Voltage rating of SMD capactor

Thread Starter

pedro147

Joined Jan 1, 2013
52
Sorry second and last question for the day :oops: and typo in title

I am building a Atmeg32u4 based quadcopter flight control board and the design calls for some 2.2nF 0603 ceramic capacitors rated at 16v I cannot source these locally but I can source the same thing but rated at 50v

If I were to substitute the higher voltage caps could this lead to any problems in the circuits operation please. My feeling is no but I prefer to ask someone much more knowledgeable.

Thanks Pedro
 

RichardO

Joined May 4, 2013
2,271
I would be wary of the higher voltage cap. Make sure that the dielectric is _not_ Y5U. The Y5U material is very temperature sensitive causing the capacitance to drop to almost nothing at temperature extremes.
 

Thread Starter

pedro147

Joined Jan 1, 2013
52
Thanks RicharO.

This seemingly simple scenario has other more complex things to consider apparently :)

I will look into the material that the cap is made from first and be aware of this situation of capacitance variation with temperature rise.
 
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