Abstract
In this study, the effect of series Pb content on shear performance of SnAgCu-xSnPb/Cu solder joint was investigated. It was found that Pb content influenced the BGA solder joint shear strength significantly. The shear strength as a function of Pb content shows a parabola trend. The shear strength increased with Pb content increased from 0% to 9.22%. Then the shear strength value kept at a high level from 9.22% to 26.49%. However, this trend stopped when Pb content is 29.42% and the shear strength began to decrease. The failure mode is strongly associated with fracture energy. When Pb was imported into Sn3.0Ag0.5Cu/Cu solder joint, the fracture energy (shear work) of solder joint shear test decreased. When Pb content ranges from 4.67% to 37% the fracture energy seemed no obvious difference. Pb content influenced the solidification sequence when the solder joint was cooling down. The solidification sequence is closely related to the microstructure of mixed solder joint.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
