Patent ID: 8343883

Claim:
A dielectric porcelain composition consisting essentially of: a major component represented by a composition foiinula (BaO.xTiO 2 ), where x is a molar ratio of TiO 2 to BaO and is within a range of 4.6 to 8; a first minor component represented by a composition formula r a B 2 O 3 , where r a is a weight ratio of B 2 O 3 with respect to the major component and is within a range of 0.5 to 5% by mass; and a second minor component represented by a composition formula r b CuO, where r b is a weight ratio of CuO with respect to the major component and is within a range of 0.1 to 3% by mass, wherein the dielectric porcelain composition has a linear expansion coefficient equal to or greater than 9.28 ppm/° C. and equal to or less than 9.64 ppm/° C. at a temperature of 250° C. when a reference temperature is 50° C.