Voltage rating of SMD capactor

Discussion in 'General Electronics Chat' started by pedro147, Jan 26, 2016.

  1. pedro147

    Thread Starter Member

    Jan 1, 2013
    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
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    Higher voltage rating will be ok.
    Roderick Young likes this.
  3. pedro147

    Thread Starter Member

    Jan 1, 2013
    Thank you kubeek

    I thought so but best to check :)

    Last edited by a moderator: Jan 26, 2016
  4. RichardO

    Well-Known Member

    May 4, 2013
    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.
  5. pedro147

    Thread Starter Member

    Jan 1, 2013
    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.