| abstract |
Constituting of laminated ceramic capacitor of the present invention, in the crystalline particle that constitutes dielectric layer, the 1st rare earth element (R1) and the 2nd rare earth element (R2) are spread respectively, in the crystalline particle of average grain diameter, diameter D with respect to crystalline particle, the 1st rare earth element (R1) is X1 (%) apart from the diffusion layer degree of depth d1 proportion on crystalline particle surface, and diameter D with respect to crystalline particle, the 2nd rare earth element (R2) is when the diffusion layer degree of depth d2 proportion on crystalline particle surface is X2 (%), the diffusion layer degree of depth d2 of the 2nd rare earth element (R2) extends to more deep than the diffusion layer degree of depth d1 of the 1st rare earth element (R1), X1=10～35%, and the relation of X2＞X1 (with d2＞d1 same meaning) is set up, therefore as capacity through the time change indicator capacity temperature characteristic satisfy (55～150 ℃ of EIA standard x 8R characteristics, in Δ C/C=± 15%), and in accelerated test resistance change rate little (IR average life span long), reliability is good. |