Cornell-Dubilier Paper In Oil Capacitors

peter hawthorne · 19th March 2010, 11:01 AM

Hi all, I would be grateful if any one could let me know where I can purchase Cornell-Dubilier 10uf 1000vdc and 15uf 600vdc paper in oil capacitors. thank you regards peter.

TheGimp · 03:11 PM

Are you talking about NOS stock, or new manufactaurer capacitors?

The only ones I find on the CD web site that are oil filled are PP motor run types etc, not paper in oil.:

Oil-Filled & Motor Capacitors - Capacitors by Dielectric - CDE.com

The oil filled cap that comes closest to 1KV is the 660VAC Motor Run type. There are also some dc rated caps towards the bottom of the page.

You should be able to find these locally as Motor Run Caps, or possibly cheaper at the on line auctions.

peter hawthorne · 19th March 2010, 03:39 PM

Thank you for your reply. I have found a dealer here in the uk that stocks Cornell-Dubilier. The caps are oil filled dc paper film. These are new Cornell-Dubilier part numbers are T6W15NR-F and T10W10NR-F. Best Regards Peter.

TheGimp · 19th March 2010, 05:10 PM

Interesting cap, thanks for posting the pn.

jrenkin · 19th March 2010, 06:00 PM

Digi-key at $128 each? Ouch. I'll stick with surplus motor run caps.

EC8010 · 19th March 2010, 06:07 PM

Why does it need to be so specific?

indianajo · 19th March 2010, 08:27 PM

I put some plastic film insulated oil filled motor caps in my tube organ instead of electrolytic. 50 uf 440 vAC 1000 VDC was $15. Rated to pretty high horsepower motor-very low esr. Genelec brand, stocked at Farnell/Newark. Unless you're into RF, there won't be much difference between paper and plastic except the plastic will last longer.

TheGimp · 19th March 2010, 08:37 PM

Those "Type T" caps are honkers!

Rated for heavy duty pulse ratings for radar and such.

I'm sure they are fine caps, but standard motor run caps (metalized PP) should serve as well in an audio amp.

Maybe he is building a pulse LASER?

peter hawthorne · 20th March 2010, 08:43 AM

Hi All. The Cornell-Dubilier T caps are for a Western Electric 91A amplifier. I have made two of these amps using military paper in oil and one with pp motor run caps. To me the paper in oil sound better. The spec of the T caps on Cornell- Dubilier web site reads that they are paper foil. Thanks for your replies. Regards Peter.

19th March 2010, 11:01 AM	#1
peter hawthorne diyAudio Member Join Date: Aug 2007	Cornell-Dubilier Paper In Oil Capacitors Hi all, I would be grateful if any one could let me know where I can purchase Cornell-Dubilier 10uf 1000vdc and 15uf 600vdc paper in oil capacitors. thank you regards peter.

19th March 2010, 02:47 PM	#2
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	Are you talking about NOS stock, or new manufactaurer capacitors? The only ones I find on the CD web site that are oil filled are PP motor run types etc, not paper in oil.: Oil-Filled & Motor Capacitors - Capacitors by Dielectric - CDE.com The oil filled cap that comes closest to 1KV is the 660VAC Motor Run type. There are also some dc rated caps towards the bottom of the page. You should be able to find these locally as Motor Run Caps, or possibly cheaper at the on line auctions. Last edited by TheGimp; 19th March 2010 at 03:11 PM.

19th March 2010, 03:39 PM	#3
peter hawthorne diyAudio Member Join Date: Aug 2007	Capacitors Thank you for your reply. I have found a dealer here in the uk that stocks Cornell-Dubilier. The caps are oil filled dc paper film. These are new Cornell-Dubilier part numbers are T6W15NR-F and T10W10NR-F. Best Regards Peter.

19th March 2010, 06:07 PM	#6
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Why does it need to be so specific? __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

19th March 2010, 08:27 PM	#7
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	film vs paper I put some plastic film insulated oil filled motor caps in my tube organ instead of electrolytic. 50 uf 440 vAC 1000 VDC was $15. Rated to pretty high horsepower motor-very low esr. Genelec brand, stocked at Farnell/Newark. Unless you're into RF, there won't be much difference between paper and plastic except the plastic will last longer. __________________ Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,SP2-XT's, T-300 HF Projs, Steinway console, Herald RA88a mixer, Wurlitzer 4500

19th March 2010, 05:10 PM	#4
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	Interesting cap, thanks for posting the pn.

19th March 2010, 06:00 PM	#5
jrenkin diyAudio Member Join Date: Nov 2007 Location: Denver, Colorado	Digi-key at $128 each? Ouch. I'll stick with surplus motor run caps.

19th March 2010, 08:37 PM	#8
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	Those "Type T" caps are honkers! Rated for heavy duty pulse ratings for radar and such. I'm sure they are fine caps, but standard motor run caps (metalized PP) should serve as well in an audio amp. Maybe he is building a pulse LASER?

20th March 2010, 08:43 AM	#9
peter hawthorne diyAudio Member Join Date: Aug 2007	Capacitors Hi All. The Cornell-Dubilier T caps are for a Western Electric 91A amplifier. I have made two of these amps using military paper in oil and one with pp motor run caps. To me the paper in oil sound better. The spec of the T caps on Cornell- Dubilier web site reads that they are paper foil. Thanks for your replies. Regards Peter.

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