Patent ID: 11935698
Assignee: KEMET ELECTRONICS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. A multilayered ceramic capacitor comprising:
a plurality of dielectric ceramic layers wherein each layer of said layers has a dielectric composition comprising a primary component defined by:

(KxNayLizA1-x-y-z)m(NbuTav)O3 

wherein:
A is at least one element selected from the group consisting of Ca, Sr, and Ba;
B is at least one element selected from the group consisting of Ti, Zr, Hf and Sn;
x, y, z, u, v, and w are molar fractions of respective elements;
m is the molar ratio of A-site and B-site elements;
0.95≤m≤1.05;
0.05≤x≤0.90;
0.05≤y≤0.90;
0.00≤z≤0.03;
0<u<1;
0.0≤w≤0.3; and
u+v+w=1;
a first accessory ingredient comprising at least one rare-earth element selected from the group consisting of Y, Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu;
a second accessory ingredient comprising at least one transition metal element selected from the group consisting of V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, and Zn; and
a third accessory ingredient comprising a frit;
and a plurality of internal electrodes comprising base metals of Ni, Cu or alloys thereof;
and a pair of external electrodes formed at each end of said multilayered ceramic capacitor.