Difference between revisions of "Capacitor size"

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For ceramic capacitors, most (all) datasheets only contain a small range in V or C, so I did a search on farnell specifying
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[http://nl.farnell.com/jsp/search/browse.jsp?N=202740+110482324+110141065+110524857+110029770&Ns=P_PRICE_FARNELL_NL|0&locale=nl_NL&appliedparametrics=true&getResults=true&suppressRedirect=true&isRedirect=&No=0&divisionLocale=nl_NL&catalogId=&skipManufacturer=false&skipParametricAttributeId=&prevNValues=202740+110482324+110141065+110524857+110029770&filtersHidden=false&appliedHidden=false&autoApply=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D202740%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Dnl_NL%26divisionLocale%3Dnl_NL%26catalogId%3D%26skipManufacturer%3Dfalse%26skipParametricAttributeId%3D%26prevNValues%3D202740 case-style=1206, tolerance=10%, material=X7R, Temp=125C], and then searched the highest capacitance for each max Voltage, resulting in:
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{| border="1" cellpadding="5" cellspacing="0"
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|-
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! C [uF]
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! V [V]
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! CV
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! CV^2/2
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! CV/volume [mFV/m^3]
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! CV^2/(2*volume) [J/m^3]
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|-
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| 22 || 6.3 || 0.1 || 0.4 || 4.3e+04 || 1.4e+08
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|-
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| 22 || 10.0 || 0.2 || 1 || 6.9e+04 || 3.4e+08
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| 10 || 16.0 || 0.2 || 1 || 5e+04 || 4e+08
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|-
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| 10 || 25.0 || 0.2 || 3 || 7.8e+04 || 9.8e+08
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| 4.7 || 50.0 || 0.2 || 6 || 7.3e+04 || 1.8e+09
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|-
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| 1 || 100.0 || 0.1 || 5 || 3.1e+04 || 1.6e+09
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|-
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| 0.1 || 200.0 || 0.02 || 2 || 6.2e+03 || 6.2e+08
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| 0.068 || 500.0 || 0.03 || 8 || 1.1e+04 || 2.7e+09
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| 0.033 || 630.0 || 0.02 || 7 || 6.5e+03 || 2e+09
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| 0.022 || 1000.0 || 0.02 || 1e+01 || 6.9e+03 || 3.4e+09
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| 0.001 || 2000.0 || 0.002 || 2 || 6.2e+02 || 6.2e+08
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The volume was calculated using: 1206; L=3.2mm, W=1.6mm, T=0.8mm..1.6mm (mostly 1.0m), M_MB=0.6mm, v=2mm*1.6mm*1.0mm=3.2e-9m^3
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1856565RL http://www.farnell.com/datasheets/1662086.pdf

Latest revision as of 16:15, 8 March 2013

A few Panasonic Aluminum Electrolytic Capacitors (all have diameter 18mm, length 35.5mm = 1.78e-05 m^3):

C [mF] V [V] CV CV^2/2 CV/volume [mFV/m^3] CV^2/(2*volume) [J/m^3]
22.0 6.3 139 437 7.8e+03 2.5e+07
15.0 10.0 150 750 8.4e+03 4.2e+07
10.0 10.0 100 500 5.6e+03 2.8e+07
6.8 25.0 170 2125 9.5e+03 1.2e+08
4.7 35.0 164 2879 9.2e+03 1.6e+08
3.3 50.0 165 4125 9.3e+03 2.3e+08
2.2 63.0 139 4366 7.8e+03 2.5e+08
1.0 100.0 100 5000 5.6e+03 2.8e+08

For ceramic capacitors, most (all) datasheets only contain a small range in V or C, so I did a search on farnell specifying case-style=1206, tolerance=10%, material=X7R, Temp=125C, and then searched the highest capacitance for each max Voltage, resulting in:

C [uF] V [V] CV CV^2/2 CV/volume [mFV/m^3] CV^2/(2*volume) [J/m^3]
22 6.3 0.1 0.4 4.3e+04 1.4e+08
22 10.0 0.2 1 6.9e+04 3.4e+08
10 16.0 0.2 1 5e+04 4e+08
10 25.0 0.2 3 7.8e+04 9.8e+08
4.7 50.0 0.2 6 7.3e+04 1.8e+09
1 100.0 0.1 5 3.1e+04 1.6e+09
0.1 200.0 0.02 2 6.2e+03 6.2e+08
0.068 500.0 0.03 8 1.1e+04 2.7e+09
0.033 630.0 0.02 7 6.5e+03 2e+09
0.022 1000.0 0.02 1e+01 6.9e+03 3.4e+09
0.001 2000.0 0.002 2 6.2e+02 6.2e+08

The volume was calculated using: 1206; L=3.2mm, W=1.6mm, T=0.8mm..1.6mm (mostly 1.0m), M_MB=0.6mm, v=2mm*1.6mm*1.0mm=3.2e-9m^3 1856565RL http://www.farnell.com/datasheets/1662086.pdf

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