Rubycon BXA genuine or not?

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  • kazzek
    New Member
    • Feb 2020
    • 9
    • US

    #1

    Rubycon BXA genuine or not?

    I've been looking around for capacitors to replace in a power supply circuits in an audio equipment. These came from China. These are axial and Rubycon.com doesn't have any info about axial BXA type.

    Genuine or fake?
    Thx!
    Attached Files
    Last edited by kazzek; 03-14-2020, 07:30 PM.
  • eccerr0r
    Solder Sloth
    • Nov 2012
    • 8684
    • USA

    #2
    Re: Are these for real??

    wow... probably fake... they should be radial and high voltage. But if the capacitance checks out and doesn't blow up at 25V, at line frequencies it's probably not a big deal.

    Comment

    • R_J
      Badcaps Legend
      • Jun 2012
      • 9534
      • Canada

      #3
      Re: Rubycon BXA genuine or not?

      I don't see any 25v caps in that series, the BXA seem to be 160v~450v, but let me guess... they were cheap.

      Comment

      • kazzek
        New Member
        • Feb 2020
        • 9
        • US

        #4
        Re: Rubycon BXA genuine or not?

        Thanks, so you are saying these are counterfeit capacitors, right? attached is the photo of the one that needs to be replaced.
        Attached Files
        Last edited by kazzek; 03-14-2020, 11:16 PM.

        Comment

        • stj
          Great Sage 齊天大聖
          • Dec 2009
          • 30953
          • Albion

          #5
          Re: Rubycon BXA genuine or not?

          show the other side of the original please.

          Comment

          • R_J
            Badcaps Legend
            • Jun 2012
            • 9534
            • Canada

            #6
            Re: Rubycon BXA genuine or not?

            Digikey carries Illinois Capacitor, 10,000µf/25v and 35v Axial lead. I doubt its a smps so these should work ok.

            Comment

            • kazzek
              New Member
              • Feb 2020
              • 9
              • US

              #7
              Re: Rubycon BXA genuine or not?

              Thanks for getting back to me. Have exactly the same dimensions and look the same with an exception of a small hole which can be seen in the third photo. The original ones do not have series info printed on the side and I think they were rated 85C.
              Attached Files
              Last edited by kazzek; 03-15-2020, 01:11 PM.

              Comment

              • RJARRRPCGP
                Badcaps Legend
                • Jul 2004
                • 6301
                • USA

                #8
                Re: Rubycon BXA genuine or not?

                Bung looks highly suspicious!
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                Comment

                • Hitto
                  Senior Member
                  • Apr 2019
                  • 95
                  • Italy

                  #9
                  Re: Rubycon BXA genuine or not?

                  Rubycon BXA are for LED and inverters and they are radial, not axial. They are made for circuits with high frequencies and starts at 160V like written by R_J.

                  I suspect that the ones bought from you were not genuine ones.

                  Comment

                  • Uranium-235
                    Comrade Glimmer
                    • Aug 2007
                    • 5042
                    • US

                    #10
                    Re: Rubycon BXA genuine or not?

                    if you open it up, you might find a whole 'nother capacitor inside (I said might)
                    Cap Datasheet Depot: http://www.paullinebarger.net/DS/
                    ^If you have datasheets not listed PM me

                    Comment

                    • R_J
                      Badcaps Legend
                      • Jun 2012
                      • 9534
                      • Canada

                      #11
                      Re: Rubycon BXA genuine or not?

                      I don't know if I would call them fake, more likely old stock, I have similar caps from the 1990's

                      Comment

                      • kazzek
                        New Member
                        • Feb 2020
                        • 9
                        • US

                        #12
                        Re: Rubycon BXA genuine or not?

                        Thanks again for all your feedback. Cartainly I can have them installed. I'm positive that the gear is going to work just fine. What I don't want to have is the situation that after 4 weeks or so caps will fail.
                        Last edited by kazzek; 03-16-2020, 11:31 PM.

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                        • kazzek
                          New Member
                          • Feb 2020
                          • 9
                          • US

                          #13
                          Re: Rubycon BXA genuine or not?

                          Here is another one also BXA series. Radial but low voltage.

                          https://www.ebay.com/itm/5PCS-Electr...oAAOSwU8hY6IKw
                          Attached Files

                          Comment

                          • Hitto
                            Senior Member
                            • Apr 2019
                            • 95
                            • Italy

                            #14
                            Re: Rubycon BXA genuine or not?

                            That one is not genuine for sure.
                            Rubycon capacitors do not have concentric lines on the bottom:



                            They measure decent though I would not use them in demanding application.

                            Genuine Rubycon capacitors should be this way:


                            I advise looking for a genuine component.
                            Last edited by Hitto; 03-22-2020, 09:10 AM.

                            Comment

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