Panasonic Su series capacitor

[Sensation45]

They were likely on E-bay because they were old. Last time buy in 2000. This type of capacitor can degrade if it sits unused for 20+ years. Not always, many times they are quite useable but you do take your chances. OEMs usually will NOT. I’ve bought plenty of old Panasonics and Nichicons surplus over the years and they have always worked. Even as old as 1979 - the only way I could get 470uF/50V axials. Still good as new. I’ve bought old Philips, CDE, and Illinois and had a mess of goo leaking out in the bin after a couple years and had to throw the entire lots out.

Even regular distributors will lower the price on old lots. I ran into 22000uF 50V Panasonics that were on the shelf for 6 years at Digikey, they marked them down accordingly, and I bought up a bunch. Nothin wrong with ‘em. Probably be 20 years before I use them all up, too. I do store all of my components at controlled temps - in the air conditioned portion of the shop rather than up in the rafters where it gets to be 110 or 120 in the summer.

Thank you very much, these Panasonic waters from the warehouse of an electronics company in the country I live in. My Esr meter is broken, I couldn't measure it. When I measure with the meter in capacitor mode, they have values between 205 225uf. No visible leaks for now.

 

[Sensation45]

2008 Panasonic Panasonics from the warehouse of the electronics company I mentioned in these

 

[dreamth]

Bought just an hour ago for 1 buck from a scrapeyard.Most caps are Panasonic SU, some are Panasonic " Pureism" whatever that means, some ste panasonic HFZ...I could bet tHE Pureism and SU csps have identical manufacturing process just bu the looks and size.
Let's not forget that in the 70's John Curl and Mati Ottala both signed a document telling that capacitors are bad for coupling audio signals ... Right or wrong...that ment that capacitor manufacturers had to rebrand all their usual capacitors "for audio" even if it was about mains filtering capacitors ...Thus a myth was born to fight another myth as Mohamed was invented to fight Jesus....
Simple truth is there's no special capacitor for audio and no amplifier better just because it's not using capacitors.There's not a single audio amplifier on Earth that doesn't make use of a single non audio capacitor.

 

[dreamth]

The funny thing is that these two boards come probably fom a a blue ray player having a pretty complex active filter with some green film foil caps marked Audio, lots of small black bipolar caps marked Pureism on one side of the pcb and 5 x njm4558 on the other

 

[Sensation45]

green film foil covers look very good.. They are exactly the material I was looking for, made in Japan.

 

[dreamth]

They are no better than the blue, brown, orange, white, yellow or red ones if it's the right type of capacitor for the job...ICC Illinois capacitors used in Tektronix and HP equipment were white...

 

[dreamth]

I have both bipolar Panasonic and bipolar nichicon muse 10uF/50V.The panasonic cap is about 8 times bigger than nichicon muse, its electrolite+ paper is visibly wet and cleatly heavier, while nichicon muse paper + electrolite looks almost dry.
They both measured fantastic in independent tests by Cyril Bateman and Neurochrome although they clearly use very different technologies.They might just have very different lifetime if stressed under heat.I have them both and I only preffer the Muse over the Panasonic when size matters or i just don't have enough nichicon caps.

 

[Sensation45]

I have both bipolar Panasonic and bipolar nichicon muse 10uF/50V.The panasonic cap is about 8 times bigger than nichicon muse, its electrolite+ paper is visibly wet and cleatly heavier, while nichicon muse paper + electrolite looks almost dry.
They both measured fantastic in independent tests by Cyril Bateman and Neurochrome although they clearly use very different technologies.They might just have very different lifetime if stressed under heat.I have them both and I only preffer the Muse over the Panasonic when size matters or i just don't have enough nichicon caps.

I have a few values nichicon muse green

 

[dreamth]

Next time try opa2132 or opa132 instead of the Bursons.You'll thank me later.

 

[Sensation45]

Next time try opa2132 or opa132 instead of the Bursons.You'll thank me later.

Thank you, I will try.. I have opa1656 from Ti, have you tried them?

 

[dreamth]

No.For 3 years I can only afford to buy components from scrapeyards.

 

[Sensation45]

I didn't give any money, I bought the Burson lara as a sample for the omps I bought from ti.

 

[Sensation45]

I got opa2134 opa1612 opa1656 as a sample

 

[dreamth]

I can't get samples from anybody.I wouldn't use Bursons even if I get them for free.I only need more opa2132

 

[dreamth]

The 33u/16v bipolar muse and the same values bipolar pureism panasonic caps are identical in size. Same are 100uF /16 Bipolar SU panasonic and 100uf /16v nichicon muse . The 10u/50Panasonic bp ce is definitely 2...3 times biger than the 10u/50 bp muse on the pcb.Not 8 times though...

 

[Sensation45]

Nice capacitors, I collect especially transistors from scraps

 

[dreamth]

I have litterally a ton of electronic components...

 

[wg_ski]

Especially if you count all the transformers.

 

[dreamth]

I do count the transformers, of course, but that's about 10% ...

 

[sp33ls]

I too enjoyed the OPA2132 over the Bursons in my WHAMMY. I actually ended up with a pair of OPA828 as my favorite.

I do count the transformers, of course, but that's about 10% ...

You need a pair of medical grade Triads? I've got a couple for sale.