Author:
Xu Meng,Sun Fenglian,Pan Zhen,Liu Yang
Abstract
Purpose
The purpose of this paper is to study the temperature cycling reliability of Sn-5Sb-0.5Cu-0.1Ni-0.5Ag/Cu micro solder joints compared with Sn-5Sb/Cu and SAC305/Cu micro solder joints, which has important engineering and theoretical significance for the research of micro solder joint reliability. This paper also aims to provide guidance for the selection of solder for third-generation semiconductor power device packaging.
Design/methodology/approach
The shear strength, plasticity, bulk solder hardness and creep performance of three kinds of micro solder joints before and after temperature cycling were studied by nanoindentation and micro shear experiments. Scanning electron microscopy and energy dispersive spectrometry were used to analyze the fracture mode, fracture position and compound composition of the solder joints.
Findings
The bulk solder hardnesses and shear strengths of Sn-5Sb-0.5Cu-0.1Ni-0.5Ag/Cu solder joints were higher than those of Sn-5Sb/Cu and SAC305/Cu solder joints before and after temperature cycling. The indentation depth, creep displacement and creep rate of bulk solders of Sn-5Sb-0.5Cu-0.1Ni-0.5Ag/Cu solder joints were the smallest compared with those of Sn-5Sb/Cu and SAC305/Cu solder joints after the same number of cycles. In addition, the fracture mode and fracture position of the micro solder joints changed before and after temperature cycling.
Originality/value
A new type of solder was developed with excellent temperature cycling performance.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,General Materials Science,Electrical and Electronic Engineering,Condensed Matter Physics,General Materials Science
Reference18 articles.
1. Microstructural evolution and tensile properties of Sn-5Sb solder alloy containing small amount of Ag and Cu;Journal of Alloys and Compounds,2011
2. Shear strength, fracture mechanism and plastic performance of Cu/Sn5Sb–xCuNiAg/Cu solder joints during thermal aging;Journal of Materials Science: Materials in Electronics,2019
3. Effect of Cu, Ag on the microstructure and IMC evolution of Sn5Sb-CuAgNi/Cu solder joints;Materials Research Express,2020
4. Mechanical properties and toughness of carbon aerogel/epoxy polymer composites;Journal of Materials Science,2015
5. Reliability issues of lead-free solder joints in electronic devices;Science and Technology of Advanced Materials,2019
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献