X8R dielectric composition for use with nickel electrodes

Details X8R dielectric composition for use with nickel electrodes X8R dielectric composition for use with nickel electrodes

2009-05-04

2010-06-01

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

C501S139000, C264S615000, C361S321400

Reexamination Certificate

active

07727922

ABSTRACT:
Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3in various combinations.

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