Patent ID: 7242571

Claim:
A dielectric ceramic comprising: a primary component comprising a barium titanate base composite oxide represented by the general formula (Ba 1−h−i−m Ca h Sr i Gd m ) k (Ti 1−y−j−n Zr y Hf j Mg n )O 3 , in which 0.995≦k≦1.015, 0≦h≦0.03, 0≦i≦0.03, 0.015≦m≦0.035, 0≦y<0.05, 0≦j<0.05, 0≦(y+j)<0.05, and 0.015≦n≦0.035, the Ba being partly replaced with Gd, and the Ti being partly replaced with Mg; and an additive component containing Ma, Mb and Mc in which Ma is at least one of Ba, Sr, and Ca, Mb is at least one of Mn and Ni, and Mc is Si or both Si and Ti, and in which Ma is contained in a positive amount which is less than 1.5 moles with respect to 100 moles of the primary component, Mb is contained in a positive amount which is less than 1.0 mole with respect to 100 moles of the primary component, and Mc is contained in a positive amount in the range of from 0.5 to 2.0 moles with respect to 100 moles of the primary component.