Importance

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Abstract

The present invention relates to a glass including, in mol % in terms of oxides: 68% or more of SiO₂; 0.1% to 8% of Al₂O₃; and 0.1% to 4% of SrO, in which [SiO₂]+[B₂O₃] is 88% or more, [B₂O₃]−([RO]+[R₂O]−[Al₂O₃]) is 27% or less, a relative dielectric constant at 25° C. and a frequency of 10 GHz is 4.5 or less, a dielectric loss tangent at 25° C. and a frequency of 10 GHz is 0.005 or less, ΔAbs-OH is 4.0 or less, a total content (RO) of MgO, CaO, SrO, and BaO is more than 0% to 6%, a total content (R₂O) of Li₂O, Na₂O, and K₂O is 0% to 1%, [Al₂O₃]−[RO] is −3% to less than 8%, [Al₂O₃]×[RO] is more than 0 to 30, [MgO]+[CaO] is 0.1% to 5.9%, and [MgO]/([MgO]+[Al₂O₃]) is 0 to 0.45.

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First Claim