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1、SAMXON®萬裕電子有限公司MANYUEELECTRONICSCO.,LTD.香港柴灣嘉業街10號益高工業大廈16字樓16/F.,YIKOINDUSTRIALBUILDING,10,KAYIPSTREET,CHAIWAN,HONGKONG.Tel:(852)28975277Fax:(852)25586299LifecalculationofAluminumElectrolyticCapacitorReleasedate2006.12.27Preparedby康雪梅CheckedbyR&D刘渭清Approvedby
2、REMARK:Thiscolumnof“approvedby”mustbeR&Ddepartmentmanagersignature.Page5of5Thefactorthatcanaffectthelifeofaluminumelectrolyticcapacitorwillbetheambienttemperature,theripplecurrentoncapacitorandtheactualvoltageoncapacitor.BecausetheESRofaluminumelectrolyticcapa
3、citorislargerthanthatofothertypecapacitor,heatwilloccuroncapacitorduringchargingwithripplecurrent.Inordertoguaranteethelifeofcapacitor,themaximumripplecurrentwillberegulatedoneachcapacitor.Lifecalculationofcapacitorduringchargingripplecurrent：1.ForWV＜160V(Radi
4、als、Snap-intype)ΔT0-ΔTx5T0-Tx10Lx=L0×2×2………………（1）WhereT0：Themaxusagetemperature，℃；Tx：Ambienttemperaturewhenthecapacitorusing，℃；ΔT0：TemperaturerisingincorecapacitorwhenthetemperaturebeingT0withtheallowablemaxripplecurrent，℃；(wheretheΔT0valuedesignedfor105℃typei
5、s5℃&theΔT0valuedesignedfor85℃typeis10℃)ΔTx：TemperaturerisingincorecapacitorwhenthetemperaturebeingTxwiththeactualripplecurrent，℃；L0：Base(Assured)lifetimeofthecapacitor,hours；Lx：Lifetimeofthecapacitortobeestimated,hours.2.ForWV≥160V(Radials、Snap-intype)2.1Where
6、△Tx≤20℃V0VXT0-Tx10ΔT0-ΔTx8Lx=L0×2×2×（）n………………（2）WhereT0：Themaxusagetemperature，℃；Tx：Ambienttemperaturewhenthecapacitorusing，℃；ΔT0：TemperaturerisingincorecapacitorwhenthetemperaturebeingT0withtheallowablemaxripplecurrent，℃；(wheretheΔT0valuedesignedfor105℃typeis
7、5℃&theΔT0valuedesignedPage5of5for85℃typeis10℃)ΔTx：TemperaturerisingincorecapacitorwhenthetemperaturebeingTxwiththeactualripplecurrent，℃；L0：Base(Assured)lifetimeofthecapacitor,hours；Lx：Lifetimeofthecapacitortobeestimated,hours；V0：Ratedvoltageofthecapacitor,V；Vx
8、：Actualoperatingvoltagewhichisappliedtothecapacitor,V(Here0.8Vo≤Vx≤Vo)；n：ThefactorofV0andVxeachother,asfollowtable:nTypen=4.4Radialtype(ΦD≥10mmandL＞20mm)Snap-intypen=2Radialtype(ΦD
