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Matsushita Oil Capacitor

75.90.22.105

Posted on November 5, 2012 at 09:31:02
mporter53
Audiophile

Posts: 44
Joined: August 23, 2002



Does anyone know anything about these capacitors(picture attached)? It says oil on them but it seems too small to be a paper and oil capacitor. I have two .047 and two .022 and was going to use them in my Fisher 400. Appreciate any help.

 

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RE: Matsushita Oil Capacitor, posted on November 5, 2012 at 10:16:32
6bq5
Audiophile

Posts: 949
Location: SF Bay
Joined: August 16, 2001
Contributor
  Since:
September 14, 2012
It may be that it is suitable for a location in/around oil - as opposed to being constructed with oil.
Industrial labels are funny that way - Explosion Proof enclosures are designed to CONTAIN the explosion that may result, not survive if an explosion happens outside the enclosure...

Happy Listening

 

Question, posted on November 5, 2012 at 13:25:52
unclestu
Dealer

Posts: 4194
Joined: April 13, 2010
Is that a ceramic body? Can't really see too well but it appears that there is some sort of a seal at the ends, or is that simply a solder blob?

FYI I have some Japanese caps, somewhere, which have a ceramic body and are physically small and have small uF values. A long time ago they had the reputation of leaking, so I never tried them. They had white ceramic bodies with blue print, and look similar the ones you pictured, although they were not labeled Matsushita.

Stu

 

RE: Matsushita Oil Capacitor, posted on November 5, 2012 at 16:56:35
Brian Levy
Audiophile

Posts: 1874
Location: Toronto
Joined: June 5, 2000
I just bought 4 2mfd 600 wvdc oil caps to use in my speaker crossovers that need 4mfd. When I got them, they were really small and I suspected possibly fakes but had them checked and they are from 1.8-2.0 mfd each and wit a little research traced the back to their original manufacturer as being US made for military equipment and industrial instruments in harsh environments and hence terminated in a rather unusual manner. In combination they'll occupy about a third of the space of the original 4mfd 200vdc oil cans. Only a little larger than the 4mfd polys I had originally used by found unsatisfactory.
Don Brian Levy, J.D.
Toronto ON Canada

 

Found my caps, posted on November 5, 2012 at 21:40:23
unclestu
Dealer

Posts: 4194
Joined: April 13, 2010
They are labeled Argonne have the descriptor JCP-TNN-R blue print on white ceramic 600 VDC rating and the outer foil side to the right of the printing. The cap is .o5 uF rating.

Interesting.

Stu

 

don't use them!, posted on November 8, 2012 at 09:39:41
Joe Roberts
Manufacturer

Posts: 225
Location: Virginia
Joined: January 25, 2004
These old Japanese oil caps are extremely dubious with DC voltage across them. Most of them that I have seen in equipment are quite leaky and will throw stage bias way off.

Use Russian surplus if you want a reliable oil cap.
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Free your mind and your ass will follow -- Parliament/Funkadelic

 

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