Epoxy washer for retention of inverted SMT components
US6791189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Dec 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49149
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus to retain an assembled component on one side of a double-sided printed circuit board during reflow of other components subsequently positioned onto an opposite side of the double-sided printed circuit board and methods for manufacturing and using the same. Being formed from an epoxy material, the retainer is configured to be coupled with a component, which is then positioned onto a printed circuit board. During a subsequent solder reflow stage, an ambient temperature surrounding the printed circuit board increases, and the epoxy material is configured to enter a semi-liquid state, flowing onto, and adhering with, the printed circuit board. Upon reaching a typical solder reflow temperature, the liquefied epoxy material is configured to cure or harden, adhesively coupling the component with the printed circuit board. Thereby, the component is inhibited from separating from the printed circuit board when the printed circuit board is subsequently inverted, populated, and reflowed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.