Patent ID: 7393803

Claim:
A dielectric ceramic composition comprising, as a main component, a tungsten-bronze-type composite oxide represented by a composition formula (K 1-y Na y )(Sr 1-m-n Ba m Ca n ) 2 Nb 5-x A x O 15 wherein 0≦y<0.2, 0≦m≦0.5, 0≦n≦0.5, 0≦m+n≦0.7, x≦1, and A is at least one member selected from the group consisting of Mn, Cr, Co, Fe, Ni, Zn, Mg and Si, and, as an auxiliary component, Mn or Mn combined with A in a total amount in the range of 0.1 to 40 parts by mole relative to 100 parts by mole of the main component.