村田电容基本知识

ChipMonolithicCeramicCapacitor贴片独石陶瓷电容器BasicContentsExplanation基本内容说明June1,2009ComponentBusinessUnitMurataManufacturingCo.,Ltd.株式会社村田制作所元件事业本部Note:注:Theinformationofthismaterialareasofthedatementionedabove.Theyaresubjecttochangewithoutadvancenotice.Ifthereareanyquestions,pleasecontactoursalesrepresentativesorproductengineers.对于这些材料信息以上面的日期为准。信息若有变更，恕不另行通知。若有任何疑问，请与我公司销售代表或产品工程师联系。1.MaterialofCapacitor电容器的材料2.CeramicMaterialandCharacteristic(Class1,Class2)陶瓷材料和特性3.Construction&ManufacturingProcess(MLCC)结构和陶瓷电容器的工序（MLCC）4.MLCCSalesMarket&ApplicationMLCC市场分类和应用5.MLCCMarketTrend(Hi-Capacitance&Miniaturization)MLCC市场趋势(高容量品和小型化)Contents内容1.MaterialofCapacitor电容器的材料2.CeramicMaterialandCharacteristic(Class1,Class2)陶瓷材料和特性3.Construction&ManufacturingProcess(MLCC)结构和陶瓷电容器的工序（MLCC）4.MLCCSalesMarket&ApplicationMLCC市场分类和应用5.MLCCMarketTrend(Hi-Capacitance&Miniaturization)MLCC市场趋势(高容量品和小型化)Contents内容MaterialofCapacitor电容器的材料FixedCapacitor固定电容器Film薄膜Ceramic陶瓷Aluminum铝Glass玻璃Mica云母ElectrolyticDoubleLayer双倍电解层Usingplasticfilmasthedielectric,thinmetalfilmmetalasinnerelectrodes,stackedandrolleduptogether.Nonpolarizedorganicfilmcapacitor.UsingCeramicasthedielectric,metalbakedwithceramicasinnerelectrodes,non-polarizedandnon-organiccapacitors.Usinghighpurityconductivematerialaspositiveelectrodes,oxidizedlayersontheelectrodes,eitherliquidorsolidelectrolytecontactingoxidizedlayersasthenegativeelectrodes.Usingglassfilmorglasspowderasthedielectric,metallicfoilormetallicpasteaselectrodes.UsingnaturalMicaasthedielectric,metallicfoilasinnerelectrodes.Impregnatedcollectingelectrodewithliquidelectrolyte,dividedintopositive/negative/byaporousseparatoraspolarizedcapacitors.100fF1pF10pF100pF1nF10nF100nF1μF10μF100μF1mF10mFCapacitanceRangebyMaterial电容器的材料AluminumElectrolyticCapacitor铝电解电容器GlassCapacitor玻璃电容器MicaCapacitor云母电容器Semi-conductiveCapacitor半导体电容器MonolithicCeramicCapacitor贴片陶瓷电容器DiscCeramicCapacitor(Disk-type)陶瓷电容器（圆盘状）FilmCapacitor薄膜电容器TantalumElectrolyticCapacitor钽电解电容器TheWonderStones-Ceramic奇石–陶瓷CeramicsthatStoreElectricity能贮存电的陶瓷CeramicsthatChangeanElectricFlowAccordingtotheEnvironment由环境能改变电流动的陶瓷CeramicsthatSenseInfraredRays能放射红外线的陶瓷CeramicsthatExpandandContract陶瓷的扩展和缩短CeramicsthatInduceMagnetism感应磁力的陶瓷CeramicsthatShutoutElectricity断电陶瓷CeramicsthatTransmitLight传输光的陶瓷CeramicsthatStoreElectricityDIELECTRICCERAMICS陶瓷储存电荷介电陶瓷*Thecapacitytostoreelectricitytemporarilybydielectricpolarization.用介电体的极化来暂时储存电荷*ACPasses,butDCisStopped.(Capacitor、EMIFIL…)AC能通过，但CD被卡住了。（电容器，滤波器…）CeramicsthatExpandandContractPIEZOELECTRICCERAMICS陶瓷的扩展和缩短压电陶瓷TheWonderStones-Ceramic奇石–陶瓷*Whenvoltageisapplied,piezoelectricceramicsexpandandcontract.一旦电压被应用，压电陶瓷就会被扩展和缩短*Whenforceisapplied,theygenerateavoltage.(PIEZOELECTRICBUZZERS,ULTRASONICSENSORS…)一旦施加外力，他们会产生电压。（压电蜂鸣器，超声波传感器）TheFunctionofCeramicCapacitor陶瓷电容器的特点Smoothing过滤De-coupling去耦Coupling耦合Tuning调谐Tempcompensation温度补偿Resonance谐振在耦合电路上电容器对DC会切断，并只能接受AC信号在谐振电路上电容器稳定的电震动去形成需要的信号对于电路的温度补偿元件的功能如晶体管在大气的温度中受影响。电容器对于这些影响作了补偿并确保正常操作。在调谐电路上电容器从众多应用中获得要求信号在旁路电路上电容器过滤信号并在回路里导致了不必要的信号在电源电路上电容器从来自出路的电能中消除噪音TheFunctionofCeramicCapacitor陶瓷电容器的功能Use用途Decoupling去耦Coupling耦合Tuning调谐Smoothingthevoltagewaveform平整波形电压Temp.Compensation温度补偿Oscillation振荡Function特点Whenmorethan2amplifiersconnected,capacitorsareusedsothateventheslightestamplifiedsignalwillnotbefedbackfromthefrontamplifier,whichcausesunstableoperationoroscillation.Whenacapacitorisconnectedtoanumberofamplifiersorothercircuits,iteffectivelyblockstheDCcurrentandpermitsA.Csignal.Capacitorsareusedtoselectthedesiredsignal.Amonolithiccapacitorisconnectedtoapositionfollowingarectifyingdiodeofthepowersupplycircuit,andwherethisdiodeisusedforrectifyingtheACrippleelementscontainedintheincomingACcurrent.Whenthevoltagewaveformrectifiedbythediodecontainsexcessiveripple,itshouldbeproperlysmoothedbeforeeventuallybeingpassedtoothercircuits.Thefunctionsofcomponentssuchastransistorsareaffectedbychangesinatmospherictemperature.Capacitorscompensateforthiseffectandensurenormaloperation.AnRCoscillationcircuitisformedbybeingconnectedtoaresistorwhereT.Cortolerancearenotrequired,e.g.,tuningcircuitsTheFunctionofCeramicCapacitor陶瓷电容器的功能CapacitorsshutoffDCandacceptonlyACsignals.电容器对DC会切断，只能接受AC信号0Coupling耦合CouplingCoupling耦合耦合003003Decoupling去耦DecouplingDecoupling去去耦耦CapacitorsshutoffDCandacceptonlyNoisesignals.电容器对DC会切断，并只能接受噪音信号TheFunctionofCeramicCapacitor陶瓷电容器的功能000ACsignalsarechangedtoDCsignals.AC信号被转换为DC信号Smoothing过滤SmoothingSmoothing过滤过滤TheFunctionofCeramicCapacitor陶瓷电容器的功能1.MaterialofCapacitor电容器的材料2.CeramicMaterialandCharacteristic(Class1,Class2)陶瓷材料和特性3.Construction&ManufacturingProcess(MLCC)结构和陶瓷电容器的工序（MLCC）4.MLCCSalesMarket&ApplicationMLCC市场分类和应用5.MLCCMarketTrend(Hi-Capacitance&Miniaturization)MLCC市场趋势(高容量品和小型化)Contents内容FixedCapacitor固定的电容器Film薄膜Ceramic陶瓷Aluminum铝Glass玻璃Mica云母ElectrolyticDoubleLayer双倍电解层PolyesterCapacitor(Mylar)聚酯电容器Polyethylene聚乙烯Polypropylene聚丙烯Polycarbonate聚碳酸酯Relativelysmall.Higherresistance,betterTCLarge/ExpensiveHigherresistance,betterTCHigherBDV,LargeVar