Patent ID: 7605104

Claim:
A dielectric composition comprising: a main component of BaTiO 3 ; and sub-components containing a glass composition expressed by a formula: aLi 2 O-bK 2 O-cCaO-dBaO-eB 2 O 3 -fSiO 2 , where a+b+c+d+e+f=100, 2≦a≦10, 2≦b≦10, 0≦c≦25, 0≦d≦25, 5≦e≦20, and 50≦f≦80, wherein the sub-components comprise, based on 100 mole of the main component, 1.0 to 3.0 mole of the glass composition, 0.5 to 2.0 mole of MgCO 3 , 0.3 to 1.0 mole of rare earth oxide and 0.05 to 1.0 mole of MnO, where the rare earth oxide is at least one selected from a group consisting of Y 2 O 3 , Ho 2 O 3 , Dy 2 O 3 and Yb 2 O 3 .