Maximum voltage of ceramic disc caps

Discussion in 'General Electronics Chat' started by atferrari, Dec 2, 2012.

  1. atferrari

    Thread Starter AAC Fanatic!

    Jan 6, 2004
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    I need several .1 uF disc caps to filter voltages around 33V.

    From all I got, I found two, explicitly marked 50V. The rest is like those in the picture. The green one has 7 mm diam and it is some 3 mm thick, maximum. The other is 5 mm diam and less than 2 mm thick.

    Any chances they are suitable?

    Cannot smoke-test them. The sole available supply with 33V is the one being built.
     
  2. takao21203

    Distinguished Member

    Apr 28, 2012
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    you can test with a small resistor
     
  3. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    If they are rated for 50V and the peak voltage does not exceed 50V then they should be suitable. We used ceramic capacitors well above their voltage rating without damaging them.

    As for all the others, 50V is kind of one of the lowest very common values I've seen. Chances are good they can be used.
     
  4. takao21203

    Distinguished Member

    Apr 28, 2012
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    It depends on the material.

    It could be multilayer, or high capacitive single layer.

    I don't think the small 100n cap is good for 50v.
     
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