RE: [SI-LIST] : Capacitor dielectric type

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From: Larry Miller (ldmiller@nortelnetworks.com)
Date: Fri Nov 17 2000 - 08:11:19 PST


I never heard of any problems mixing. They are just different temperature
specs and tolerances. However, are you using through-hole disc caps? Your
choice of values sounds like you need surface-mount units.

Larry Miller

> -----Original Message-----
> From: Tae-Kwang Jeon [SMTP:tkjeon@vps6.lsil.com]
> Sent: Thursday, November 16, 2000 3:47 PM
> To: si-list@silab.eng.sun.com
> Subject: [SI-LIST] : Capacitor dielectric type
>
> Hello,
>
> I'm trying to put multiple decoupling capacitos on my board mixing small
> and
> large values in order to minimize the ESL and ESR.
> What I'm wondering is when I use different types of dielectic for the
> capacitors. For instance, I'm going to use 0.022uF X7R type and 470pF of
> NPO type because NPO has the lowest ESR.
>
> Does anybody know whether or not it's not a big deal in terms of mixed
> dielectric material for high frequency decoupling?
>
> Thanks,
> TK
>
>
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