Title :
Low firing Y5V relaxor multilayer ceramic capacitors
Author :
Chen, Gung-Fu ; Fu, Shen-Li
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
fDate :
3/1/1989 12:00:00 AM
Abstract :
Low firing Y5V multilayer ceramic capacitors (MLC) based on the low firing dielectrics Pb(Fe/sub 2/3/W/sub 1/3/)/sub 0.41/(Fe/sub 1/2/Nb/sub 1/2/)/sub 0.49/Ti/sub 0.1/O/sub 3/ were fabricated. The prepared Y5V MLC can be sintered at temperatures of 870 to 930 degrees C. Such a low firing temperature makes it possible to use Pd/Ag (10/90) as the internal electrode. Consequently, capacitor cost becomes lower. The dielectric properties of a fabricated MLC change sharply with DC bias. A fabricated 0.33- mu F 1206 size 50-V Y5V MLC features high volumetric efficiency (110 mu F/cm/sup 3/), low-loss tangent, (or=10/sup 3/ M Omega ), low aging rate (or=25.5 kV/mm). Possible explanations for the effect of bias and frequency on the dielectric properties are given.<>
Keywords :
capacitors; dielectric materials; surface mount technology; 0.33 muF; 1 Gohm; 50 V; 870 to 930 C; DC bias; MLC; PbFeO/sub 3/WO/sub 3/FeO/sub 3/NbO/sub 3/TiO/sub 3/; PdAg internal electrode; Y5V; aging rate; capacitor cost; characteristics; dielectric properties; dielectric strength; effect of bias; effect of frequency; insulation resistance; internal electrode; loss tangent; low firing dielectrics; low firing temperature; multilayer ceramic capacitors; volumetric efficiency; Capacitors; Ceramics; Costs; Dielectrics; Electrodes; Firing; Iron; Niobium; Nonhomogeneous media; Temperature;
Journal_Title :
Components, Hybrids, and Manufacturing Technology, IEEE Transactions on
