Dielectric ceramic composition, multi-layer ceramic...

Details Dielectric ceramic composition, multi-layer ceramic... Dielectric ceramic composition, multi-layer ceramic...

2007-10-10

2010-10-26

Thomas, Eric (Department: 2831)

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

C361S311000, C501S137000, C029S025420

Reexamination Certificate

active

07821770

ABSTRACT:
A multi-layer ceramic capacitor has a temperature characteristic satisfying an X8R property and has a high specific resistance under a high temperature circumstance, in which the dielectric ceramic composition forming the dielectric ceramics is expressed by a formula: BaTiO3+aMgO +bMOx+cReO3/2+dSiO2, wherein MgO represents MgO conversion, MOxrepresents oxide conversion for 1 atom in 1 molecule of at least one metal selected from V, Cr, and Mn, ReO3/2represents oxide conversion for 1 atom in 1 molecule of at least one rare earth metal selected from Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Y, and SiO2represents SiO2conversion, and wherein 0.4≦a≦3.0 mol, 0.05≦b≦0.4 mol, 6.0≦c≦16.5 mol, 3.0≦d≦5.0 mol, 2.0≦c/d≦3.3, based on 100 mol of BaTiO3.

REFERENCES:
patent: 5822176 (1998-10-01), Sano et al.
patent: 2001-039765 (2001-02-01), None
patent: 2005-272263 (2005-10-01), None
patent: 2006008460 (2006-01-01), None

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