Patent ID: 7544629

Claim:
A glass ceramic composition for forming a dielectric, which consists essentially of a Ba-containing compound powder and a powder of a non-lead glass which glass consists essentially of, as represented by mol % based on the following oxides, from 20 to 39% of SiO 2 , from 5 to 35% of B 2 O 3 , from 2 to 15% of Al 2 O 3 , from 1 to 25% of CaO+SrO, from 5 to 25% of BaO, from 0 to 35% of ZnO, and from 0 to 10% of TiO 2 +ZrO 2 +SnO 2 , provided that B 2 O 3 +ZnO is from 15 to 45%, and which does not contain alkali metal oxides, or contains such oxides in a total amount within a range of less than 1%, wherein the Ba-containing compound powder comprises a powder of a compound containing Ti, in addition to Ba, and the Ti/Ba molar ratio in said compound is from 3.5 to 5.0, wherein as represented by mass percentage, the content of the Ba-containing compound powder is from 25 to 75%, and the content of the powder of the non-lead glass is from 25 to 75%.