Cap Selection - Technologies

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  • C152Heavy
    Senior Member
    • May 2014
    • 66
    • CA

    #1

    Cap Selection - Technologies

    Looking for some advice tonight.

    I have a motherboard with a bunch of 47u@16V SMT caps and first instinct is to use a typical aluminum cap like this:

    http://www.digikey.com/product-detai...8-1-ND/3963150

    The discussionon the Mac forum suggests looking at some "solid" caps like tantalum or ceramic or "polymer" because the better OEMs are doing that now....

    Any thoughts from some cap experts here?

    Tks.

    D


    EDIT: Pkg size; looks like about 0.35" across the tabs and no plastic base like today's caps.
    Last edited by C152Heavy; 01-31-2017, 07:05 PM.
  • Behemot
    Badcaps Legend
    • Dec 2009
    • 4845
    • CZ

    #2
    Re: Cap Selection - Technologies

    Any markings? What board is it? Anyway, these are usually general purpose caps of not too good quality.
    Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

    Exclusive caps, meters and more!
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    • C152Heavy
      Senior Member
      • May 2014
      • 66
      • CA

      #3
      Re: Cap Selection - Technologies

      Originally posted by Behemot
      Any markings? What board is it? Anyway, these are usually general purpose caps of not too good quality.
      Thanks for responding!

      Markings? Just capacitance & voltage.

      There are a couple of larger (size) axials, they're Nichicon, 470u@16V.

      The board is the motherboard of a Mac IIci, the SMT caps are leaking now after about 25 years. I don't expect the "modern" replacements to last that long.

      D

      Comment

      • Behemot
        Badcaps Legend
        • Dec 2009
        • 4845
        • CZ

        #4
        Re: Cap Selection - Technologies

        Being that old it will be certainly GP. You can use THT caps, just cut the leads and bend them.
        Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

        Exclusive caps, meters and more!
        Hardware Insights - power supply reviews and more!

        Comment

        • C152Heavy
          Senior Member
          • May 2014
          • 66
          • CA

          #5
          Re: Cap Selection - Technologies

          Originally posted by Behemot
          Being that old it will be certainly GP. You can use THT caps, just cut the leads and bend them.
          GP??

          D

          Comment

          • Behemot
            Badcaps Legend
            • Dec 2009
            • 4845
            • CZ

            #6
            Re: Cap Selection - Technologies

            general purpose, standard
            Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

            Exclusive caps, meters and more!
            Hardware Insights - power supply reviews and more!

            Comment

            • C152Heavy
              Senior Member
              • May 2014
              • 66
              • CA

              #7
              Re: Cap Selection - Technologies

              Originally posted by Behemot
              general purpose, standard
              OK, thanks.

              Should have some SMT Nichi replacements from Digikey tomorrow.

              D

              Comment

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