Via intersect pad for electronic components and methods of manufacture
US6509530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jun 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49169
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To mount electronic components on a printed circuit board (PCB), the electrical contacts of the components are coupled to PCB bonding pads that are intersected by via pads. To minimize various defects encountered during solder reflow, while concurrently minimizing PCB area and manufacturing costs, the via pads are formed so that the via holes substantially avoid underlying the solder fillets coupling the component contacts to the PCB bonding pads. In one embodiment, the via pads are formed in the inter-pad space beneath the component; in another embodiment they are offset from the bonding pads. A substrate, an electronic assembly, and an electronic system are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.