[Amps] Blue Disc Ceramic caps ??

[Carl]

Most of the blue ones Ive seen are Chinese and many reports are they fail at 
RF...at least at QRO.

Carl
KM1H


----- Original Message ----- 
From: "Rob Atkinson" <ranchorobbo at gmail.com>
To: "Larry Benko" <xxw0qe at comcast.net>
Cc: <amps at contesting.com>
Sent: Friday, August 17, 2012 6:25 AM
Subject: Re: [Amps] Blue Disc Ceramic caps ??


> v. rating is only part of it; I think Hank is probably wanting to know
> if they are class 2 and what the dielectric temp. code is.   Choose
> caps for RF carefully.
>
>
> rob
> k5uj
>
> On Thu, Aug 16, 2012 at 11:01 PM, Larry Benko <xxw0qe at comcast.net> wrote:
>> Hank,
>>
>> Look at TDK CC45 capacitors.  Available at Mouser with number
>> 810-CC45xxxxxxxx.  They are about $.15 in 1k quantities.  The data sheet
>> specifically says "low dissipation at high frequency".  They are rate at
>> 6kVDC.  I have tried*unsuccessfully* to blow them up at HF with no DC
>> and RF voltages of 2kVpk.  However the ones I was testing were 10pF,
>> 22pF, and 47pF so the current would be much lower than the higher
>> capacitance ones.
>>
>> Larry, W0QE
>>
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