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Laminated ceramic capacitor 发明授权

2023-05-03 3790 207K 0

专利信息

申请日期 2025-07-10 申请号 JP2008550070
公开(公告)号 JP5307554B2 公开(公告)日 2013-10-02
公开国别 JP 申请人省市代码 全国
申请人 Murata Manufacturing Co Ltd6231
简介 Provided is a dielectric ceramic in which, while achieving a dielectric constant epsilon of 500 or more, a breakdown voltage higher than 90 kV/mm can be obtained and which is suitable for constituting dielectric ceramic layers of a multilayer ceramic capacitor for medium-to-high voltage application. As the dielectric ceramic constituting dielectric ceramic layers of the multilayer ceramic capacitor, a dielectric ceramic including, as a main component, (Ba1-xCax)mTiO3 where 0.30<=x<=0.50, and 0.950<=m<=1.025 is used. Preferably, the dielectric ceramic further includes a rare-earth element in an amount of 1 to 14 parts by mole relative to 100 parts by mole of the main component, and further includes Mn, Mg, and Si, respectively, in amounts of 0.1 to 3.0 parts by mole, 0.5 to 5.0 parts by mole, and 1.0 to 5.0 parts by mole relative to 100 parts by mole of the main component.


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