Low-power electric contact

Details Low-power electric contact Low-power electric contact

1980-10-01

1982-07-13

Little, Willis

Electricity: circuit makers and breakers

Electric switch details

Contact

200269, H01H 102

Patent

active

043396445

ABSTRACT:
A low-power electrical contact particularly suitable for switching and plug-in connections. The contact comprises an outer contact layer and a substrate composed of a copper base alloy. The contact layer consists essentially of an alloy of 35-55% by weight gold, 18-33.5% silver, 30-40% palladium, and (i) 1-6% indium, or (ii) 0.5-2% tin together with 0.5-2% indium. An intermediate layer of nickel or copper-nickel may be interposed between the contact layer and the substrate.

REFERENCES:
patent: 2400003 (1946-05-01), Hensel et al.
patent: 2793273 (1957-05-01), Underwood et al.
patent: 4050930 (1977-09-01), Motoyoshi et al.
patent: 4053728 (1977-10-01), Talento et al.
patent: 4069370 (1978-01-01), Harmsen et al.
patent: 4111690 (1978-10-01), Harmsen et al.
patent: 4138604 (1979-02-01), Harmsen et al.
A. Keil, Materials for Electrical Contacts, 1960, pp. 136-142.

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