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    #1

    Nichicon/FPCAP?

    Hi,

    Mouser has been stocking a crapload of these and I was wondering what the lowdown was. According to the Datasheet from Nichicon, FPCAP is technically electrolytic, but it says polymer...And is it Fujitsu or Nichicon?

    So if one was to do a poly-mod on a board, I would figure that finding the correct value might be difficult because it's kind of the ugly child of an electrolytic and a solid polymer...

    Am I better off sticking to the UCCs and regular Nichicons?

    Thanks.
    Tags: None
    #2
    Re: Nichicon/FPCAP?

    http://www.nichicon.co.jp/english/pr...p_catalog.html

    FPCAP used to be fujitsu (the yellow ones with K vent, later looking like regular polys with red markings like on that site), but was bought by nichicon AFAIK

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      #3
      Re: Nichicon/FPCAP?

      If the Nichicon FPCAP is anything like the Fujitsus, then they are reported to be generally superior to other polymer caps. This piques my interest a bit. I'm very happy with the stock of Nichicon at Mouser, and I will have to investigate these caps there for future use.

      edit:

      It seems from here that F8, NE and E5 are suitable for Low ESR applications.
      Last edited by mockingbird; 03-09-2011, 06:49 PM.
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      -Leonid Brezhnev (On the Yom Kippur War)

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        #4
        Re: Nichicon/FPCAP?

        The old ones with vents were the wet polymer variety similar to OS-CONs, but they haven't made those in a while. The new ones are all solid like everyone else.

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          #5
          Re: Nichicon/FPCAP?

          So is there a reason they put "electrolytic" on the datasheet? I actually didn't see any mention of a wet electrolyte in the diagram, but perhaps?

          Comment

            #6
            Re: Nichicon/FPCAP?

            "electrolytic" doesn't necessarily imply that it's a wet capacitor. Here's a diagram from Sanyo that explains the terminology.

            There were caps that had wet organic polymer electrolyte like 10 years ago, but that's gone by the wayside.

            Comment

              #7
              Re: Nichicon/FPCAP?

              There are several discussions of the Fujitsu-Nichicon deal in the forums over the past 2 years. Notably:

              https://www.badcaps.net/forum/showthread.php?t=6524

              FYI - Some of the FPCAP datasheets from Nichicon are dupes of the Fujitsu ones.
              Last edited by Toasty; 03-10-2011, 01:31 AM.
              veritas odium parit

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                #8
                Re: Nichicon/FPCAP?

                Ah I just implied that electrolytic = wet. Well, I think I might try some of these somewhere down the line...They are actually cheaper than most polymers which is also strange.

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                  #9
                  Re: Nichicon/FPCAP?

                  the black and yellow fujitsu polys with vents are the same tech as any other polys.nichicon bought the fpcap line and name.i have heard it through the grapevine they are still made in the same factory by the same workers.

                  Comment

                    #10
                    Re: Nichicon/FPCAP?

                    Kind of irrelevant, and I know most of you guys aren't Audio Gurus, but do you have any idea how polymers behave in chip amplifiers, versus standard electrolytics?

                    Comment

                      #11
                      Re: Nichicon/FPCAP?

                      FPCAP = Functional Polymer Capacitor
                      (Fujitsu initially called them "Hybrid" in ads.)

                      As I recall someone tore one apart a long while back and they aren't "Solid" [as in dry].
                      Had some kind of paste instead of a liquid.

                      So my take is they are called "Functional" because they are somewhere between "Solid" and "Wet".

                      Regardless, they work as well as and other Polymer cap.
                      .

                      Early on they had a problem with moisture leaking -IN- through the bung and causing [usually slight] bloating when they heated up again.
                      Fujitsu fixed that problem many moons ago [guessing 2002-ish +/-1] but that's why the first design versions had vents.
                      .
                      Last edited by PCBONEZ; 03-11-2011, 01:47 AM.
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