Composition for insulating ceramics and insulating ceramics using the same

摘要

An insulating ceramic composition includes a mixture of a ceramic powder containing MgAl2O4 and a glass powder containing 30-60% by mole of silicon oxide on the basis of SiO2 and 20-55% by mole of magnesium oxide on the basis of MgO, and the ceramic powder further includes Mg2SiO4 and TiO2. The insulating ceramic composition can be fired at 1000° C. and co-sintered with Ag and Cu. An insulating ceramic obtained by sintering the insulating ceramic composition has a high Q-factor and is therefore suitable for ceramic multilayer substrates used at high frequencies.