Patent ID: 7439203

Claim:
A dielectric ceramic composition comprising a main component including barium titanate; an oxide of Al; a first subcomponent being at least one of MgO, CaO, BaO, SrO and Cr 2 O 3 ; a second subcomponent including oxide silicon as a main component; a third subcomponent being at least one of V 2 Q 5 , MoO 3 and WO 3 ; a fifth subcomponent including CaZrO 3 or CaO+ZrO 2 ; a sixth subcomponent including an oxide of R2, where R2 is selected from Y, Dy, Ho, Tb, Gd and Eu; and a seventh subcomponent including MnO; wherein ratios of the respective subcomponents with respect to 100 moles of said main component are first subcomponent: 0.1 to 3 moles, second subcomponent: 2 to 10 moles, third subcomponent: 0.01 to 0.5 mole, fifth subcomponent: larger than 0 mole but not larger than 5 moles, sixth subcomponent: larger than 0 mole but not larger than 9 moles, wherein the number of moles of the sixth subcomponent is in terms of an R2 element, and seventh subcomponent: larger than 0 mole but not larger than 0.5 mole, said dielectric ceramic composition includes a plurality of dielectric particles; and concentration of Al in each of said dielectric particles becomes lower from a particle surface to inside thereof.