Dielectric porcelain composition and eletronic parts

Abstract

A dielectric ceramic composition comprising a main component composed of barium titanate, a first subcomponent including an oxide of AE (note that AE is at least one element selected from Mg, Ca, Ba and Sr), and a second subcomponent including an oxide of R (note that R is at least one element selected from Y, Dy, Ho and Er), wherein ratios of the subcomponents to 100 moles of the main component are, the first subcomponent: 0 mole<the first subcomponent<0.1 mole, and the second subcomponent: 1 mole<the second subcomponent<7 moles. According to the composition, a high specific permittivity can be attained, an insulation resistance lifetime can be maintained, the capacity-temperature characteristic can satisfy the X8R characteristic of the EIA standard, and firing in a reducing atmosphere can be realized.

Dependencies are inferred from the claim text.