10 amp 300v diodes

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  • awyatt2
    Badcaps Veteran
    • Feb 2012
    • 407
    • america

    #1

    10 amp 300v diodes

    anyone have a source for the 10 amp 300 volt diodes Samsung uses in their power supplies? they are to220 case isolated tab common cathode and common anode. I need one of each and their numbers cross to nothing. I have repaired this set twice using common switching diodes, they just don't last long. they go in a pn50a550.
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: 10 amp 300v diodes

    What's the part #?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • awyatt2
      Badcaps Veteran
      • Feb 2012
      • 407
      • america

      #3
      Re: 10 amp 300v diodes

      part numbers are fcu10uc30 and fru10uc30. one is common anode other common cathode. I have the set running again but its only a matter of months

      Comment

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #4
        Re: 10 amp 300v diodes

        I believe Tom advised in your last post on theis set that Digikey have some or at least one
        http://www.digikey.com/product-detai...WGI-ND/1147822

        Did you check that out?
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • Ltank
          Badcaps Veteran
          • Jun 2013
          • 776
          • USA

          #5
          Re: 10 amp 300v diodes

          Mouser has ON Semiconductor Ultrafast 600V 10Amp diodes that would work. If the 300v are always failing up the voltage rating

          http://www.mouser.com/ProductDetail/...kJxUsojjzf4%3d
          Last edited by Ltank; 07-14-2014, 09:41 AM.

          Comment

          • Ltank
            Badcaps Veteran
            • Jun 2013
            • 776
            • USA

            #6
            Re: 10 amp 300v diodes

            Sorry I was thinking single ened not dual diodes.

            Comment

            • awyatt2
              Badcaps Veteran
              • Feb 2012
              • 407
              • america

              #7
              Re: 10 amp 300v diodes

              selldoor, yes I did and I bought the one type 10 of them. the other one fru10uc30 I cant find anything to replace it other than taking 2 singles and butting them with a jumper. and its not a voltage problem really its more heat related. just no where to get a fan close enough to the heatsink rail to do any good.

              Comment

              • flocko
                Badcaps Legend
                • Nov 2012
                • 1121
                • uk

                #8
                Re: 10 amp 300v diodes

                Try these FFPF20UP60DN and RFU20 TM5S the first one i have used for Samsung Powerboard and Sus board repairs the second are used on a lot of Panisonic/ Samsung/LG boards hope this is of some use Flocko

                Comment

                • selldoor
                  Slow Learner
                  • Dec 2010
                  • 7870

                  #9
                  Re: 10 amp 300v diodes

                  Originally posted by flocko
                  Try these FFPF20UP60DN and RFU20 TM5S the first one i have used for Samsung Powerboard and Sus board repairs the second are used on a lot of Panisonic/ Samsung/LG boards hope this is of some use Flocko
                  Those both appear to be common CATHODE types the one he is struggling to find is common ANODE type
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                  • awyatt2
                    Badcaps Veteran
                    • Feb 2012
                    • 407
                    • america

                    #10
                    Re: 10 amp 300v diodes

                    thanks selldoor, the only place I found is a china source which is probally not worth trying. guess I will continue with the fast switching diode, this time I mad a mount from brass where I could at least heatsink these. tha common anode I have 8 more of but when the common cathode goes it takes out one side of the common anode. I have repaired it twice now. Samsung dosent even have them and when they did they were 27.00 us a pop.

                    Comment

                    • selldoor
                      Slow Learner
                      • Dec 2010
                      • 7870

                      #11
                      Re: 10 amp 300v diodes

                      I thought you said the other way round ? you have a supply of common CATHODE
                      from digikey?
                      Please upload pictures using attachment function when ask for help on the repair
                      http://www.badcaps.net/forum/showthread.php?t=39740

                      Comment

                      • SteveNielsen
                        Retired Tech
                        • Jun 2012
                        • 2327
                        • USA

                        #12
                        Re: 10 amp 300v diodes

                        I'm confused. The diode tabs were not attached to a heatsink?

                        Comment

                        • awyatt2
                          Badcaps Veteran
                          • Feb 2012
                          • 407
                          • america

                          #13
                          Re: 10 amp 300v diodes

                          yes, I have it backwards, I got distracted by my wife.
                          steve the plain diodes I have been using to make the dual from have no tab the originals do. I made what I have by back to back switching diodes. common anodes I have I need the common cathodes. with the homemade heatsink these may last a bit longer. thanks for trying to help .

                          Comment

                          • selldoor
                            Slow Learner
                            • Dec 2010
                            • 7870

                            #14
                            Re: 10 amp 300v diodes

                            Originally posted by awyatt2
                            common anodes I have I need the common cathodes. .


                            Still dont think you have got that right? common cathode ones are at digikey?
                            Last edited by selldoor; 07-17-2014, 02:32 AM.
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                            • tonydix
                              Member
                              • Dec 2013
                              • 31
                              • Panama

                              #15
                              Re: 10 amp 300v diodes

                              did you ever source these two diodes ?

                              Comment

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