Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1988-10-18
1989-12-05
Griffin, Donald A.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
264 61, 501136, H01G 1005, H01G 406, C04B 3546
Patent
active
048856614
ABSTRACT:
A mutli-layer ceramic capacitor principally made up of (a) internal electrode layers containing at least copper and (b) ceramic dielectric layers extending between the internal electrode layers. The materials which form the ceramic include copper oxide and an oxide component A and B, which component A is selected from group I of lead, calcium, strontium, and barium, and component B is selected from group II of magnesia, nickel, titanium, zirconium, zinc, niobium, tantalum, and tungsten. The component A includes at least lead and component B includes at least two of the substances in group II, and wherein a ratio between values a and b are chosen so that 0.985<a/b<1.110, where the value a denotes the total mol value of the substances in the component A and the value b denotes the total mol value of the substances in component B. The copper oxide component is present in an amount of about 0.03 to 0.65 wt % in terms of Cu.sub.2 O content.
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patent: 4101952 (1978-07-01), Burn
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patent: 4265668 (1981-05-01), Fujiwara et al.
patent: 4607314 (1986-08-01), Wada et al.
patent: 4752858 (1988-06-01), Yokotani et al.
Kagata Hiroshi
Kato Jun-ichi
Mihara Toshihiro
Niwa Hiroshi
Yokotani Yoichiro
Griffin Donald A.
Matsushita Electric - Industrial Co., Ltd.
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