Ceramic dielectric compositions and capacitors produced therefro

Details Ceramic dielectric compositions and capacitors produced therefro Ceramic dielectric compositions and capacitors produced therefro

1993-03-11

1994-11-01

Evans, Geoffrey S.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

501139, H01G 410, H01G 412

Patent

active

053611870

ABSTRACT:
Ceramic dielectric compositions for manufacturing multilayer ceramic capacitors (MLCC's) having very high dielectric constants between about 8,000-19,000 and meeting the Z5U and Y5V EIA (Electronic Industries Association) specifications for temperature coefficient of capacitance, are prepared from barium titanate host materials based upon the formulation (Ba.sub.1-x Ca.sub.x) (Ti.sub.1-y-z Sn.sub.y Zr.sub.z)O.sub.3, and doped with small amounts of niobium, manganese, lanthanum, zirconium and yttrium oxides to alter the dielectric spectrum so as to meet desired EIA specifications.

REFERENCES:
patent: 3569802 (1971-03-01), Brauer
patent: 4148853 (1979-04-01), Schuber
patent: 4477581 (1984-10-01), Nishioka et al.
patent: 4829033 (1989-05-01), Menashi et al.
patent: 4863883 (1989-09-01), Menashi et al.

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