Capacitor Temperature Rating

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • tjohnson4
    New Member
    • Nov 2010
    • 4
    #1

    Capacitor Temperature Rating

    I've been looking around for an hour or two and there's lots of great information here on capacitors. However, I haven't found much about temperature ratings on caps. I've been mostly looking this up because I found all of the caps on my motherboard that busted are within milimeters from the heat sink and about half a centimeter from my CPU.

    So, is it better to put caps with a higher temperature rating in close proximity to a CPU or is it not really worth the effort?
    Tags: None
    • Topcat
      The Boss Stooge
      • Oct 2003
      • 16955
      • United States
      #2
      Re: Capacitor Temperature Rating

      it's not really worth the effort or extra expense. If the caps around your CPU have failed and you want something a little more robust to heat failures, look into polymer caps. What board are you working with? This can narrow down what mods could be done.
      <--- Badcaps.net Founder

      Badcaps.net Services:

      Motherboard Repair Services
      ----------------------------------------------
      Badcaps.net Forum Members Folding Team
      http://folding.stanford.edu/
      Team : 49813
      Join in!!
      Team Stats

        Comment

        • PCBONEZ
          Grumpy Old Fart
          • Aug 2005
          • 10661
          • USA
          #3
          Re: Capacitor Temperature Rating

          You won't find much in the way of low ESR caps rated for more than 105C anyway.
          .
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

            Comment

            Previous template Next

            Related Topics

            Collapse
            • chth96
              Is it no harm to replace with capacitor without ripple current rating?
              by chth96
              When I tried to repair LG 29 inch CRT TV, I found that the ESR value of samyoung SMS capacitor(160v 2.2uf), which is very close to D1879 transistor, is 6 ohm.


              Judging from above ESR Meter Table,I think It is necessary to replace this sms capacitor.So I visited local electronics shop,and I purchased 160v 2.2uf rubycon YK capacitor.
              But when I browse through rubycon YK datasheet,I found that there is no ripple current rating for 160v 2.2uf specification. But On the contrary, I found 39 mA ripple current rating for 160v 2.2uf SMS capacitor.
              Rubycon YK DataSheet (b...
              04-19-2024, 05:19 AM
            • Prolog
              RTX 3080 FE Identifying capacitor
              by Prolog
              Hi people, I hope this is the correct spot to post this, I'm new to the forum.

              I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.

              I hope these photos make it clear which component I am referring to:
              (yes, the soldering is a bit botched from removing the blown one, I know)

              I have found the board schematic (attached), but there does not seem to be a boardview available. I have never...
              12-01-2024, 08:27 PM
            • Per Hansson
              Motor run capacitor physical size vs voltage rating & measurements?
              by Per Hansson
              (TL;DR skip the first paragraph)
              I encountered my first dead motor run capacitor at a customer this week.
              For some fields I guess it is a very common occurrence but the usual way for industrial machines here is to use 3-phase motors.
              (Unless a servo motor makes more sense that is).
              But for some reason this 3-phase machine uses a 1-phase motor for its liquid coolant pump.
              The pump would run but sometimes trip the 10A breaker.
              I monitored it starting and stopping for over an hour until it finally stopped in a specific spot between its windings:
              Then it could...
              09-20-2020, 06:32 AM
            • Adenitz
              Explanation of capacitor rating
              by Adenitz
              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?
              12-26-2022, 12:36 AM
            • chth96
              If I replace with inferior capacitor, Is it No harm to other IC components at all?
              by chth96
              I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
              Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
              It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
              So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
              I know that these capacitor will not last as long as nichicon capacitor...
              12-22-2023, 04:34 AM
            • Loading...
            • No more items.
            Working...