LOW TEMPERATURE CO-FIRED MICROWAVE DIELECTRIC CERAMICS AND THE MANUFACTURING METHOD THEREOF

摘要

A low temperature co-fired microwave dielectric ceramic is provided to enable firing work at a low temperature of 900 deg.C or lower, and to realize excellent microwave dielectric properties. A low temperature co-fired microwave dielectric ceramic is based on cordierite to which a glass frit composition formed of PbO-SiO2-B2O3-Al2O3-K2O system or B2O3-ZnO-Na2O-SiO2-Al2O3 system. The PbO-SiO2-B2O3-Al2O3-K2O system has a compositional formula of aPbO-bSiO2-cB2O3-dAl2O3-eK2O (wherein a is 50wt%-60wt%, b is 30wt%-40wt%, c is 5wt%-15wt%, d is 3wt%-10wt%, and e is 0wt%-5wt%). The B2O3-ZnO-Na2O-SiO2-Al2O3 system has a compositional formula of fB2O3-gZnO-hNa2O-iSiO2-jAl2O3 (wherein f is 30wt%-50wt%, g is 25wt%-2wt%, h is 10wt%-20wt%, i is 5wt%-15wt%, and j is 0-5).