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To provide a ceramic capacitor that can achieve both capacitance stability and high reliability.SOLUTION: A ceramic capacitor includes a laminate in which dielectric layers and internal electrode layers are alternately laminated, and when BaTiO3 is the main component and Ti of the main component is 100 atm%, the dielectric layer contains Mn of 0.05 atm% or more and 0.35 atm% or less as a first subcomponent, contains Mg of 0.4 atm% or more and 0.8 atm% or less as the second subcomponent, contains at least one rare earth element of Ho and Dy in total of 0.5 atm% or more and 0.9 atm% or less as a third subcomponent, contains V of 0.15 atm% or more and 0.30 atm% or less as a fourth subcomponent, contains Si of 0.4 atm% or more and 0.9 atm% or less as a fifth subcomponent, and contains Ca of 0.00 atm% or more and 0.45 atm% or less as a sixth subcomponent, and the average particle size of the ceramic particles constituting the dielectric layer is 280 nm or more and 380 nm or less.SELECTED DRAWING: Figure 1
【課題】 容量安定性と高信頼性とを両立することができるセラミックコンデンサを提供する。【解決手段】 誘電体層と内部電極層とが交互に積層された積層体を備え、誘電体層は、ＢａＴｉＯ３を主成分とし、当該主成分のＴｉを１００ａｔｍ％とした場合に、第１副成分としてＭｎを０．０５ａｔｍ％以上０．３５ａｔｍ％以下含み、第２副成分としてＭｇを０．４ａｔｍ％以上０．８ａｔｍ％以下含み、第３副成分としてＨｏおよびＤｙの少なくともいずれか１つの希土類元素を合計で０．５ａｔｍ％以上０．９ａｔｍ％以下含み、第４副成分としてＶを０．１５ａｔｍ％以上０．３０ａｔｍ％以下含み、第５副成分としてＳｉを０．４ａｔｍ％以上０．９ａｔｍ％以下含み、第６副成分としてＣａを０．００ａｔｍ％以上０．４５ａｔｍ％以下含み、誘電体層を構成するセラミック粒子の平均粒子径は、２８０ｎｍ以上３８０ｎｍ以下である。【選択図】 図１
To provide a ceramic capacitor that can achieve both capacitance stability and high reliability.SOLUTION: A ceramic capacitor includes a laminate in which dielectric layers and internal electrode layers are alternately laminated, and when BaTiO3 is the main component and Ti of the main component is 100 atm%, the dielectric layer contains Mn of 0.05 atm% or more and 0.35 atm% or less as a first subcomponent, contains Mg of 0.4 atm% or more and 0.8 atm% or less as the second subcomponent, contains at least one rare earth element of Ho and Dy in total of 0.5 atm% or more and 0.9 atm% or less as a third subcomponent, contains V of 0.15 atm% or more and 0.30 atm% or less as a fourth subcomponent, contains Si of 0.4 atm% or more and 0.9 atm% or less as a fifth subcomponent, and contains Ca of 0.00 atm% or more and 0.45 atm% or less as a sixth subcomponent, and the average particle size of the ceramic particles constituting the dielectric layer is 280 nm or more and 380 nm or less.SELECTED DRAWING: Figure 1
【課題】 容量安定性と高信頼性とを両立することができるセラミックコンデンサを提供する。【解決手段】 誘電体層と内部電極層とが交互に積層された積層体を備え、誘電体層は、ＢａＴｉＯ３を主成分とし、当該主成分のＴｉを１００ａｔｍ％とした場合に、第１副成分としてＭｎを０．０５ａｔｍ％以上０．３５ａｔｍ％以下含み、第２副成分としてＭｇを０．４ａｔｍ％以上０．８ａｔｍ％以下含み、第３副成分としてＨｏおよびＤｙの少なくともいずれか１つの希土類元素を合計で０．５ａｔｍ％以上０．９ａｔｍ％以下含み、第４副成分としてＶを０．１５ａｔｍ％以上０．３０ａｔｍ％以下含み、第５副成分としてＳｉを０．４ａｔｍ％以上０．９ａｔｍ％以下含み、第６副成分としてＣａを０．００ａｔｍ％以上０．４５ａｔｍ％以下含み、誘電体層を構成するセラミック粒子の平均粒子径は、２８０ｎｍ以上３８０ｎｍ以下である。【選択図】 図１
CERAMIC CAPACITOR
セラミックコンデンサ
KANEDA KAZUMI (author)
2022-06-14
Patent
Electronic Resource
Japanese
DIELECTRIC CERAMIC COMPOSITION, CAPACITOR, AND MULTILAYER LAMINATED CERAMIC CAPACITOR
| European Patent Office | 2019