Panasonic Corporation

Muneyuki Sawada

Hiroshi Kagata

Hidenori Katsumura

Ryuichi Saito

A dielectric porcelain composition of the present invention includes a first component and second component. If the first component is represented by the general formula of xBaO-yNdO-zTiO-wBiO(provided that x+y+z+w=100), x, y, z, and w satisfy 12&#x2266;x&#x2266;16, 12&#x2266;y&#x2266;16, 65&#x2266;z&#x2266;69, and 2&#x2266;w&#x2266;5, respectively. The second component includes 30 to 37 wt % of BaO, 33 to 46 wt % of SiO, 8 to 12 wt % of LaO, 3 to 7 wt % of AlO, 0 to 1 wt % of SrO, 0 to 10 wt % of LiO, 0 to 20 wt % of ZnO, and 7 wt % or less of B0. The compounding ratio of the second component is between 10 wt % and 30 wt % when the sum of the first and second components is 100. In addition, 0.1 to 1 parts by weight of LiO and 3 to 10 parts by weight of ZnO, relative to 100 parts by weight of the sum of the first and second components, is also contained as a third component. An average particle diameter of the dielectric mixed powder forming dielectric porcelain composition before firing is 0.9 &#x3bc;m or less.

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Osaka, Japan

Muneyuki Sawada