Mystery cap - what is this?

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  • Sparky
    High voltage
    • Jan 2007
    • 234
    • USA
    #1

    Mystery cap - what is this?

    I have several of these caps that came out of an L&C PSU that was pumping a healthy 12.7V+ on the 12V rail and cooking hardware They survived extreme heat, the PCB around them, the glue, and wire insulation (rated at 80C) were all scorched by some surrounding components (resistors and such). Any idea who makes these? I don't recognize the symbol on them.

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    • Tom41
      Badcaps Veteran
      • Oct 2005
      • 336
      • England
      #2
      Re: Mystery cap - what is this?

      I don't think we ever identified the logo (some people say they're rebranded Lelon caps), but they're known bad caps. My Kobian Mercury PSU was full of those caps; one vented and caused the PC to reboot at random.
      You know there's something wrong when you open your PC and it has vented Rubycons...

        Comment

        • Sparky
          High voltage
          • Jan 2007
          • 234
          • USA
          #3
          Re: Mystery cap - what is this?

          I figured they were probably crap considering what they came from I'll pitch them from my collection then. While I'm at it I'll toss those G-Luxon caps too.

          Thanks.

            Comment

            • Maxxarcade
              Badcaps Veteran
              • Jul 2006
              • 973
              #4
              Re: Mystery cap - what is this?

              I want to say those are YEA, but not sure. I don't remember if they even make caps.

                Comment

                • Sparky
                  High voltage
                  • Jan 2007
                  • 234
                  • USA
                  #5
                  Re: Mystery cap - what is this?

                  OK I have these others here, are they any good or should I pitch them too - TEC, Daewoo, Chmec, Sam Young?

                  Also I see in the bad caps list that teapo is listed - I thought they were used in some of the higher-quality PSUs like PCP&C?

                    Comment

                    • Maxxarcade
                      Badcaps Veteran
                      • Jul 2006
                      • 973
                      #6
                      Re: Mystery cap - what is this?

                      Chmec is definately bad, not sure about the others. Teapo is so-so. They hold up reasonably well when kept cool, and used without extreme ripple current. Sparkle/Fortron source uses them, as well as PCP&C.

                        Comment

                        • gonzo0815
                          Badcaps Legend
                          • Feb 2006
                          • 1600
                          #7
                          Re: Mystery cap - what is this?

                          Daewoo is not that bad, but i only have seen them in some smaller SMPS like DSL modems etc.
                          After abouth 5 years at hot ambient temperature theyre had given up.
                          Sam Young is widely used in some Acer TFT monitors and similar equipment.
                          I have seen several of them bulging after a few years exposed to some ripple current, but far better than usuall first choice crap like Tbor, JJ or similar not to name crap.

                          So for boards and psu i would scratch both from the list, but may be those Daewhoos are not that bad for small power low ambient temp applications or GP cap.

                            Comment

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