Metal foil resistor

Details Metal foil resistor Metal foil resistor

1977-06-03

1979-12-04

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

29621, 29627, 338195, 338275, H01C 700

Patent

active

041764455

ABSTRACT:
A thin film foil resistor is disclosed wherein a thin metallic foil is bonded to an insulating substrate and a circuit path is formed on the foil by photographic artwork-etching techniques. After the circuit is formed, the structure is subjected to another etching process to reduce the thickness of the foil circuit thereby adjusting the value of the resistor. Terminal lands of the circuit are electroplated and the connecting leads are soldered to the lands. The value of the resistor is finally adjusted by use of a laser beam, and the resistor is encapsulated.

REFERENCES:
patent: 3109228 (1963-11-01), Dyke
patent: 3350777 (1967-11-01), Mendelsohn
patent: 3517436 (1970-06-01), Zandman
patent: 3757745 (1973-09-01), Wilker
patent: 3778744 (1973-12-01), Brandi
patent: 3824521 (1974-07-01), Horii
patent: 3842495 (1974-10-01), Bennett
patent: 4053977 (1977-10-01), Simon
patent: 4075452 (1978-02-01), Simon

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