Dielektrische Keramikzusammensetzung und mehrschichtiges Keramiksubstrat

摘要

A multilayered ceramic substrate is produced by laminating and sintering insulating ceramic layers and one or more dielectric ceramic layers. The insulating ceramic layer is composed of a BaO-Al2O3-SiO2 low temperature sintering ceramic material. The dielectric ceramic layer is composed of a dielectric ceramic material containing a dielectric ceramic component represented by BaO-TiO2-(Nd1-mMem)O3/2 wherein Me is a lanthanoid and 0<=m<=1.0, and a glass component of about 20.0 to 65.0 mole percent of barium oxide, about 5.0 to 50.0 mole percent of silicon oxide and about 10.0 to 50.0 mole percent of boron oxide.