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Multilayer ceramic capacitor 发明授权

2023-04-21 1960 1307K 0

专利信息

申请日期 2025-09-03 申请号 US16574232
公开(公告)号 US11276527B2 公开(公告)日 2022-03-15
公开国别 US 申请人省市代码 全国
申请人 Murata Manufacturing Co Ltd
简介 A multilayer ceramic capacitor that includes a laminate having a plurality of dielectric layers and a plurality of internal electrodes that are alternately stacked, and external electrodes. Each of the dielectric layers contains first crystal grains and second crystal grains that each contain Ba, Ti, and a rare-earth element. A first mole ratio M1 of the rare-earth element to the Ti in a range from an interface to 50 nm inclusive of the first crystal grains and a second mole ratio M2 of the rare-earth element to the Ti in a range of 50 nm to 100 nm inclusive from the interface satisfy 0.95≤M1/M2≤1.05. A third mole ratio M3 of the rare-earth element to the Ti in the second crystal grains is half or less of a fourth mole ratio M4 of the rare-earth element to the Ti in the first crystal grains.


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