Patent ID: 6184165
Filing Date: 2001-02-06
Classification: C04B,H01B

Abstract:
A dielectric porcelain composition comprising:a main component expressed in a general formula ofxBaO.multidot.y((1-t)Nd.sub.2 O.sub.3.multidot.tSm.sub.2 O.sub.3).multidot.zTiO.sub.2 ;where 6.ltoreq.x.ltoreq.23, 13.ltoreq.y.ltoreq.30, 64.ltoreq.z.ltoreq.68, 0.ltoreq.t<1 and x+y+z=100;said main component containing a sub component comprising Cu oxide in the range of 0.1 to 3.0 wt % in terms of CuO and glass composition in the range of 2.0 to 10 wt %;wherein 90 wt % or more of said glass composition is at least one selected from SiO.sub.2, B.sub.2 O.sub.3, MgO, BaO, SrO, ZnO and CaO, and said glass composition satisfies the conditions of: 5 wt %.ltoreq.SiO.sub.2.ltoreq.15 wt %; 15 wt %.ltoreq.B.sub.2 O.sub.3.ltoreq.25 wt %; 50 wt %.ltoreq.(MgO+BaO+SrO+ZnO+CaO).ltoreq.80 wt %; 90 wt %.ltoreq.(SiO.sub.2 +B.sub.2 O.sub.3 +MgO+BaO+SrO+ZnO+CaO).ltoreq.100 wt %.