@inproceedings{c33cb9905df742168f0f5519662445a2,
title = "Material and structural optimization of fatigue life of PBGA under temperature cycling",
abstract = "Working environment of electronic chips has the characteristics of temperature cycling. This paper establishes a three-dimensional finite element model for coupled thermal-mechanical analysis in ABAQUS to simulate the deformation behavior of solder joints in the plastic ball grid array (PBGA) package under temperature cycling. The cyclic temperature is from 20°C to 125°C with the ramping rate of 105°C/0.2 analysis time and the dwell temperature is 20°C and 125°C. The constitutive models of the incorporated materials especially for Sn-3.0Ag-0.5Cu (SAC305) solder are assigned directly in the 3D FE model, which are scaled according to the applied temperature using the available experiment data in the literature. Furthermore, a modified Coffin-Manson equation is used to establish a fatigue model based on the shear plastic strain. By varying the important factors such as the solder joint height, temperature ramping rate, coefficient of thermal expansion of solder joint and offset distance, the corresponding effect on the fatigue life of the solder joint under thermal cycling is numerically investigated. After comparing the various parameters of the PBGA package, some suggestions are made to emphasize the optimal combination of material properties and structural dimensions.",
keywords = "fatigue life, PBGA, solder joint, thermal cycling",
author = "Wenjie Wang and Yao Yao and Xu Long and Zhenghu Zhu",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 19th International Conference on Electronic Packaging Technology, ICEPT 2018 ; Conference date: 08-08-2018 Through 11-08-2018",
year = "2018",
month = oct,
day = "2",
doi = "10.1109/ICEPT.2018.8480462",
language = "英语",
series = "Proceedings - 2018 19th International Conference on Electronic Packaging Technology, ICEPT 2018",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "477--481",
editor = "Fei Xiao and Jun Wang and Lin Chen and Tianchun Ye",
booktitle = "Proceedings - 2018 19th International Conference on Electronic Packaging Technology, ICEPT 2018",
}