Referenced Items are not available for this document.
Epoxy underfill is often required to enhance the reliability of flip-chip interconnects. This study evaluates the flow of typical epoxy underfill materials between parallel plates driven by capillary action. An exact model was developed to understand the functional relationship between flow distance, flow time, separation distance, surface tension, and viscosity for quasisteady laminar flow between parallel plates. The model was verified experimentally with a typical underfill material. The measured values of flow distance agreed well with the exact model. A new material parameter, the coefficient of planar penetrance, is introduced. This parameter measures the penetrating power of a liquid between parallel plates driven by capillary action. The effectiveness of gravity and vacuum as flow rate enhancements is explored
Published in:
Components, Packaging, and Manufacturing Technology, Part C, IEEE Transactions on
(Volume:19
,
Issue:
2
)
Date of Publication: Apr 1996
- Page(s):
- 133 - 137
- ISSN :
- 1083-4400
- INSPEC Accession Number:
- 5343474
- Digital Object Identifier :
- 10.1109/3476.507149
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Apr 1996
- Sponsored by :
- IEEE Components, Packaging, and Manufacturing Technology Society
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