Compliant S-leads for chip carriers
US4827611A · kind A · utility
44Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49169
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compliant S-shaped lead for resiliently supporting an integrated circuit chip package in spaced relation generally parallel to a printed circuit board. The S-lead bends and twists to absorb forces which would otherwise be exerted on solder joints due to temperature cycling and vibration. The symmetrical S-lead self-centers on both the package and PC board to provide minimum stress. The leads are held by a support strip for connection to the chip carrier. Thereafter, the support strip is removed and the carrier positions the leads for connection to the circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.