From my 3D printer, is this a capacitor?

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  • CyberCiphers
    Random
    • Jul 2025
    • 6
    • Canada
    #1

    From my 3D printer, is this a capacitor?

    Hey there,
    I'm largely still a student and unsure about identifying components like this, anyone have any idea what this is and if I have another one, fairly straight forward to swap out?
    From my Bambu Labs AMS - had connected the wiring incorrectly .. Whoops!

    Cheers!



    Click image for larger version Name: IMG_20250715_071258.jpg Views: 77 Size: 898.1 KB ID: 3682954 Click image for larger version Name: IMG_20250715_071355.jpg Views: 77 Size: 684.1 KB ID: 3682953 Click image for larger version Name: _20250715_070946.jpg Views: 122 Size: 1.35 MB ID: 3682952
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    • PeteS in CA
      Badcaps Legend
      • Aug 2005
      • 3579
      • USA, Unsure of Planet
      #2
      Based on the silkscreen reference designator and it having three leads, I think it might have been a TVS diode.
      PeteS in CA

      Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
      ****************************
      To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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        Comment

        • CapLeaker
          Leaking Member
          • Dec 2014
          • 8132
          • Canada
          #3
          Whatever ED1 is for a TVS look at ED2. They are probably the same.

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 30997
              • Albion
              #4
              712
              SOT23 package.
              could be:
              NDS7002A
              V-MOS, 60V, 0.28A, <2Ω(0.5A) N-type Mosfet
              Attached Files

                Comment

                • redwire
                  Badcaps Legend
                  • Dec 2010
                  • 3906
                  • Canada
                  #5
                  Board marking "485" so I would say it is a dual TVS for protecting the RS-485 port. ED1 likely same as ED2 "712"
                  Bourns SM712 or Littelfuse SM712 etc.
                  If this is the port you wired wrong.

                    Comment

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