Patent ID: 6440883
Filing Date: 2002-08-27
Classification: C04B,H01P,H05K

Abstract:
A dielectric porcelain composition comprising:as a principal component, a complex oxide having a molar composition xMgOÂ·yAl2O3Â·zSiO2 wherein 10&lE;x&lE;40, 10&lE;y&lE;40, 20&lE;z&lE;80, and x+y+z=100, a primary crystalline phase of the complex oxide being a 2MgOÂ·2Al2O3Â·5SiO2 phase, and a ratio of a (241) peak intensity &bgr;p(241) and a (222) peak intensity &bgr;p(222) of X-ray diffraction of a &bgr; phase of the primary crystalline phase being 0.8&lE;&bgr;p(241)/&bgr;p(222)&lE;1.3.