Explanation of capacitor rating

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  • Adenitz
    Senior Member
    • Jan 2021
    • 122
    • Congo
    #1

    Explanation of capacitor rating

    Hello,
    I'm reading an article about the "capacitor plaque" in early 2000s and I have found one sentence I cannot understand.
    The normal lifespan of a non-solid electrolytic capacitor of consumer quality, typically rated at 2000 h/85 °C and operating at 40 °C, is roughly 6 years. It can be more than 10 years for a 1000 h/105 °C capacitor operating at 40 °C.

    What this 2000h or 1000h means? Why 1000h capacitors have longer life span?
    Tags: None
    • Per Hansson
      Super Moderator
      • Jul 2005
      • 5894
      • Sweden
      #2
      Re: Explanation of capacitor rating

      A rough estimation is that capacitor lifetime doubles with each 10°C reduction of rated temperature.
      "The one who says it cannot be done should never interrupt the one who is doing it."

        Comment

        • PeteS in CA
          Badcaps Legend
          • Aug 2005
          • 3576
          • USA, Unsure of Planet
          #3
          Re: Explanation of capacitor rating

          An #,000 hour cap is that many hours at rated maximum temperature, voltage, and ripple current (if there is a ripple current rating).
          PeteS in CA

          Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
          ****************************
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