[SI-LIST] Re: planer capacitors

Hi Bill,

The reason is that there is almost no inductance with planer caps,
besides the discrete may have large. As you know, discrete caps behave
inductor rather than capacitor @ high frequency, so that impedance curve
is shown as "V" shape. You can only get effect at the bottom of "V".

Regards,

On Fri, 9 Aug 2002 10:38:57 -0700
"Bill Mueller" <williamm@xxxxxxx> wrote:

> Hello All,
> 
> I've been doing digital design guides for a little over a year now,
> and was interested in a little more explanation on why planer
> capacitors are more effective at higher frequencies than discrete
> caps.
> 
> Also, if you have a fairly large stack up (10+ layers) with several
> possible planer caps are there any additional considerations to be
> made?
> 
> Thanks,
> Bill
> 
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Tadashi Arai//Platform Developing Dept.,Desktop Prd Div. Fujitsu Limited
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