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    Fusable Resistor

    Hey,
    Wondering if anyone can help me figure this out. I am trying to repair a small 12v 1A power supply. When I was "messing" with it I inadvertantly blew the fuse on the input. The supply states its:

    120v/.45A Input
    12v/1A Output

    After I removed the fuse it looks more like a resistor but apparently its a fusable resistor??

    Please see the pics.
    2 pics of the device
    1 pic of where the device sits on the PCB, its first inline from the AC neutral

    To me its looks like the color codes are:
    White, Brown, Brown, Black, Green = 911 Ohms
    The body is grey which I found to mean its fire/flame resistant.

    From the research I have done so far 911 Ohms doesnt even look like an option for a fusable resistor but really I don't know.

    Anyone have any ideas where to find a replacement or what should I use as a replacement?

    Thanks for any help.
    Attached Files

    #2
    Re: Fusable Resistor

    It says it right on the board 5.1R which is 5.1Ω Likely a 1 watt
    Green, Brown, Gold, Gold,
    White = fusible

    Digikey KNP1WSJR-52-5R1
    or MOSX1CT528R5R1J
    Last edited by R_J; 01-29-2023, 04:20 PM.

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      #3
      Re: Fusable Resistor

      Thank you!

      The 3rd Gold ring confused me. What does it mean?

      I get the Green = 5, Brown = 1, Gold = ??, Gold = x .1, White = Fusable

      Thanks again. Much appreciated.
      Last edited by hw9664; 01-29-2023, 09:27 PM.

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        #4
        Re: Fusable Resistor

        green=5
        brown=1
        gold#1= divide by 10
        gold#2= 5% tolerance
        white=fusible

        Comment


          #5
          Re: Fusable Resistor

          Thank you.

          I was referencing a 5 band resistor color code chart which led to my confusion. The other confusing part for me is that the fusable resistor doesnt following the spacing of the bands that a normal resistor follows. Is there a fusable resistor color code chart? Or do we use the resistor color code chart but treat it like a 4 band resistor when the fifth band is white?

          Again thanks for everyone's help. It's very much appreciated.

          Comment


            #6
            Re: Fusable Resistor

            [QUOTE=R_J;1203505]It says it right on the board 5.1R which is 5.1Ω Likely a 1 watt


            Thanks for pointing this out. It did not occur to me that it was the actual resistance value. All the other components on the PCB are numbered, R1, R2, R3... C1, C2, C3... etc. And now that I write this I realize that it said 5.1R not R5.1... Duh.

            You learn by your mistakes and I am learning today!

            Thanks for everyones patience with me.

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