Trying to choose a replacement zener diode

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  • Beowulf
    Senior Member
    • Dec 2012
    • 175
    • USA

    #1

    Trying to choose a replacement zener diode

    Hi,
    I'm troubleshooting the power board on this TV, with some help here and there, and I found this zener diode that is shorted, among other things.
    The P/N is 1ZB36 BL, here is the datasheet: http://www.mediafire.com/view/?iyadi5csc4k9dfd

    Since I can't find the same one to order it I'm trying pick a close match from digikey.

    Would this one be ok despite the difference in reverse current ratings?
    http://www.digikey.com/product-detai...PCT-ND/3104322

    Thanks!
  • Blargh523
    Member
    • Dec 2012
    • 46
    • USA

    #2
    Re: Trying to choose a replacement zener diode

    Lower reverse current should be okay.

    Comment

    • Beowulf
      Senior Member
      • Dec 2012
      • 175
      • USA

      #3
      Re: Trying to choose a replacement zener diode

      Thank you!

      Comment

      • momaka
        master hoarder
        • May 2008
        • 12170
        • Bulgaria

        #4
        Re: Trying to choose a replacement zener diode

        Originally posted by Blargh523
        Lower reverse current should be okay.
        Isn't it the other way around? That is, if the replacement zener diode is rated for a higher reverse current, it should be better (assuming all other parameters such as voltage and wattage ratings are the same or very similar).

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #5
          Re: Trying to choose a replacement zener diode

          The spec is for Leakage current:

          It is the leakage current before the apply voltage reach the Vz voltage point of the Zener Diode.
          http://www.reuk.co.uk/What-is-a-Zener-Diode.htm

          The 36V Zener (1N4753A) that he wants to use has
          Current Leakage of 5µA @ 27.4V

          The original has leakage of 10uA @28.8V
          Last edited by budm; 01-09-2013, 12:42 AM.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

          • Blargh523
            Member
            • Dec 2012
            • 46
            • USA

            #6
            Re: Trying to choose a replacement zener diode

            Yeah, I should have specified reverse leakage, not just "reverse current".

            Comment

            • bufferb
              Member
              • Jan 2016
              • 10
              • canada

              #7
              Re: Trying to choose a replacement zener diode

              TV LC320ME Emerson # 610 0n board diode 1ZB36 .WERE DO I BUY IT,
              OR A MATCH,REPLY TANK'S

              Comment

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