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High ESR Panasonic's from Arrow

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    High ESR Panasonic's from Arrow

    Right out of the bag I got some 22uf 25v caps from Arrow they are reading 3ohm ESR. That's a bit high isn't it?

    https://www.arrow.com/en/products/ee...220h/panasonic
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    #2
    Re: High ESR Panasonic's from Arrow

    Depends on the test frequency, these are standard caps not electrolytic so they should be tested at 120Hz.
    "The one who says it cannot be done should never interrupt the one who is doing it."

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      #3
      Re: High ESR Panasonic's from Arrow

      1000hour life 105' general purpose - why you buy those, cheng-x out of stock???

      Comment


        #4
        Re: High ESR Panasonic's from Arrow

        Originally posted by stj View Post
        1000hour life 105' general purpose - why you buy those, cheng-x out of stock???
        They were bought to replace some 85c caps in an amp. Funny I think they were Chang X. Correction, Jun Fu 85C. Surely a Panasonic 105c cap is miles better than an 85c Jun Fu
        Last edited by jayjr1105; 05-21-2021, 09:03 AM.
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        16GB Patriot 3600MHz
        MSI B450 Gaming Plus
        MSI Air Boost Vega 56
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          #5
          Re: High ESR Panasonic's from Arrow

          In the fine print of the Arrow webpage:

          Using this electrolytic EEA-GA1E220H aluminum capacitor from Panasonic in your electronic circuit you'll be able to generate high heat for a given current level due to its relatively high equivalent series resistance.
          Why someone would want to "generate high heat" in much of anything electronic eludes me, but the statement specifically mentions the part's "relatively high equivalent series resistance".
          PeteS in CA

          Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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            #6
            Re: High ESR Panasonic's from Arrow

            Why would you go with GA series instead of FR or FC
            9 PC LCD Monitor
            6 LCD Flat Screen TV
            30 Desk Top Switching Power Supply
            10 Battery Charger Switching Power Supply for Power Tool
            6 18v Lithium Battery Power Boards for Tool Battery Packs
            1 XBox 360 Switching Power Supply and M Board
            25 Servo Drives 220/460 3 Phase
            6 De-soldering Station Switching Power Supply 1 Power Supply
            1 Dell Mother Board
            15 Computer Power Supply
            1 HP Printer Supply & Control Board * lighting finished it *


            These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

            1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
            2 Hem Saw Computer Stack Board

            All of these had CAPs POOF
            All of the mosfet that are taken out by bad caps

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              #7
              Re: High ESR Panasonic's from Arrow

              Originally posted by sam_sam_sam View Post
              Why would you go with GA series instead of FR or FC
              They were cheap so I added them to an existing order. I figured they are Panasonic, how bad can they be.
              --------------------------------------------------------------
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              16GB Patriot 3600MHz
              MSI B450 Gaming Plus
              MSI Air Boost Vega 56
              Acer 32" 1440P Freesync
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              --------------------------------------------------------------
              Hakko FX-888D Station
              FX-8802 Iron
              MG Chem .8mm 63/37 RA 2.2%

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                #8
                Re: High ESR Panasonic's from Arrow

                as bad as they want them to be!

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                  #9
                  Re: High ESR Panasonic's from Arrow

                  Originally posted by jayjr1105 View Post
                  Right out of the bag I got some 22uf 25v caps from Arrow they are reading 3ohm ESR. That's a bit high isn't it?
                  Not for small 5x11 caps.
                  A lot of datasheets of GP caps will not list the ESR... but some more well-written ones do say it can be normal for the ESR to be up to 5-10 Ohms for some of these small 5x11 caps.

                  Heck, even entry-level low-ESR like Panny FC can read up to an Ohm or two at normal room temperatures (then try freezing one and see what happens to the ESR! )

                  Originally posted by stj View Post
                  1000hour life 105' general purpose - why you buy those, cheng-x out of stock???
                  TBH, I don't see anything wrong with 105C GP caps. The quality Japanese brands will last a lifetime without issues. I don't think I can say the same for lesser brands... much less garbage like Cheng/Chang/Chong +/-X. Just put some GP caps in a PC PSU - ones from a quality Japanese brand, and also some from cheap China/Taiwan brands. Then run the PSU and see which one lasts longer (and how much longer.) Chances are, the China/Taiwan brands won't last worth a damn.

                  Originally posted by jayjr1105 View Post
                  Surely a Panasonic 105c cap is miles better than an 85c Jun Fu

                  Any day!

                  Originally posted by jayjr1105 View Post
                  They were cheap so I added them to an existing order. I figured they are Panasonic, how bad can they be.
                  They'll be more than fine.
                  Of course, being only rated for 1000 hours, it is a good idea to keep them away from high-heat areas. Not that they won't last even there. All of my Sony CRT monitors are still running on original GP Japanese caps without issues. I haven't checked these small caps, though. But since everything is working OK, I haven't found a reason to anyways. Some people report these do go dry over the years... which I can't say I'm surprised. Most of my CRTs are 20 years old or more already! And they do actually run pretty warm (especially in the summer, when house temps can hit up to 30C in some rooms.)
                  Last edited by momaka; 05-27-2021, 02:39 PM.

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