Can someone help me with finding one of these mosfet thanks

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  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6059
    • USA

    #1

    Can someone help me with finding one of these mosfet thanks

    I seem to put this in the wrong forum can you move it for me thanks

    Here is the mosfet in question

    I can not figure out the part number on this mosfet

    This is on a mig welder that I have repair about 2 years ago because the wire feed stop working
    got working again now the controller will not power ON

    There is another mosfet just below that goes to the main power supply and it looks like this one controls it

    I have not trace it out completely yet
    Attached Files
    Last edited by sam_sam_sam; 06-22-2019, 08:57 AM.
  • R_J
    Badcaps Legend
    • Jun 2012
    • 9583
    • Canada

    #2
    Re: Can someone help me with finding one of these mosfet thanks

    I can't make out the number but it looks similar to a IRFD120, It is a HVMDIP case style, It seems to be made by the old International Rectifier and could be custom number
    The part number should be the top number "109" normally it would be irfxxx

    here is the Digikey power mosfet, 4-dip,Hexdip,HVMDIP list https://www.digikey.com/products/en/...=1&pageSize=25
    Last edited by R_J; 06-22-2019, 09:52 AM.

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    • mariushm
      Badcaps Legend
      • May 2011
      • 3799

      #3
      Re: Can someone help me with finding one of these mosfet thanks

      A small tip: wet your finger and drag the finger over surface of the chip. Text should be more readable.
      Or: clean with isopropyl alcoohol then rub some writing chalk
      or: take photo with a blue/cold white led lightning the chip at sharp angle.

      It's an IR part, can see I AND R with logo between (a diode and stuff)
      End looks like 07 or 87 to me.
      so maybe IRF*07?

      does look like hvmdip package, as irfd110: https://cdn.badcaps-static.com/pdfs/...fac706c507.pdf
      Last edited by mariushm; 06-22-2019, 09:40 AM.

      Comment

      • sam_sam_sam
        Badcaps Legend
        • Jul 2011
        • 6059
        • USA

        #4
        Re: Can someone help me with finding one of these mosfet thanks

        Here is a better picture of it

        I can not find anything on it
        Attached Files

        Comment

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