Multilayer ceramic chip capacitor
First Claim
1. A multilayer ceramic chip capacitor comprising alternately stacked dielectric layers and internal electrode layers, whereinsaid dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, at least one of barium oxide and calcium oxide, and silicon oxide as minor components in such a proportion that there are presentMgO:
- 0.1-3 molMnO;
0.05-1.0 molBaO+CaO;
2-12 molSiO2 ;
2-12 molper 100 mol of BaTiO3, provided that the barium titanate, magnesium oxide, manganese oxide, barium oxide, calcium oxide, and silicon oxide are calculated as BaTiO3, MgO, MnO, BaO, CaO, and SiO2, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
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 SiO2 and up to 1 mol of Y2 O3 per 100 mol of BaTiO3. 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 Y2 O3, 2-12 mol of BaO+CaO, and 2-12 mol of SiO2 per 100 mol of BaTiO3, the capacitor shows improved DC bias performance.
-
Citations
16 Claims
-
1. A multilayer ceramic chip capacitor comprising alternately stacked dielectric layers and internal electrode layers, wherein
said dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, at least one of barium oxide and calcium oxide, and silicon oxide as minor components in such a proportion that there are present MgO: - 0.1-3 mol
MnO;
0.05-1.0 molBaO+CaO;
2-12 molSiO2 ;
2-12 molper 100 mol of BaTiO3, provided that the barium titanate, magnesium oxide, manganese oxide, barium oxide, calcium oxide, and silicon oxide are calculated as BaTiO3, MgO, MnO, BaO, CaO, and SiO2, respectively. - View Dependent Claims (2, 3, 4, 5)
- 0.1-3 mol
-
6. A multilayer ceramic chip capacitor comprising alternately stacked dielectric layers and internal electrode layers, wherein
said dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, yttrium oxide, at least one of barium oxide and calcium oxide, and silicon oxide as minor components in such a proportion that there are present MgO: - 0.1-3 mol
MnO;
0.05-1.0 molY2 O3 ;
up to 1 molBaO+CaO;
2-12 molSiO2 ;
2-12 molper 100 mol of BaTiO3, provided that the barium titanate, magnesium oxide, manganese oxide, yttrium oxide, barium oxide, calcium oxide, and silicon oxide are calculated as BaTiO3, MgO, MnO, Y2 O3, BaO, CaO, and SiO2, respectively. - View Dependent Claims (7, 8, 9, 10)
- 0.1-3 mol
-
11. A multilayer ceramic chip capacitor comprising alternately stacked dielectric layers and internal electrode layers, wherein
said dielectric layers contain barium titanate as a major component and magnesium oxide, yttrium oxide, at least one of barium oxide and calcium oxide, and silicon oxide as minor components in such a proportion that there are present MgO: - 0.1-3 mol
Y2 O3 ;
more than 1 mol-5 molBaO+CaO;
2-12 molSiO2 ;
2-12 molper 100 mol of BaTiO3, provided that the barium titanate, magnesium oxide, yttrium oxide, barium oxide, calcium oxide, and silicon oxide are calculated as BaTiO3, MgO, Y2 O3, BaO, CaO, and SiO2, respectively. - View Dependent Claims (12, 13, 14, 15, 16)
- 0.1-3 mol
Specification