Is there a general self resonance frequency characteristics for MLCC capacitors? If I make a RC low pass filter, say using 1kohm and 15nF 0603 with fc = 10.6kHz, I guess it won't work as LPF beyond the self resonance frequency of capacitor. I couldn't find the self resonance frequency characteristics for capacitor (C0603C153F3GACTU) in its datasheet. Is there a general estimation? I am interested to know the frequency response of the filter for around 100-200 MHz.
MLCC devices in surface mount packages all have a self-inductance (as indeed does anything carrying current).
The typical values for some common case sizes:
0402 : about 700pH
0603 : about 900pH
0805 : about 1.1nF
1206 : about 1.4nH
I am also using reverse geometry devices, specifically 0204 and 0306 with self inductances of about 280pH and 350pH respectively.
These are approximations as the effective inductance is determined by the specifics of the actual sizes of the internal plates (which varies across manufacturers).
You can calculate the SRF using the standard series resonance formula and this should be within about 5% (because the self resonance variation is the square root of the LC variation).
[Update: Added calculated SRF and impedance plot]
The part above would be self-resonant at about 43MHz, and here is the plot of Z vs. F:
I'd say that capacitor was unsuitable for your requirements. The Kemet spec says: -
Extremely low ESR and ESL
But fails to state what they are and of course you need the ESL to calculate the SRF.
Kemet also say this: -
Preferred capacitance solution at line frequencies and into the MHz range
How many MHz they mean is unclear but if you expect performance at 100-200 MHz you might be disappointed.
I've just taken a look at some data sheets from AVX and they do quote SRF (in graphical form) but the problem with these is that for anything higher than about 1nF, the SRF is going to be about 100 MHz - my advice is parallel up a 15nF with a 100pF - the 100pF will have a much higher SRF and the combination of both is likely to yield the result you need but not without a bit of digging around.