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Help identify mosfet 2000w noname power supply

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    Help identify mosfet 2000w noname power supply

    Hi.
    Im troubleshooting a 2000w power supply for a mining rig.

    Im looking for replacement mosfets for the 070N080C2 shown in picture attached.

    And also why did they blow? What else should i check?
    Do i need to replace some controller chip also?

    /Ken
    Attached Files

    #2
    Re: Help identify mosfet 2000w noname power supply

    Google 70N80.
    If all 3 pins are shorted look at the gate drive, if there is a low ohm resistor, check it for spec.

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      #3
      Re: Help identify mosfet 2000w noname power supply

      Ok thnx. I seem to have problems finding some to buy but there is a datasheet and should be able to find a subtitute.

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        #4
        Re: Help identify mosfet 2000w noname power supply

        Datasheet
        Attached Files

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          #5
          Re: Help identify mosfet 2000w noname power supply

          Datasheet says N-MOSFET 80V, 6.0mΩ, 118A

          Have found 75v 3.3mohm 120A

          Do those work? Do i have to replace all of them?

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            #6
            Re: Help identify mosfet 2000w noname power supply

            You should be replacing all of them, unless you are in a pinch. You could cheat and put some different Mosfets in there, but it will change the rating of the inverter. Lower voltage rated isn’t a good idea. Look at HM70N80 at AliExpress…
            Also google “finding mosfet substitute” and read up.
            Last edited by CapLeaker; 04-09-2022, 07:15 PM.

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