Low temperature-fired porcelain articles and electronic parts including such porcelain articles

摘要

A low temperature-fired porcelain article includes a barium component in an amount of 40 to 65 wt% when calculated as BaO, a silicon component in an amount of 25 to 46 wt% when calculated as SiO₂, an aluminum component in an amount of 0.1 to 20 wt% when calculated as Al₂O₃, a boron component in an amount of 0.3 to 1.5 wt% when calculated as B₂O₃, and a zinc component in an amount of 0.5 to 20 wt% when calculated as ZnO, and optionally a chromium component in an amount of 0.5 to 3.5 wt% when calculated as Cr₂O₃. The porcelain article has a dielectric constant εr of not more than 10, a quality coefficient Q of not less than 2500, and an absolute value of a temperature coefficient τf of the resonance frequency of not more than 30 ppm/°C, and is suitable for use in electronic components.