Patent ID: 7820578

Claim:
A method of production of a dielectric ceramic composition, the method comprising: preparing a dielectric oxide having a composition formula of: [(Ca x Sr 1-x )O] m [(Ti y Zr 1-y-Z Hf z )O 2 ] where x, y, z, and m in the formula are: 0.5≦x≦1.0, 0.01≦y≦0.10, 0<z≦0.20, and 0.90≦m≦1.04, mixing, with respect to 100 parts by weight of the dielectric ceramic composition, 1 to 10 parts by weight of a sintering aid and 0.1 to 1.5 parts by weight of sodium oxide, sodium carbonate, or a mixture thereof in terms of Na 2 O, and firing an obtained mixture; wherein said sintering aid comprises, with respect to 100 wt % of said sintering aid: 30 to 69 wt % of manganese oxide, manganese carbonate, or a mixture thereof in terms of MnO, 1 to 20 wt % of aluminum oxide in terms of Al 2 O 3 , and 30 to 50 wt % of silicon oxide in terms of SiO 2 .