What is this component, looks like a cap

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  • DanPoka
    Member
    • Jul 2023
    • 39
    • România

    #1

    What is this component, looks like a cap

    I'm looking to know what the blue component that says UEI 44n on it, is.. it looks to be a capacitor but when I measure it in circuit it measures 16pF one way and 28pF the other way. Was expecting 44nF. I've looked at capacitor marking and the marking is not conforming to standards. The circuit is from 1600w 240V to 110V AC to AC voltage converter that uses a triac and a diac to make the conversion.
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  • jiroy
    Badcaps Legend
    • Jun 2016
    • 2416
    • Lebanon

    #2
    Re: What is this component, looks like a cap

    That's a thermistor , not a capacitor , it's from NTC UEI series ..

    Comment

    • DanPoka
      Member
      • Jul 2023
      • 39
      • România

      #3
      Re: What is this component, looks like a cap

      Originally posted by jiroy
      That's a thermistor , not a capacitor , it's from NTC UEI series ..
      Thank you Jiroy. Much appreciated

      Comment

      • jiroy
        Badcaps Legend
        • Jun 2016
        • 2416
        • Lebanon

        #4
        Re: What is this component, looks like a cap

        Originally posted by DanPoka
        Thank you Jiroy. Much appreciated
        Welcome DanPoka; please notice that NTC isn't a company as it may look , it's an abbreviation for "Negative thermo coefficient" , so many companies make them ..

        Comment

        • eccerr0r
          Solder Sloth
          • Nov 2012
          • 8662
          • USA

          #5
          Re: What is this component, looks like a cap

          I'd like a full reverse engineer schematic of that converter, the positioning of that thermistor seems quite odd... might have to pull mine apart and see what's in it.

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