Prompted by a few very helpful comments here on the reflector, I asked CDE
about the rf current ratings of some of their dipped mica caps. Here is
their response, which I hope is useful to others.
73,
Tony, N2UN
> [Original Message]
> From: Robert Sevigny <rsevigny@cde.com>
> To: <tjjapha@earthlink.net>
> Date: 12/5/2006 1:38:34 PM
> Subject: Re: current ratings
>
> Tony,
>
> Based on a 15°C rise in an 85°C ambient typical current ratings at 5 MHz
and
> up would be:
>
> CD15/500Vdc 100 pF .29 Amps
> CD15/500Vdc 470 pF 1.0 Amp
>
> CD19/500Vdc 1000 pF 2.1 Amp
> CD19/500Vdc 4700 pF 5.4 Amp
>
> CDV19/1000Vdc 100 pF .95 Amp
> CDV19/1000Vdc 1000 pF 3.0 Amp
> CDV19/1000Vdc 4700pF 6.5 Amp
>
> Bob Sevigny
> Senior Product Engineer
> Cornell Dubilier
> ----- Original Message -----
> From: "ANTHONY JAPHA" <tjjapha@earthlink.net>
> To: <rsevigny@cde.com>
> Sent: Monday, December 04, 2006 7:49 PM
> Subject: current ratings
>
>
> > Hi.
> > I'm using your CD15 and CD19 dipped micas in low pass filters to be
used
> > in
> > a 600 watt amplifier from 1.8 to 30 Mhz. What I'd like to know is if
> > their
> > are current rating considerations that need to be considered. I'm using
> > several 500 or 1000 volt capacitors in parallel, and believe that the
> > voltage ratings are sufficient. But what about current? The r.f.
current
> > may exceed 5A.
> >
> > Thank you very much.
> >
> > Tony Japha
> >
> > The information contained in this email message may be privileged,
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strictly
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>
> The information contained in this email message may be privileged,
confidential and protected from disclosure. If you are not the intended
recipient, any review, dissemination, distribution or copying is strictly
prohibited. If you have received this email message in error, please notify
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