Electrical plug-type connector

Details Electrical plug-type connector Electrical plug-type connector

1976-07-16

1979-02-06

Padgett, Benjamin R.

Electricity: circuit makers and breakers

Electric switch details

Contact

200270, 339278C, 428929, 200268, H01H 102

Patent

active

041386043

ABSTRACT:
To provide low contact resistance, long life, and resistance against tarnishing under corrosive, particularly sulfur atmospheres, a substrate carrier has a layer of palladium applied thereto, of a thickness between 0.5 and 5 .mu.m, preferably between 1 and 3 .mu.m, to which a coating of gold is applied which is porous and has a thickness of only between 0.05 .mu.m and 0.1 .mu.m; the porous gold coating forms islands of gold on the palladium which, in use and as the terminal is wiped against a counter element, smears over the palladium, thus effectively covering the palladium, preventing tarnishing, and maintaining low contact resistance throughout the useful life of the terminal element.

REFERENCES:
patent: 3648355 (1972-03-01), Shida et al.
patent: 3671702 (1972-06-01), Penczek
patent: 3711383 (1973-01-01), Schiekel et al.
patent: 3927841 (1975-12-01), Iacobucci

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