Patent ID: 7742278

Claim:
A dielectric ceramic composition comprising as a main component, a composition represented by the general formula (1-a) (K 1-x Na x )(Sr 1-y-z Ba y Ca z ) 2 Nb 5 O 15 -a(Ba 1-b Ca b )TiO 3 in which the (K 1-x Na x )(Sr 1-y-z Ba y Ca z ) 2 Nb 5 O 15 has a tungsten bronze structure and the (Ba 1-b Ca b )TiO 3 has a perovskite structure, a, b, x, y, and z are all molar amounts and 0.3≦a≦0.8, 0≦b≦0.2, 0≦x<0.2, 0.1≦y≦0.5, 0.1≦z≦0.5, and 0.2≦y+z≦0.7; and M, as an additional component, in an amount of 0.1 to 40 parts by mole relative to 100 parts by mole of the main component where M is at least one element selected from the group consisting of V, Mn, Cr, Fe, Co, Ni, Zn, Mg, and Si.