DOI: 10.1063/1.114767. Rate of consumption of Cu in soldering accompanied by ripening

Rate of consumption of Cu in soldering accompanied by ripening

10.1063/1.114767

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

What is the rate of consumption of Cu in soldering reactions has been a critical question in electronic packaging technology. The Cu films are consumed by Cu–Sn compound formation. Because the Cu thickness is limited and the rework of a solder joint requires a layer of unreacted Cu, the loss of Cu in soldering must be under control. At the solder interface, Cu–Sn intermetallic compounds do not form layered structures. Rather, the Cu6Sn5 phase grows as scalloplike grains into the molten solder and ripening occurs between the grains. Therefore, it has been difficult to determine the compound growth rate, and in turn the Cu consumption rate. Using cross-sectional and top-polished samples, we have measured the total volume of Cu–Sn intermetallic compounds formed between eutectic SnPb alloy and Cu substrate as a function of reflow time and temperature. We have deduced that after 1 min reflow, for example, the thickness of Cu consumed was about 0.36, 0.47, and 0.69 μm at 200, 220, and 240 °C, respectively.

Bibliography

Kim, H. K., & Tu, K. N. (1995). Rate of consumption of Cu in soldering accompanied by ripening. Applied Physics Letters, 67(14), 2002â2004.

Authors 2

H. K. Kim (first)
K. N. Tu (additional)

References 16 Referenced 108

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{'key': '2024020309411356600_r10', 'first-page': '579', 'article-title': 'Phys. Rev. B', 'volume': '28', 'year': '1983'} / Phys. Rev. B (1983)
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{'key': '2024020309411356600_r12', 'first-page': '403', 'article-title': 'Mater. Res. Soc. Symp. Proc.', 'volume': '19', 'year': '1983'} / Mater. Res. Soc. Symp. Proc. (1983)
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{'key': '2024020309411356600_r16', 'first-page': '286', 'article-title': 'IBM J. Res. Dev.', 'volume': '13', 'year': '1969'} / IBM J. Res. Dev. (1969)

Dates

Type	When
Created	23 years ago (July 26, 2002, 9:40 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 4:41 a.m.)
Indexed	1 month, 4 weeks ago (June 24, 2025, 7:28 a.m.)
Issued	29 years, 10 months ago (Oct. 2, 1995)
Published	29 years, 10 months ago (Oct. 2, 1995)
Published Print	29 years, 10 months ago (Oct. 2, 1995)

Funders 0

None

BibTeX

@article{Kim_1995, title={Rate of consumption of Cu in soldering accompanied by ripening}, volume={67}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.114767}, DOI={10.1063/1.114767}, number={14}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Kim, H. K. and Tu, K. N.}, year={1995}, month=oct, pages={2002–2004} }

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