Patent ID: 7273825

Claim:
A dielectric ceramic comprising a composition represented by 100(Ba 1-x-y Sr x Ca y ) m (Ti 1-z Zr z )O 3 +aBaO+bR 2 O 3 +cMgO+dMnO+eCuO+fV 2 O 5 +gX u O v in which R represents at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu and Y; and X comprises Si, wherein 0≦x≦0.05, 0≦y≦0.08, 0≦z≦0.05, 0.990≦m 100.2≦(100 m+a)≦102; 0.05≦b≦0.5, 0.05≦c≦2, 0.05≦d≦1.3, 0.1≦e≦1.0, 0.02≦f≦0.15, and 0.2≦g≦2.