Alternative Mosfet

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  • grendal10
    Member
    • Apr 2015
    • 25
    • United Kingdom

    #1

    Alternative Mosfet

    hi
    im trying to fiix a hp pavillion, ive found 2 shorted mosfets.Unfortunatly they have been discontinued, im trying to find an alternative but finding that most i have looked at have a lower maximum Continuous Drain Current (ta lower tc higher) would this be ok or not and wondered if anybody knew of a better alternative.im trying to replace AON6370
    best replacment found so far is NVMFS4C310N.On the datasheets what do i need to make sure match on the replacement mosfet?

    thanks in advance for any info given
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: Alternative Mosfet

    Write board model number, attach schematics and point out which components you are talking about.
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

    • jasko_jacker
      Badcaps Legend
      • Oct 2014
      • 1137
      • italy

      #3
      Re: Alternative Mosfet

      the important parameters are:
      VDS and VGS which should be the same
      Rds (on) which should be equal to or less
      Id (continuos drain current) and Idm (pulsed ..) which can be greater but not less

      This is the direct answer to the question, but as Piernov says, it should be understood why the mosfets burned, if there is a short somewhere ....
      Last edited by jasko_jacker; 04-07-2020, 06:15 AM.

      Comment

      • grendal10
        Member
        • Apr 2015
        • 25
        • United Kingdom

        #4
        Re: Alternative Mosfet

        Thanks for the replies, unfortunately i can't find a schematic, i bought the laptop liquid damaged which was what im guessing caused the mosfet to blow, since the mosfets have been removed the shorts on the board have gone.Didn't want put an incompatible mosfet on and blow something else

        Comment

        • piernov
          Super Moderator
          • Jan 2016
          • 4435
          • France

          #5
          Re: Alternative Mosfet

          MOSFET requirements are not the same depending on the circuit so that's why I asked what I asked.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

          Comment

          • goodvibes
            Member
            • Apr 2020
            • 11
            • USA

            #6
            Re: Alternative Mosfet

            Thank you, @piernov for asking this question! I'm working on an ASUS board with the similar problem of a blown, discontinued MOSFET and trying to find a suitable replacement. Thanks @jasko_jasker for those parameters!

            Comment

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