Amps
[Top] [All Lists]

[AMPS] Murata capacitors

To: <amps@contesting.com>
Subject: [AMPS] Murata capacitors
From: johnf@futurenet.co.za (John Fielding)
Date: Fri, 2 Jul 1999 18:16:35 +0200
> 
> OK I have now had a chance to peruse my extensive library at work.
> 
> From the Murata/Erie catalog 84/85 which detail these caps.  The 105A is a 
> date/batch
> code marking and has nothing to do with the actual capacitor ratings.
> 
> Incidentally  some of these caps do have Imperial threads and not metric as 
> one would
> expect.  Rather obvious when you think of it as they are "duplicates" of the 
> original
> Erie parts.  
> 
> For your info:        typesDHSxx series have 8-32 NC-2B threads and the 
> remainder have metric
> threads.  However the DHS series are not quoted as suitable for RF 
> applications, rather
> they are intended for DC PSU filtering/strorage applications.
> 
> The RF types are the DCT & DAT series and, for example, the DCT version with 
> 1000pf @
> 30kV peak RF voltage and 20KV are rated at 300KVA at 50C and 200KVA at 70C so 
> should be
> more than adequate for amateur amplifiers!
> 
> Another version is the DC500 series which are a little smaller in size and 
> these are
> often used as padders in tank circuits.  A 500pf version @ 15kV is rated at 
> 14KVA @
1MHz, > 5.9KVA @ 10MHz and 5.4KVA @ 30MHz. (KVA is approx. equal to KW at lowish
frequencies)
> 
> Hope this sorts out the previous queries.
> 
John    ZS5JF

--
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>
  • [AMPS] Murata capacitors, John Fielding <=