Ripple current rating of ceramic capacitors for SMPS use?

[treez]

Hello,
I was reading an article on this the other day, off the web, but can't find it now, does any reader know where to find such?
It had a rough table giving the ceramic capacitor case size (eg 1206, 1210, 1812) and the approx. allowable ripple current at 100KHz.
Does anyone know where to find this?

 

[malli_1729]

not sure about the particular app note. What actually you want to know about ripple current of ceramic's

 

[treez]

typical maximum allowable ripple current at 100KHz for eg 1206 size ceramics, 1210 size ceramics, 1812 size ceramics, etc

The table I looked at the other day said it was 0.5A for 1206, but I can't remember what it said about the others.

 

[malli_1729]

Here, i have a table having ripple values listed with exact part numbers which i collected for one our design.
Good FAQ's and appnotes are there in murata website and TDK.

As like any element, capacitor will have a thermal constant (tells for how much power dissipation how much is the temperature rise). Power dissipation mainly depends on ESR. heat transferred outside to world depends on package parameters......

Generalising things is difficult.....