Pioneer SX-450 - Nippon CELL caps

[gdement]

I'm putting together a list of replacement caps for an old Pioneer SX-450 amplifier (late 70's model). Most of the originals are general purpose Korea Chemicon SL series. However, I found a couple in there which stand out.

They're marked as Nippon Chemicon CELL, but I can't find any info anywhere about what a "CELL" cap is. I looked on Nippon Chemicon's list of modern substitutes for old series, and that one isn't even listed.

I'm guessing these are an old low ESR series. They used general purpose everywhere except for these guys, so I guess these locations are important.
Based on availability at digikey, I'll probably replace them with either Panasonic FC or Nichicon PW, same as I've been selecting for everything else.

Is there anything special about Nippon "CELL" caps that I should be aware of? I'm asking too late really, but I'd still be interested if anybody knows anything about them.

[kc8adu]

Re: Pioneer SX-450 - Nippon CELL caps

iirc they were a low leakage series.

[dood]

Re: Pioneer SX-450 - Nippon CELL caps

gdement- I'd be interested in seeing that list when you're done with it... I've been considering recapping my SX-450, and I'd be curious to see if we've got the same caps.

[PCBONEZ]

Re: Pioneer SX-450 - Nippon CELL caps

I think that is not "CELL".
I think it is "CE" and "LL".
CE used to be there to say what the sleeves are made of (Like "PET" on some caps.)
LL is an old series of Nippon caps.
Low Leakage type too as kc8adu said.
http://www.chemi-con.co.jp/english/c.../daigae_e.html

.

[gdement]

Re: Pioneer SX-450 - Nippon CELL caps

OK, this makes more sense now, thanks for the responses. I guess these are "LL" series. Thanks to that info, I've made a correction.

Nippon recommends KY series to replace the LL's. There's no KY at 47uF 35v, but looking at the leakage specs tells me that the PW's I was planning to get are wrong. So I've switched them to Panasonic FC, which matches the KY leakage spec.