| 简介 |
PROBLEM TO BE SOLVED : To provide a dielectric ceramic composition which is able to set the capacitance change rate to a predetermined range with respect to the absolute value of a capacitance temperature property within a wide temperature range even when the absolute value is large.
SOLUTION : The dielectric ceramic composition comprises a main component expressed by (Ba1-x-ySrxCay)m(Ti1-zZrz)O3, Mg oxide, Mn(Cr) oxide, rare earth oxide, an oxide including Si and a composite oxide including Ba, Sr and Zr, wherein 0.20≤x≤0.40, 0≤y≤0.20, 0≤z≤0.30 and 0.950≤m≤1.050. Within a temperature range of -25 to 105°C, the capacitance change rate on the basis of a capacitance at 25°C is within a range of -15 to +5% with respect to a straight line having a slope "a" which shows the capacitance temperature property on the basis of the capacitance at 25°C, and the slope "a" is -5, 500 to 1, 800 ppm/°C.
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