| abstract |
A laminate of a barium titanate-based high dielectric constant ceramic layer and a low dielectric constant ceramic layer is bonded by low temperature firing while suppressing delamination and cracks. A ceramic multilayer substrate obtained by co-sintering a low dielectric constant layer made of a low dielectric constant insulator and a high dielectric constant layer made of a high dielectric constant dielectric is provided. The low dielectric constant layer is xBaO-yTiO 2 -zZnO (x, y, z each represents a molar ratio, x + y + z = 1; 0.09 ≦ x ≦ 0.20; 0.49 ≦ y ≦ 0.61 A low dielectric constant ceramic component having a composition of 0.19 ≦ z ≦ 0.42), and 1.0 part by weight or more and 5.0 parts by weight or less added to 100 parts by weight of the low dielectric constant ceramic component Contains boron oxide-containing glass component. The high dielectric constant layer is made of a barium titanate-based dielectric material to which CuO and Bi 2 O 3 are added. [Selection] Figure 1 |