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    • 6. 发明专利
    • Dielectric ceramic composition
    • JP5422329B2
    • 2014-02-19
    • JP2009234892
    • 2009-10-09
    • 東光株式会社
    • 正和 渋谷
    • C04B35/462H01B3/02
    • PROBLEM TO BE SOLVED: To solve such problems that a conventional dielectric ceramic composition can not be used for stacked electronic components possible to downsize or thin because of high firing temperature and further, when especially using as a band-pass filter, the composition exhibits large insertion loss of a signal in a pass band because of high temperature coefficient in a resonant frequency and thus it is impossible to obtain satisfactory characteristics as the band-pass filter. SOLUTION: The ceramic of the composition includes MgTiO 3 , Mg2TiO 4 and CaTiO 3 , and is expressed by the formula: xMgTiO 3 /yMg 2 TiO 4 /zCaTiO 3 (wherein 75.8≤x≤82.5, 14.1≤y≤18.1 and 1.5≤z≤6.1 by mol%), and 25-30 pts.wt. of crystallized glass is added based on 100 pts.wt. of the ceramic. Thus, the temperature coefficient in the resonant frequency can be lessened, and the composition can be sintered at lower temperature than the melting points of silver, copper and the like which compose the conductor pattern between dielectric layers of the stacked electronic components. COPYRIGHT: (C)2011,JPO&INPIT