Method of making chip resistors and in the chip resistors result

Details Method of making chip resistors and in the chip resistors result Method of making chip resistors and in the chip resistors result

1985-02-15

1987-02-24

Echols, Percy W.

Electrical resistors

With base extending along resistance element

Terminal extends in or through base

338309, 29620, 29621, 29842, 29852, 427102, H01G 114

Patent

active

046460578

ABSTRACT:
A method of forming chip resistors in which a resistive coating is applied to an insulating substrate which is subsequently divided up into single chip components includes the step of providing end terminations for the individual chip resistors before the sheet is divided up. This is achieved by forming a hole 13 in the substrate 11 at the position of each end termination and then coating the holes with an electrically conductive material 14 which electrically connects with the adjacent region of the resistive coating 12. In order to improve the solderability and the reliability of the end terminations the holes 13 may be filled with solder 15. The electrical value of the resistive element coating may then be adjusted to a precise value by trimming away some of the resistive element material with a laser. Finally, the substrate is divided up into the single chip resistor components.

REFERENCES:
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patent: 3495133 (1970-02-01), Miller
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patent: 3775725 (1973-11-01), Endo
patent: 4127934 (1978-05-01), Bartley et al.
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patent: 4320165 (1982-03-01), Cash
patent: 4373259 (1983-02-01), Motsch
patent: 4486738 (1984-12-01), Sadlo et al.

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