22uF / 400V ESR value ?

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  • bianchi77
    Badcaps Legend
    • Jun 2016
    • 1121
    • Australia

    #1

    22uF / 400V ESR value ?

    Everyone,

    I got ESR 1.1 Ohm for 22uF /400V electrolytic capacitor,
    Is it bad ?

    Cheers
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 31012
    • Albion

    #2
    Re: 22uF / 400V ESR value ?

    make & series would help.

    Comment

    • bianchi77
      Badcaps Legend
      • Jun 2016
      • 1121
      • Australia

      #3
      Re: 22uF / 400V ESR value ?

      Originally posted by stj
      make & series would help.
      It's written Ltec and 105 degree....

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: 22uF / 400V ESR value ?

        Have you searched for any of the data sheets for any of the Ltec caps ?
        The first three results are all Ltec data sheets.

        Comment

        • stj
          Great Sage 齊天大聖
          • Dec 2009
          • 31012
          • Albion

          #5
          Re: 22uF / 400V ESR value ?

          look for a 2 or 3 letter code.
          http://www.paullinebarger.net/DS/Ltec/

          Comment

          • bianchi77
            Badcaps Legend
            • Jun 2016
            • 1121
            • Australia

            #6
            Re: 22uF / 400V ESR value ?

            It's TY....from datasheet...I can not see ESR value ?
            Last edited by bianchi77; 10-25-2016, 04:33 AM.

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 31012
              • Albion

              #7
              Re: 22uF / 400V ESR value ?

              they arent listed as low impedance, so it's common that the value is not given.
              how is the capacitance?

              Comment

              • bianchi77
                Badcaps Legend
                • Jun 2016
                • 1121
                • Australia

                #8
                Re: 22uF / 400V ESR value ?

                it was 26 uF and when I measure with analog metre....it stopped on 10K on 10K scale...can not be completely discharge...

                Comment

                • stj
                  Great Sage 齊天大聖
                  • Dec 2009
                  • 31012
                  • Albion

                  #9
                  Re: 22uF / 400V ESR value ?

                  it may be o.k.
                  but if it's over the rated level it would be good to see the leakage level because sometimes a cap goes leaky and the uF rises at the same time.

                  Comment

                  • bianchi77
                    Badcaps Legend
                    • Jun 2016
                    • 1121
                    • Australia

                    #10
                    Re: 22uF / 400V ESR value ?

                    Originally posted by stj
                    it may be o.k.
                    but if it's over the rated level it would be good to see the leakage level because sometimes a cap goes leaky and the uF rises at the same time.
                    How can I know the leakage level ? from analog meter ? Does it say a leakage on it and needs to be replaced ?

                    Comment

                    • stj
                      Great Sage 齊天大聖
                      • Dec 2009
                      • 31012
                      • Albion

                      #11
                      Re: 22uF / 400V ESR value ?

                      you cant, only some digital component testers give you that data.

                      Comment

                      • bianchi77
                        Badcaps Legend
                        • Jun 2016
                        • 1121
                        • Australia

                        #12
                        Re: 22uF / 400V ESR value ?

                        I'd better replace it then...

                        Comment

                        • stj
                          Great Sage 齊天大聖
                          • Dec 2009
                          • 31012
                          • Albion

                          #13
                          Re: 22uF / 400V ESR value ?

                          that is simplest.

                          Comment

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