Patent US5170146A successfully refreshed from Google Patents.
US5170146A
Expired / Lapsed
US
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Leadless resistor
Assignee: Motorola Solutions Inc
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Filing: 1991-08-01
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Granted: 1992-12-08
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Expires: 2011-08-01
Abstract
Abstract A leadless electrical resistor (40), comprising a parallelepiped dielectric body (42), or chip, having a resistive film element (44) on one face. A pair of conductive terminations (46) are connected to opposite ends of the resistive element in order to form a chip resistor. A second resistive film element (54) is formed on the opposing face of the dielectric body in a direction perpendicular to the first resistor. A second pair of conductive terminations (56) are connected to opposite ends of the second resistive element (54) in order to form a second resistor on the back side of the chip. The terminations of the second resistor are on adjacent sides of the chip body compared to the terminations of the first resistor, thus forming a chip resistor (40) having two resistive elements (44 and 54) with terminations (46 and 56) on the four vertical walls of the chip.
Inventors
- 👤 Kelly A. Gardner
- 👤 Tuan K. Nguyen
- 👤 Silvia M. Viteri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:18
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/006
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
A leadless electrical resistor, comprising: a dielectric body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first resistive film element, on the first face of the dielectric body; a pair of first conductive terminations on the first and second opposed ends of the dielectric body and coupled to opposite ends of the first resistive element; a second resistive film element formed on the second face of the dielectric body and in a direction perpendicular to the first element; and a pair of second conductive terminations on the first and second opposed sides of the dielectric body and coupled to opposite ends of the second resistive element.
Claim 2
Dependent Claim
119 words
A leadless electrical resistor, comprising: a dielectric body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first resistive film element, on the first face of the dielectric body; a pair of first conductive terminations on the first and second opposed ends of the dielectric body and coupled to opposite ends of the first resistive element; a second resistive film element formed on the second face of the dielectric body and in a direction perpendicular to the first element; and a pair of second conductive terminations on the first and second opposed sides of the dielectric body and coupled to opposite ends of the second resistive element.
Claim 3
Dependent Claim
16 words
The leadless electrical resistor as described in claim 1, wherein the dielectric body is alumina ceramic.
Claim 4
Dependent Claim
15 words
The leadless electrical resistor as described in claim 1, wherein the dielectric body is silicon.
Claim 5
Dependent Claim
17 words
The leadless electrical resistor as described in claim 1, wherein the resistive elements are thick film materials.
Claim 6
Dependent Claim
17 words
The leadless electrical resistor as described in claim 1, wherein the resistive elements are thin film materials.
Claim 7
Dependent Claim
34 words
The leadless electrical resistor as described in claim 1, wherein the first and second conductive terminations are selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof.
Claim 8
Dependent Claim
18 words
The leadless electrical resistor as described in claim 1, wherein the first conductive terminations wraparound the dielectric body.
Claim 9
Dependent Claim
18 words
The leadless electrical resistor as described in claim 1, wherein the second conductive terminations wraparound the dielectric body.
Claim 10
Dependent Claim
24 words
The leadless electrical resistor as described in claim 1, wherein the first resistive element is a jumper having a resistance less than one ohm.
Claim 11
Dependent Claim
112 words
A leadless electrical resistor, comprising: a dielectric body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first resistive film element, on the first face of the dielectric body; a pair of first conductive terminations on the first end and the first side of the dielectric body, and coupled to adjacent sides of the first resistive element; a second resistive film element formed on the second face of the dielectric body; and a pair of second conductive terminations on the second end and the second side of the dielectric body, and coupled to adjacent sides of the second resistive element.
Claim 12
Dependent Claim
112 words
A leadless electrical resistor, comprising: a dielectric body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first resistive film element, on the first face of the dielectric body; a pair of first conductive terminations on the first end and the first side of the dielectric body, and coupled to adjacent sides of the first resistive element; a second resistive film element formed on the second face of the dielectric body; and a pair of second conductive terminations on the second end and the second side of the dielectric body, and coupled to adjacent sides of the second resistive element.
Claim 13
Dependent Claim
16 words
The leadless electrical resistor as described in claim 10, wherein the dielectric body is alumina ceramic.
Claim 14
Dependent Claim
17 words
The leadless electrical resistor as described in claim 10, wherein the resistive elements are thick film materials.
Claim 15
Dependent Claim
17 words
The leadless electrical resistor as described in claim 10, wherein the resistive elements are thin film materials.
Claim 16
Dependent Claim
24 words
The leadless electrical resistor as described in claim 10, wherein the first resistive element is a jumper having a resistance less than one ohm.
Claim 17
Dependent Claim
34 words
The leadless electrical resistor as described in claim 10, wherein the first and second conductive terminations are selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof.
Claim 18
Dependent Claim
19 words
The leadless electrical resistor as described in claim 10, wherein the first conductive terminations wrap around the dielectric body.
Claim 19
Dependent Claim
19 words
The leadless electrical resistor as described in claim 10, wherein the second conductive terminations wrap around the dielectric body.
Claim 20
Dependent Claim
162 words
A chip resistor, comprising: a parallelepiped alumina ceramic body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first thick film resistive element, on the first face of the body; a pair of first conductive terminations on the first and second opposed ends of the dielectric body and coupled to opposite ends of the first resistive element, said conductive terminations being selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof; a second thick film resistive element formed on the second face of the body and in a direction perpendicular to the first element; and a pair of second conductive terminations on the first and second opposed sides of the dielectric body and coupled to opposite ends of the second resistive element, said conductive terminations being selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof.
Claim 21
Dependent Claim
162 words
A chip resistor, comprising: a parallelepiped alumina ceramic body comprising; a polyhedron having first and second opposed faces, first and second opposed ends, and first and second opposed sides; a first thick film resistive element, on the first face of the body; a pair of first conductive terminations on the first and second opposed ends of the dielectric body and coupled to opposite ends of the first resistive element, said conductive terminations being selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof; a second thick film resistive element formed on the second face of the body and in a direction perpendicular to the first element; and a pair of second conductive terminations on the first and second opposed sides of the dielectric body and coupled to opposite ends of the second resistive element, said conductive terminations being selected from the group consisting of solder, gold, platinum, silver, nickel, tin, indium, lead, and combinations thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |