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Substituting a 6.3v in place of a 10v cap?

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    #1

    Substituting a 6.3v in place of a 10v cap?

    I have a friend with a computer mainboard, with a blown 10v 3300uf. I know that it's ok to go up in voltage, but you should usually not go down. However, mainboards only have 3 voltages - 3, 5, and 12, right? So I'm thinking that the 10v has to be used for either a 3 or 5 volt line, and 6.3v cap will work fine..I have some 6.3v 3300uf on hand is why I am wanting to do this.

    Am I flawed in my thoughts about this?
    Last edited by waynewrk; 10-18-2010, 11:17 AM.
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    #2
    Re: Substituting a 6.3v in place of a 10v cap?

    Originally posted by waynewrk View Post
    So I'm thinking that the 10v has to be used for either a 3 or 5 volt line, and 6.3v cap will work fine..I have some 6.3v 3300uf on hand is why I am wanting to do this.
    Some caps are marked with a (M) code which I believe means +/- 20% rating. So if it is a 5V cap with a +/- 20% reading, then that cap could be as high as 6V.

    So 6.3V, in theory, would work.
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      #3
      Re: Substituting a 6.3v in place of a 10v cap?

      The +/-20% -ONLY- applies to the uF.

      Yes, on a mobo 6.3v and 10v are interchangeable.

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        #4
        Re: Substituting a 6.3v in place of a 10v cap?

        Originally posted by PCBONEZ View Post
        The +/-20% -ONLY- applies to the uF.
        Arrgh, of course, that what I was thinking, but totally f****d up in posting a reply! Sigh.
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