Recapping of Corsair VS450

[Behemot]

Re: Recapping of Corsair VS450

They are always more expensive AND they have huge MOQs. Sometimes they may be cheaper in retail than other comparable brands but the reason is that particular reseller just takes milions of Pannies and only a fraction of that other brand.

I almost don't see them in the kind of electronics I use or review, Chemi-Con is absolutelly prevalent, sometimes Rubycon, Hitachi for primaries. Why do you think is that? Occams razor - they have frelled pricing&order quantity policy.

[stj]

Re: Recapping of Corsair VS450

older industrial supplys from company's like Delta and Sony often have panasonics in them.

[Wester547]

Re: Recapping of Corsair VS450

For people I usualy meet, high freqency is 1 MHz, more like 10 MHz. Definitelly not 20-100 kHz we have in SMPS.

It very well depends on the design, but for usual SMPS, 60 kHz, capacity is more important than ESR (as long as you have *some* kind of low-ESR). Only if you want to filter HF (1 MHz) ripple (harmonics), than you need ultra-low. Polymers are used these days, no wet lytic is close enough. Seems like really you are just making up whatever you can to keep pushing the KZE…whatever, I'll use cheaper caps *and* better caps.

Not making up anything, and there's nothing wrong with KZE so long as you use them right. There is a reason why the ripple voltage goes out of spec when the ESR of capacitors sky rockets on the output filter of a SMPS (though it depends on what the feedback loop can tolerate as well, don't want to go too low either, and it also depends if the magamp circuit is used or if it's a synchronous buck DC-DC converter, etc...). Not like that would happen if the capacitance dropped but the ESR remained within spec. Not saying that capacitance isn't imperative as it helps with transients and does play a bit of a part in smoothing the 120Hz noise on the output that the input lytics miss (though for that to make a tangible difference you would need some earnest capacitance, but ferrite coils in the output filter help with such spikes as well). For low ripple frequencies like 120Hz (IE the input side), capacitance and ripple current becomes more of an issue. At frequences like 50-100KHz, ESR dominates. At frequences above 200KHz, inductance becomes more of a dominating factor.

I don't ever recall seeing Panasonics being a stock choice on the output side of a SMPS for any of the major brands, only the input.