Dielectric ceramic composition, electronic device, and...

Details Dielectric ceramic composition, electronic device, and... Dielectric ceramic composition, electronic device, and...

2005-08-23

2005-08-23

Brunsman, David (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C361S321200, C361S321300, C361S321400, C264S615000, C264S646000, C264S662000

Reexamination Certificate

active

06933256

ABSTRACT:
A dielectric ceramic composition comprising at least a main component containing a dielectric oxide of a composition expressed by {(Sr1−xCax)O}m.(Ti1−yZry)O2and a first subcomponent containing at least one type of compound selected from oxides of V, Nb, W, Ta, and Mo and/or compounds forming these oxides after firing, wherein the symbols m, x, and y showing the molar ratio of the composition in the formula contained in the main component are in relations of 0.94<m<1.08, 0≦x≦1.00, and 0≦y≦0.20 and the ratio of the first subcomponent with respect to 100 moles of the main component, which is converted to the metal element in the oxide, is 0.01 mole≦first subcomponent<2 moles. According to this dielectric ceramic composition, it is possible to obtain a superior resistance to reduction at the time of firing, obtain a superior capacity-temperature characteristic after firing, and improve the accelerated life of the insulation resistance.

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