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Old 03-04-2016, 11:12 PM   #1861
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Default Re: best cheap/free scores 1.1

I *think* that was a claim made by stj (but please excuse me if I got it wrong). Don't ask me what thread, though, because I can't remember even if my life depended on it.
He said that Panasonic FC leak as they age and Rubycon ZL go out of spec in terms of capacitance.

Actually, speaking of this, I just noticed yesterday that I had some small Nichicon PM 5x11 mm caps leaking a little from both leads (green, puffy corrosion near the bung). So far, it only seems to be a bag of eight 16 V 100 uF caps only. I bought them back in 2010 or 2011 (or possibly early 2012) and used only a few, I think. Hopefully, this is just an isolated case with those caps and not a whole series problem. PM is supposed to be a replacement series for PL, so I wonder if they still have those quaternary ammonium salts problems. Meanwhile, it seems that my various bags of Nichicon PS caps (bought at same time as PM above) seem to be okay. PS is supposedly a replacement series for PR.
Datecodes on the PMs? Modern electrolytics don't use the quaternary ammonium salts anymore excepting double layer electrolytics. Chemi-con issued a noticed on the matter in 2003 (attached) expressly stating that none of their electrolytics use that solution. That being said, I doubt that's the only ammonium salt system that has that problem in electrolytics, just the only one that we know of that does...
Attached Files
File Type: pdf ncc_umwelt-ammoniumsalze-03.pdf (55.5 KB, 16 views)

Last edited by Wester547; 03-04-2016 at 11:47 PM..
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