Quote:
Originally Posted by dbfreak 
Recommendation for CR1A CR1C - CA4L/R CA5L/R for MOSFET MAX:
Panasonic FC
Nichicon PW
Nichicon Muse FG
From the above three choices, which would be the better cap for the above mentioned positions (I'd really like Panasonic FM's but can't find them in the specified sizes)?
(Excuse me if already covered before...)
|
Did you look at the MOSFET-MAX BOM:
MOSFET-MAX BOM ?
UHE's are recommended from Mouser. I can assure you, they work fine. More than that, they are superior in ESR and ripple than any you've listed. They compete well with Panasonic FM's:
UHE 1800uf 35V - 0.017 impedance, 3350ma ripple
FM 1800uf 35V - 0.014 impedance, 3820ma ripple.
I prefer FM's, too. Unfortunately, the 25mm can height is as big as they come - 1800uf 35V, or 1000uf 50V. Those are the caps that are supplied with every MiniMAX kit, in fact. However, we're not limited to 25mm heights in the MOSFET-MAX. There are many alternatives and the UHE line has some outstanding selections - those are the ones on the BOM. You can get large enough with the UHE's, in fact, to exceed those FM specs (although we don't go that far in the BOM).
I wouldn't put the Nichicon Muse FG's in the same conversation, though. We're talking power caps here and FG's are audio-signal caps. I'm not sure you can even find published info on ripple and ESR for those, as is typical for most audio-quality caps (unpublished specs are usually bad specs). The signal caps on the MOSFET-MAX should be the Elna RFS Silmic II"s (available at DigiKey). After trying many kinds on the MOSFET-MAX, those are every bit as good as Black Gates and magnitudes cheaper. Stay away from KZ's, too.
