Electrical components and assemblies
US4864079A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A surface-mounted electrical component has rectangular section leads that project outwardly from the edges of the component body. The leads are bent down towards the surface of the substrate and are twisted through 90 degrees about their length to make the leads compliant in a direction transverse of their width where they emerge from the body. The lower end of the leads are straight and untwisted, making a vertical butt solder joint with contact pads on the substrate. The twisted region of the leads are treated, such as by nickel plating, to render them non-wetted by solder. Because of the greater spacing possible between the contact pads, conductive tracks can extend through gaps between the contact pads beneath the body of the component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.