Re: gEDA-user: ESR of 2.2u ceramic capacitor

[Bill Sloman <bill.sloman@xxxxxxxxx>]

At 18:59 22-2-2006, you wrote:
> Hello
>
> Does anyone has experience how much ESR a modern 2.2u ceramic capacitor
> can have? Less than 200mOhm?

The manufacturers might. Google is your friend

http://www.low-esr.com/esrfreqperfcurves.html-ssi#NMC2R2

For that particular capacitor, ESR is claimed to decrease with 
frequency. from about 1.5R at 1kHz to about 0.01R at 100kHz.

National Semiconductor might appear to think differently - they 
figure on 5 milliohm, but in a discussion about stability, where the 
system oscillate at about 6MHz

http://www.national.com/nationaledge/jul02/article2.html

--
Bill Sloman, Nijmegen