[R-390] capacitors and suppliers
David Wise
David_Wise at Phoenix.com
Thu May 29 18:25:32 EDT 2014
Searching at Mouser, I took a representative value, 0.01uF, 630VDC-2KVDC, stocked only, and added "foil" to the search string. This produced a couple of Wima FKP1 parts. Changing "foil" to "FKP" yielded nine FKP1 and FKP4 parts, ranging from $0.76 to 2.69 . The datasheets say they are film/foil. If you are willing to go down to 400V, you can add one FKS2 part for $0.47 .
If you are 100% allergic to metallization, pass by the FKP4; they are foil/metalized film/foil/film. That still leaves over half a dozen 0.01's.
Here are three more film/foil types that don't show up in the above search.
CDE type DMT
CDE type DPP
CDE type WMF
That last is even axial-lead, for you radial-haters. All in stock, and nothing over about $3.
FWIW,
Dave Wise
PS - I left out Sprague type 715P since it is said to be on the way out, but they're still in stock. About 1000 715P 600V, less than $3. Casting a wider net, I see that some values are EOL status but not others.
-----Original Message-----
From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Dave and Sharon Maples
Sent: Thursday, May 29, 2014 2:15 PM
To: 'rbethman'; '390 list'
Subject: Re: [R-390] capacitors and suppliers
All: The note from Charles seems sound to me. On the R-390A I did, I went
the all-OD route and regretted it almost instantly. I had the experiences
that he cited. Never had the courage to go into the RF deck, so mine is
still "incomplete" I guess.
The only places that seem to sell real film-and-foil caps, though, are some
rather esoteric hi-fi places. If there are better sources, I'm all eyes.
When I check manufacturer's websites (e.g. Vishay) I don't seem to find the
real film-and-foil caps still being manufactured as a product line. I will
freely admit that my search has not been exhaustive.
Thanks,
Dave, WB4FURb
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