关键词: 硅铝丝键合, 拉脱力, 理论分析, 参数化建模, DOE实验

Abstract: Wire bonding strength is usually examined by wire pull test. To study the stress and strain during pull test for AlSi wire bonding, theoretical analysis, finite element analysis, and experiment verification are conducted. Bonding parameters effect and the initial plastic strain effect are investigated. The pulling force increases with the rising of the test hook, then decreases with the wire necking. The closer to the first bond horizontally, the greater the maximum pull force. With the same horizontal wire span, the pull force increases with the increase of loop height. The finite element analysis gives an exactness of 95% compared to the experiment results. This is a quick and exact evaluation method for the AlSi wire bonding.

Key words: silicon-aluminum (AlSi)wire bonding, pull force, theoretical analysis, parametric modeling, DOE