| 摘要 |
An insulator ceramic composition is composed of (A) an MgO-MgAl<SB>2</SB>O<SB>4</SB> ceramic powder, and (B) a glass powder containing silicon oxide in a proportion of about 13 to 50 weight % in terms of SiO<SB>2</SB>, boron oxide in a proportion of about 3 to 60 weight % in terms of B<SB>2</SB>O<SB>3</SB>, and aluminum oxide in a proportion of 0 to about 20 weight % in terms of Al<SB>2</SB>O<SB>3</SB>. The composition may also contain Li<SB>2</SB>O, K<SB>2</SB>O or Na<SB>2</SB>O in a proportion of up to 10 weight % relative to the entirety of the glass powder, zinc oxide in a proportion of up to 15 weight % relative to the composition and copper oxide in a proportion of up to 3 weight % relative to the entirety of the glass powder. Ceramic multilayer substrates, e.g. capacitors and inductors, comprising a layer of the composition are described. |
