Chip resistor

Details Chip resistor Chip resistor

1997-09-04

1999-05-25

Gellner, Michael L.

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338308, 338332, H01C 1012

Patent

active

059072741

ABSTRACT:
The invention relates to a chip resistor which is used as a circuit part for various electric apparatuses. The object of the invention is to realize a low resistance and a low TCR, and also high accuracy and high reliability. In order to achieve the object, a chip resistor is configured so as to have: a substrate; a resistance layer which is formed on at least one face of the substrate and which is made of a copper nickel alloy; upper-face electrode layers which make surface contact with the upper faces of both the end portions of the resistance layer; and end-face electrodes which are formed so as to cover the upper-face electrode layers. Since the bonding between the resistance layer and the upper-face electrode layers is conducted by metal-to-metal bonding, particularly, impurities which may affect the properties do not exist in the interface. As a result, it is possible to realize a chip resistor which is excellent in heat resistance, and which has a low resistance and a low TCR.

REFERENCES:
patent: 4437140 (1984-03-01), Ohyama et al.
patent: 4684916 (1987-08-01), Ozawa
patent: 5510594 (1996-04-01), Mori et al.
patent: 5680092 (1997-10-01), Yamada et al.
Patent Abstracts of Japan, vol. 013, No. 207 (E-750), May 16, 1989 & JP 01 024401 A (Murata Mfg Co Ltd), Jan. 26, 1989, * abstract *.
Patent Abstracts of Japan, vol. 013, No. 410 (E-819), Sep. 11, 1989 & JP 01 151205 A (Matsushita Electric Ind Co Ltd), Jun. 14, 1989, * abstract *.
Patent Abstracts of Japan, vol. 016, No. 174 (E-1195), Apr. 27, 1992 & JP 04 018701 A (Murata Mfg Co Ltd), Jan. 22, 1992, * abstract *.
Patent Abstracts of Japan, vol. 097, No. 001, Jan. 31, 1997 & JP 08 236325 A (Hokuriku Electric Ind Co Ltd), Sep. 13, 1996, * abstract *.
Patent Abstracts of Japan, vol. 007, No. 251 (E-209), Nov. 8, 1983 & JP 58 138071 A (Matsushita Denki Sangyo KK), Aug. 16, 1983, * abstract *.

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