Patent ID: 6967180

Claim:
A dielectric ceramic composition comprising: 100 parts by weight of a primary component represented by the general formula a[(Sr b Ca 1-b )TiO 3 ]-(1−a)[Bi 2 O 3 ·nTiO 2 ] wherein a and b are each moles n is the molar ratio of TiO 2 to Bi 2 O 3 ; w parts by weight of MgTiO 3 ; x parts by weight of SiO 2 ; y parts by weight of MnO m (calculated as equivalents of MnCO 3 ); and z parts by weight of LnO k , wherein m is 1 to 2; Ln is at least one of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium and erbium; and k is in the range of 1.5 to 2 such that LnO k is electroneutral, wherein a, b, n, w, x, y and z satisfy the following conditions: 0.90≦a≦0.95, 0.90≦b≦0.95, 1.8≦n≦3.0, 5.0≦w≦10.0, 0.1≦x≦1.0, 0.1≦y≦0.3, and 1.0≦z≦5.0.