发明授权
- 专利标题: Multilayer ceramic chip capacitor
- 专利标题(中): 多层陶瓷片式电容器
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申请号: US90257申请日: 1993-07-13
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公开(公告)号: US5335139A公开(公告)日: 1994-08-02
- 发明人: Takeshi Nomura , Yukie Nakano , Akira Satoh , Tomohiro Arashi
- 申请人: Takeshi Nomura , Yukie Nakano , Akira Satoh , Tomohiro Arashi
- 申请人地址: JPX Tokyo
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX4-208483 19920713; JPX5-085705 19930319; JPX5-154355 19930601
- 主分类号: H01G4/12
- IPC分类号: H01G4/12 ; H01G7/00
摘要:
A multilayer ceramic chip capacitor includes alternately stacked dielectric layers and internal electrode layers. The dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, barium oxide and/or calcium oxide, silicon oxide and optionally, yttrium oxide as minor components in such a proportion that there are present 0.1-3 mol of MgO, 0.05-1.0 mol of MnO, 2-12 mol of BaO+CaO, 2-12 mol of SiO.sub.2 and up to 1 mol of Y.sub.2 O.sub.3 per 100 mol of BaTiO.sub.3. The capacitor satisfies the standard temperature dependence of capacitance and shows a minimized change of capacitance with time under an applied DC electric field and a long insulation resistance life. Where the dielectric layers contain 0.1-3 mol of MgO, 1-5 mol of Y.sub.2 O.sub.3, 2-12 mol of BaO+CaO, and 2-12 mol of SiO.sub.2 per 100 mol of BaTiO.sub.3, the capacitor shows improved DC bias performance.
公开/授权文献
- USD416208S Bowling alley console 公开/授权日:1999-11-09