US5442145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Input/output terminal for electronic circuit device
Assignee: Niterra Co Ltd
•
Filing: 1993-10-12
•
Granted: 1995-08-15
•
Expires: 2013-10-12
Abstract
Abstract A terminal for an electric circuit device, comprises a copper core, a gold (Au) layer provided over the copper core, and a nickel (Ni) layer having the thickness of 1.5 mu m or less, provided under the gold (Au) layer. In another embodiment, the core is made of an alloy containing (Ni) and covered by a metallized surface layer made of copper.
Inventors
- 👤 Ryuji Imai
- 👤 Toshikatsu Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:19
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
39 words
A terminal for an electrical circuit device, comprising: a metal core; a gold (Au) layer provided over said metal core; and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 2
Dependent Claim
39 words
A terminal for an electrical circuit device, comprising: a metal core; a gold (Au) layer provided over said metal core; and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 3
Dependent Claim
15 words
A terminal according to claim 1, wherein said metal core is made of copper (Cu).
Claim 4
Dependent Claim
15 words
A terminal according to claim 1, wherein said nickel (Ni) layer is formed by plating.
Claim 5
Dependent Claim
46 words
A terminal for an electrical circuit device, comprising: a metal core covered by a metalized surface layer; a gold (Au) layer provided over said metallized surface layer; and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 6
Dependent Claim
46 words
A terminal for an electrical circuit device, comprising: a metal core covered by a metalized surface layer; a gold (Au) layer provided over said metallized surface layer; and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 7
Dependent Claim
28 words
A terminal according to claim 4, wherein said metal core is made of an alloy containing nickel (Ni), and said metallized surface layer is a copper (Cu) layer.
Claim 8
Dependent Claim
80 words
An electric circuit device comprising: an insulating substrate; electric wiring installed in and on said insulating substrate; an external pad installed on said insulating substrate and electrically connected to said wiring; a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core, a gold (Au) layer provided over said metal core, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold layer.
Claim 9
Dependent Claim
80 words
An electric circuit device comprising: an insulating substrate; electric wiring installed in and on said insulating substrate; an external pad installed on said insulating substrate and electrically connected to said wiring; a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core, a gold (Au) layer provided over said metal core, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold layer.
Claim 10
Dependent Claim
15 words
A terminal according to claim 6, wherein said metal core is made of copper (Cu).
Claim 11
Dependent Claim
15 words
A terminal according to claim 6, wherein said nickel (Ni) layer is formed by plating.
Claim 12
Dependent Claim
89 words
An electric circuit device comprising: an insulating substrate; an electric wiring installed in and on said insulating substrate; an external pad installed on said insulating substrate and electrically connected to said wiring; a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core covered by a metallized surface layer, a gold (Au) layer provided over said metallized surface layer, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 13
Dependent Claim
89 words
An electric circuit device comprising: an insulating substrate; an electric wiring installed in and on said insulating substrate; an external pad installed on said insulating substrate and electrically connected to said wiring; a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core covered by a metallized surface layer, a gold (Au) layer provided over said metallized surface layer, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold (Au) layer.
Claim 14
Dependent Claim
28 words
A terminal according to claim 9, wherein said metal core is made of an alloy containing nickel (Ni), and said metalized surface layer is a copper (Cu) layer.
Claim 15
Dependent Claim
57 words
A terminal structure comprising: a conductive pad; and a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core, a gold (Au) layer provided over said metal core, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold layer.
Claim 16
Dependent Claim
57 words
A terminal structure comprising: a conductive pad; and a terminal; and solder means for joining said terminal to said pad and containing gold (Au); said terminal having a metal core, a gold (Au) layer provided over said metal core, and a nickel (Ni) layer having the thickness of 1.5 μm or less, provided under said gold layer.
References Cited (Backward Citations)
JPS60170294A
Cited
JPS6181659A
Cited
JPS648318A
Cited
US5019944A
Cited
JPH02101545A
Cited
JPH02104647A
Cited
US5041901A
Cited
US5332869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-14 | 1999-02-13 | 1999-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-14 | 2003-02-13 | 2003-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-14 | 2007-02-13 | 2007-08-15 | $7700.00 | Window Closed / Lapsed |