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PB-FREE SOLDER FOR PORTABLE AND HIGH TEMPERATURE ELECTRONIC DEVICES

机译:便携式和高温电子设备的无铅焊料

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摘要

As the European Union's (EU's) RoHS directives came into force on July 2006, the transition to lead-free solder has occurred at a rapid pace. Many manufacturers have adopted Sn/Ag/Cu (SAC)-type solder alloys as a representative Pb-free solder to substitute the conventional Tin-Lead (Sn-Pb) system with many reliability anomalies unanswered. This paper is an effort to compare solder reliability between the two most popular Pb-free solders SAC305 and SAC 105 for temperature cycling and drop test. Solder reliability for drop test and temperature cycling were determined experimentally and verified using finite element simulations. The results were interpreted and the recommendations for the right Pb-free solder were made for practical applications.
机译:随着欧盟(RoHS)指令于2006年7月生效,向无铅焊料的过渡正在迅速进行。许多制造商已采用Sn / Ag / Cu(SAC)型焊料合金作为代表性的无铅焊料,以替代传统的锡铅(Sn-Pb)系统,该系统存在许多无法解决的可靠性异常。本文致力于比较两种最流行的无铅焊料SAC305和SAC 105在温度循环和跌落测试中的焊料可靠性。实验确定了跌落测试和温度循环的焊锡可靠性,并使用有限元模拟对其进行了验证。对结果进行了解释,并针对实际应用提出了正确的无铅焊料建议。

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