摘要
超声功率是影响粗铝丝引线键合强度的最主要因素之一.在尽量排除其他干扰因素的情况下,通过实验比较了11种不同超声功率条件下,粗铝丝引线键合的结果,观察到了超声功率对粗铝丝引线键合强度的影响:在超声功率较小情况下(超声功率比为20%～30%),增大超声功率有助于提高键合强度;在超声功率较大的情况下(超声功率比为45%～70%),增大超声功率反而会降低键合强度,出现过键合的情况;只有当超声功率适中时(超声功率比为35%～40%),才能获得稳定且满意的键合强度.分析了验现象的产生原因.
The influences of ultrasonic power on heavy aluminum wire wedge bonding strength were investigated. 11 groups of experiments were carried out under different power conditions while other factors were omitted. The experimental results show that: in the small ultrasonic power rate conditions (about 20%-30%), with the power increasing, the bonding quality enhances correspondingly; however, in the large ultrasonic power rate conditions (about 45%-70%), the bonding quality decreases correspondingly and over bonding happens. Only when the ultrasonic power rate in a moderate conditions (about 35%-40%), can good and stabilized bonding quality be acquired.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2005年第10期919-923,共5页
China Mechanical Engineering
基金
国家自然科学基金资助重大项目(50390064)
国家重点基础研究发展计划资助项目(2003CB716202)
关键词
超声引线键合
超声功率
过键合
粗铝丝
ultrasonic wire bonding
ultrasonic power
over bonding
heavy aluminum wire
