Abstract
The effect of aging at 150°C on the microstructure and shear strength of SnAg/Cu surface mount solder joint has been investigated with comparison to 62Sn36Pb2Ag/Cu. It is found that the diffusion coefficient of intermetallic compounds at SnAg/Cu interface is smaller than that of intermetallic compounds at SnPbAg/Cu interface at 150°. The shear strength of SnAg solder joint is higher and decreases at a smaller rate during aging compared to that of SnPbAg solder joint. The fracture surface analysis shows that as the aging time increases, the fracture takes place along the solder/Cu6Sn5 interface with an extension toward the Sn−Cu intermetallic layer.
Similar content being viewed by others
References
M. McCormack, S. Jin, C.W. Kammlott, and H.S. Chen, Appl. Phys. Lett. 63, 5 (1993).
W.L. Winterbottom, JOM 45, 20 (1993).
S. Jin, JOM 45, 13 (1993).
M. McCormack and S. Jin, J. Electron. Mater. 23, 635 (1994).
C.M. Miller, I. Anderson, and J.K. Smith, J. Electron. Mater. 23, 595 (1994).
C.H. Raeder, L.E. Felton, V.A. Tanzi, and D.B. Knorr, J. Electron. Mater. 23, 611 (1994).
T.L. Ylijoki, H. Steen, and A. Forsten, IEEE Trans. Compon. Pkg. Manuf. Technol. C20, 194 (1997).
D. Shangguan, A. Achari, and W. Green, IEEE Trans. Compon. Pkg. Manuf. Technol. B17, 603 (1994).
T.B. Massalski, Binary Alloy Phase Diagrams, 2nd ed. (Materials Park, OH: ASM Int., (1990), p. 96.
W.J. Tomlinson and A. Fallylove, J. Mater. Sci. 27, 5777 (1992).
J.S. Hwang and R.M. Vargas, Soldering & Surface Mount Technol. 5, 38 (1990).
S.K. Kang and A.K. Sarkhel, J. Electron. Mater. 23, 70 (1994).
D.R. Flanders, E.G. Jacobs, and R.F. Pinizzotto, J. Electron. Mater. 26, 883 (1997).
S.K. Kang, R.S. Rai, and S. Purushothaman, J. Electron. Mater. 25, 1113 (1996).
S.W. Chen and Y.W. Yen, J. Electron. Mater. 28, 1203 (1999).
W. Yang and R.W. Messler, J. Electron. Mater. 23, 765 (1994).
P.T. Vianco, P.F. Hlava, and A.C. Kilgo, J. Electron. Mater. 23, 583 (1994).
Y. Wu, J.A. Sees, C. Pouraghabagher, L.A. Foster, J.L. Marshall, E.G. Jacobs, and R.F. Pinizzotto, J. Electron. Mater. 22, 769 (1993).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ahat, S., Sheng, M. & Luo, L. Microstructure and shear strength evolution of SnAg/Cu surface mount solder joint during aging. J. Electron. Mater. 30, 1317–1322 (2001). https://doi.org/10.1007/s11664-001-0118-8
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11664-001-0118-8