Method of protective coating BGA solder alloy spheres
US6506448B1 · kind B1 · utility
20Cited by
10References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | May 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/3485
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of efficiently coating surfaces of solder alloy spheres by a vapor deposition process using a solvent-based coating solution including a low viscosity organic material and at least one solute, such as a surfactant. The method surface coats solder alloy spheres to minimize or eliminate physical and chemical damage to surfaces of spheres prior to use in surface mounting applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.