Patent ID: 8008222
Filing Date: 2011-08-30
Classification: C04B,H01G

Abstract:
1. A dielectric ceramic composition comprising: a main component expressed by a general formula: a first subcomponent comprising Mg oxide, a second subcomponent comprising at least one oxide selected from oxides of Mn and Cr, a third subcomponent comprising R oxide, wherein R is selected from at least one of Y, La Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, and Yb, and a fourth subcomponent comprising an oxide including Si, wherein the general formula shows wherein ratios of the respective subcomponents with respect to 100 moles of said main component are the first subcomponent: 0.5 to 5 moles (in terms of element), the second subcomponent: 0.05 to 2 moles (in terms of element), the third subcomponent: 1 to 8 moles (in terms of element), the fourth subcomponent: 0.5 to 5 moles (in terms of an oxide or a complex oxide), and within a temperature range of −25 to 105° C., a capacitance change rate on the basis of capacitance at 25° C., with respect to slope “a” of a line which shows capacity temperature characteristic on the basis of capacitance at 25° C., is within −15 to +5%, and said slope “a” is −7000 to −3000 ppm/° C.