Resistor and method of manufacture

Patent metadata

Field	Value
Publication number	US-9934891-B1
Application number	US-201615213199-A
Country	US
Kind code	B1
Filing date	Jul 18, 2016
Priority date	Mar 10, 2014
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

The present technology is directed toward a resistor and method of manufacturing the resistor. One or more layers of insulative material are formed on a length of resistive material. Portions of the one or more layers insulative material are removed from the resistive material in a pattern based on a predetermined approximate dimension and predetermined approximate resistance value. A first set of one or more conductive layers are formed on the portions of the resistive material exposed by the insulative coating to form a plurality of conductive pads on the resistive material between the patterned insulative material. The sets of conductive pads are probed to measure a preliminary resistance value between the sets of conductive pads. For one or more sets of conductive pads, a calculated amount of additional insulative material adjacent the respective conductive pads is removed based upon the preliminary resistance value between the corresponding set of conductive pads and a final resistance value to exposed additional portions of resistive material. The conductive pads and resistive material is cut at substantially the middle of each conductive pad to form pieces. A second set of one or more conductive layers are formed on the first set of one or more conductive layers at opposing ends of each piece, and the additionally exposed portions of the resistive material.

First claim

What is claimed is:

1. A resistor comprising:
a resistive material having predetermined resistivity and a first region;
an insulative material having a substantially uniform thickness disposed on the first region of the resistive material; and
terminations disposed at opposing ends of the resistive material, wherein the terminations comprise:
a first set of one or more conductive layers disposed on a second and a third region of the resistive material wherein the third region of the resistive material is at an opposing end from the second region of the resistive material; and
a second set of one or more conductive layers disposed on the first set of one or more conductive layers, and disposed in a fourth region of the resistive material between the insulative material and the first set of one or more conductive layers on the second region of the resistive material, and disposed in a fifth region of the resistive material between the insulative material and the first set of one or more conductive layers on the third region of the resistive material at the opposing end from the second region of the resistive material.

2. The resistor of claim 1 , wherein the insulative material is removably adhered to the resistive material.

3. The resistor of claim 1 , wherein the first set of one or more conductive layers are adhered to and electrically coupled to the resistive material.

4. The resistor of claim 1 , wherein the second set of one or more conductive layers are electrically coupled to the first set of one or more conductive layers and are adhered to and electrically coupled to the resistive material.

5. The resistor of claim 1 , wherein the resistive material has predetermined dimensions.

6. The resistor of claim 1 further comprising an outer layer comprising a solderable surface disposed on the second set of one or more conductive layers.

7. The resistor of claim 1 , wherein the outer layer is electrically coupled to the second set of one or more conductive layers and are adhered to and electrically coupled to the resistive material.

8. The resistor of claim 1 wherein said outer layer comprises tin.

9. A resistor comprising:
a resistive material having predetermined resistivity and a first region;
an insulative material having a substantially uniform thickness disposed on the first region of the resistive material; and
terminations disposed at opposing ends of the resistive material, wherein the terminations comprise:
a first set of one or more conductive layers disposed on a second and a third region of the resistive material wherein the third region of the resistive material is at an opposing end from the second region of the resistive material; and
a second set of one or more conductive layers disposed on the first set of one or more conductive layers and disposed on the resistive material in a fourth region of the resistive material between the insulative material and the first set of one or more conductive layers on the second region of the resistive material, and wherein said second set of one or more conductive layers is also disposed on the resistive material in a fifth region of the resistive material between the insulative material and the first set of one or more conductive layers on the third region of the resistive material at the opposing end from the second region of the resistive material.

10. The resistor of claim 9 wherein said first set of one or more conductive layers is not present in the fourth and the fifth regions.

11. The resistor of claim 9 wherein said resistive material comprises a substantially parallelepiped shape.

12. The resistor of claim 9 wherein a portion of said resistive material has been removed causing said resistive material to lack a substantially parallelepiped shape.

13. The resistor of claim 12 wherein the removed portion of said resistive material has been replaced by an insulative material.

14. The resistor of claim 9 wherein a length of said second set of one or more conductive layers is different between said fourth and said fifth regions.

15. The resistor of claim 9 wherein:
a portion of said resistive material has been removed on a side of said resistive material causing said resistive material to lack a substantially parallelepiped shape, and
wherein a length of said second set of one or more conductive layers is different between said fourth and said fifth regions.

16. The resistor of claim 9 wherein said resistive material lacks opposing parallel faces due to removal of a portion of said resistive material.

Assignees

• Vishay Dale Electronics Inc
• Vishay Dale Electronics Llc

Inventors

• Wyatt Todd
• Smith Clark
• Brune Rod
• Klabunde Rocky

Classifications

• H01C1/148 Primary

  the terminals embracing or surrounding the resistive element (H01C1/142 takes precedence) · CPC title

• H01C17/06

  adapted for coating resistive material on a base · CPC title

• H01C17/28

  adapted for applying terminals · CPC title

• H01C1/142 Primary

  the terminals or tapping points being coated on the resistive element · CPC title

• H01C7/001

  Mass resistors · CPC title