Dielectric ceramic composition

PROBLEM TO BE SOLVED : To obtain a dense sheetlike sintered compact satisfying Y5V characteristics and having a high relative dielectric constant, a long service life at a high temp. under load and a smooth surface by firing at a low temp. by incorporating prescribed amts. of compds. of Zn, Mn, Ti, Si and a rare earth element into barium calcium titanium stannate as a multiple oxide. SOLUTION : Barium calcium titanium stannate as a multiple oxide represented by the formula (Ba1-x Cax )(Ti1-y Sny )O3 (where 0.01=1, 500 and not causing defects for >=40hr in an electric field having 1.2×10V/mm intensity at 85 deg.C.