Multilayer ceramic chip capacitor

Details Multilayer ceramic chip capacitor Multilayer ceramic chip capacitor

1993-07-13

1994-08-02

Chaudhuri, Olik

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

29 2542, 29 2503, 252520, 252521, 501137, 361311, 3613212, 3613215, H01G 700

Patent

active

053351398

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 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.

REFERENCES:
patent: 5097391 (1992-03-01), Nomura et al.

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