Patent ID: 6703336
Filing Date: 2004-03-09
Classification: C03C,C04B

Abstract:
A dielectric ceramic composition including as an essential component a composition represented by the formula of xBaO-yTiO2-zNd2O3, wherein 0.02&lE;x&lE;0.2, 0.6&lE;y&lE;0.8, 0.01&lE;z&lE;0.3, x+y+z=1, with the ceramic composition further comprising:a first glass component comprising PbO, ZnO and B2O3; a second glass component, comprising SiO2 and B2O3, with the first and second component having the following relationship 10&lE;a&lE;80 and 1&lE;b&lE;100 wherein â€œaâ€  indicates the content of the first glass component and â€œbâ€  indicates the content of the second glass component with both â€œaâ€  and â€œbâ€  in parts by weight relative to 100 parts by weight of the essential component; and a third component comprising Al2O3, SrTiO3, GeO2 and Li2O with the content of each such compound to be determined from the following: 1&lE;c&lE;60, 0.1&lE;d&lE;30, 5&lE;e&lE;30 and 0.1&lE;f&lE;7, wherein â€œcâ€  indicates the content of Al2O3, â€œdâ€  indicates the content of SrTiO3, â€œeâ€  indicates the content of GeO2 and â€œfâ€  indicates the content of Li2O all in parts by weight relative to 100 parts by weight of the essential component.