as GSC or Evercon.

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