Patent ID: 7439203
Filing Date: 2008-10-21
Classification: B32B,C04B,H01G,Y10T

Abstract:
1. 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 a second subcomponent including oxide silicon as a main component; a third subcomponent being at least one of V a fifth subcomponent including CaZrO 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 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.