A dielectric ceramic composition comprised of at least dielectric particles having barium titanate as its main ingredient, wherein the ratio of dielectric particles having a surface diffusion structure comprised of a main ingredient phase comprised of the main ingredient and a diffusion phase present around the main ingredient phase with respect to said dielectric particles is 60% or more and the ratio of dielectric particles having a domain in the main ingredient phase with respect to the dielectric particles having the surface diffusion structure is 20% or less. According to the present invention, a dielectric ceramic composition and electronic device realizing good high temperature accelerated life can be provided.
This is a Continuation of application Ser. No. 11/604,741 filed Nov. 28, 2006, now abandoned, which in turn claims priority of Japanese Patent Application No. 2005-346881 filed Nov. 30, 2005. The disclosure of the prior application is hereby incorporated by reference herein in its entirety.
