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Low firing Z5U relaxor multilayer ceramic capacitor

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2 Author(s)
Chen Gung-Fu ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Fu Shen-Li

A low firing Z5U multilayer ceramic capacitor (MLC) based on the low-firing dielectrics of Pb(Fe2/3W1/3)0.41 (Fe1/2Nb1/2)0.49 Ti0.1O3-Bi2O3/Li2 O was fabricated. The prepared Z5U MLC can be sintered at temperature as low as 830°C for 2 h. Such a low firing temperature makes it possible to use a high silver content or 100% silver conductors as the internal electrode. Consequently, capacitor cost becomes lower. Dielectric properties of fabricated MLC are fairly stable against the drift of sintering temperature. Fabricated 0.1-μF 1206 size 50-V Z5U MLC features a high volumetric efficiency (25 μF/cm3), low-loss tangent (<0.5%), high insulation resistance (>104 MΩ), low aging rate (<1.0%/decade), and higher working voltage

Published in:

IEEE Transactions on Components, Hybrids, and Manufacturing Technology  (Volume:11 ,  Issue: 4 )