Lifetime Estimation of Conductive Polymer Aluminum Solid Capacitors
●Subject series : PXN, PXT, PXJ, PXG, PXK, PXS, PXF, PXE, PXA, PXD, PXH, PSJ, PSG, PSK, PSF, PSE, PSC
●Conductive polymer aluminum solid capacitors are finite life electronic components like aluminum electrolytic capacitors.
●The lifetime is affected by ambient temperature, humidity, ripple current and surge voltage.
●The lifetime of aluminum electrolytic capacitors is affected mainly by the loss of electrolyte as the result of the liquid electrolyte evaporating through the rubber seal materials, resulting in capacitance drop and tanδ rise.
●On the other hand, the lifetime of conductive polymer aluminum solid capacitors is affected mainly by oxidation degradation of the conductive polymer caused by osmose of oxygen or the thermal degradation of the conductive polymer by ambient temperature or self-heating, resulting in ESR rise and tanδ rise.
●The infiltration rate of the oxygen is depend on the temperature as the liquid electrolyte evaporation and the relationship follows the
●Arrhenius's Law, too. Similarly, thermal degradation of the conductive polymer by self-heating follows the Arrhenius's Law, too.
●Therefore, the lifetime estimation has been using the theory of lifetime reducing by half at every 10℃ rise of the ambient temperature.
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PXN SERIES 、 PMA SERIES 、 PSC SERIES 、 PSE SERIES 、 PSF SERIES 、 PSK SERIES 、 PSG SERIES 、 PSJ SERIES 、 PXT SERIES 、 PXJ SERIES 、 PXG SERIES 、 PXK SERIES 、 PXS SERIES 、 PXF SERIES 、 PXE SERIES 、 PXA SERIES 、 PXD SERIES 、 PXH SERIES |
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Technical Documentation |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/06/02 |
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168 KB |
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