# capacitor size vs frequency

Discussion in 'General Electronics Chat' started by ADI89, Aug 13, 2013.

Aug 13, 2013
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How does the size of capacitor depend upon the frequency?

Jul 18, 2013
10,851
2,523
By size do you mean value?
Look into the effect of capacitive reactance.
You might also want to study tuned circuits.
Max.

3. ### wmodavis Well-Known Member

Oct 23, 2010
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The frequency of capacitor size depends on the size of the capacitor and the frequency of the size of the capacitor and may be resonant due to any near by inductors irrespective of its size.

4. ### Papabravo Expert

Feb 24, 2006
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1,850
If you mean the physical size -- it doesn't.
The working voltage has a major effect because it dictates the thickness and composition of the dielectric. It is also difficult to get a large capacitance in a small volume. So capacitance and working voltage go hand in hand so to speak.

As you increase the frequency the reactance goes down for a given value of capacitance.

5. ### MrChips Moderator

Oct 2, 2009
12,636
3,454
This is such a vague question that there is no possible correct answer.
You have to elaborate on what you mean to say.

6. ### snowdrifter Member

Aug 13, 2013
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Gotta be more specific. What will you be using this for? What sort of frequencies are we talking about?