Invention Grant
US08445397B2 Dielectric ceramic and laminated ceramic capacitor 有权
介质陶瓷和层压陶瓷电容器

Dielectric ceramic and laminated ceramic capacitor
Abstract:
A laminated ceramic capacitor which exhibits excellent lifetime characteristics in a high temperature loading test uses a dielectric ceramic constituting the dielectric layers which contains (Ba1-xCax)TiO3 as its main constituent, and contains a parts by mol of Al, b parts by mol of V, c parts by mol of Mg, and d parts by mol of Re with respect to 100 parts by mol of the (Ba1-xCax)TiO3. The Re is at least one metal element selected from among Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb, and the x, a, b, c, and d respectively satisfy the conditions of 0.050≦x≦0.150, a≧0.15, 0.05≦b≦0.50, c≦0.50, and d≧1.00.
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