Amps
[Top] [All Lists]

[AMPS] Re: Need info on mica caps

To: <amps@contesting.com>
Subject: [AMPS] Re: Need info on mica caps
From: W8JI@contesting.com (Tom Rauch)
Date: Tue, 6 Jul 1999 11:59:03 -0400
> >Just as a ball park reference, in my hand is a 258 pF 8KV 7A @ 3mHz. It
> >measures 3X3X2 1/4 inches.
> >
> ?  As I understand it, the current handling ability of mica caps 
> decreases above 3MHz.  

> Rich...

Not according to the data I see in about a half dozen places. Many 
mica capacitors continue to increase in current with frequency, 
depending on the style of construction and value, way up into VHF.

Multi-layer micas are a very common high current  VHF capacitors.

Mica does not become a poor dielectric at 3 GHz, let alone 3 MHz. 
Especially Ruby Mica, which is used in some of the lowest ESR 
capacitors available for microwave.
73, Tom W8JI
w8ji@contesting.com

--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm


<Prev in Thread] Current Thread [Next in Thread>