Monolithic ceramic capacitor

Details Monolithic ceramic capacitor Monolithic ceramic capacitor

1996-12-20

1998-04-21

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361303, 361305, 3613061, 3613063, 3613081, 361309, 361313, 3613211, 3613214, 3613215, H01G 406, H01G 4005, H01G 4228, H01G 220

Patent

active

057424730

ABSTRACT:
Disclosed is a monolithic ceramic capacitor comprising dielectric ceramic layers made from a material which comprises an essential component of (1-.alpha.-.beta.){BaO}.sub.m.TiO.sub.2 +.alpha.Re.sub.2 O.sub.3 +.beta.(Mn.sub.1-x-y Ni.sub.x Co.sub.y)O (0.0025.ltoreq..alpha..ltoreq.0.025; 0.0025.ltoreq..beta..ltoreq.0.05; .beta./.alpha..ltoreq.4; 0.ltoreq.x<1.0; 0.ltoreq.y<1.0; 0.ltoreq.x+y<1.0; 1.000<m.ltoreq.1.035) and from about 0.5 to 5.0 mols, relative to 100 mols of the essential component, of a side component MgO, and containing from about 0.2 to 3.0 parts by weight, relative to 100 parts by weight of said components, of an oxide of the type of SiO.sub.2 --TiO.sub.2 --MO. The capacitor is low-priced and can be small-sized, while having large-capacity. It has a dielectric constant of 3000 or more, and has a high insulation resistance of 6000 M.OMEGA...mu.F or more and 2000 M.OMEGA...mu.F or more at room temperature and 125.degree. C., respectively. It has temperature-dependent capacitance that satisfies the B-level characteristic standard stipulated in the JIS Standard and the X7R-level characteristic standard stipulated in the EIA Standard, and has good weather resistance even in high-temperature load and high-humidity load conditions.

REFERENCES:
patent: 5130281 (1992-07-01), Sano et al.
patent: 5600533 (1997-02-01), Sano et al.

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