Indium Corporation Regional Product Manager Wisdom Qu will present at the iNEMI Workshop on Automotive Electronics on October 13, in Shenzhen, China.
In her presentation Low-Voiding, High-Reliability, Lead-Free Solder Paste Design for Automotive Applications, Qu will examine the results of a test comparing a solder paste based on a mixed powder technology, containing Sn/Ag/Cu/Bi/Sb/In in the final joint, with SAC305 and other high-reliability pastes. The voiding from a QFN package was consistently lower than 15%, which is better than SAC305. TCT reliability under AEC Grade 1 for BGA192, QFN, and chip-resistor also demonstrated improved reliability compared to SAC305 and the other high-reliability alloys.
With the rapid growth of the 5G and EV markets, the electronics industry has higher requirements for product reliability, with the extended lifetime under AEC Grade 1 or even Grade 0 conditions. Traditional high-reliability solder alloys contain five or six elements or even more, which strengthens through solid solution and/or precipitate solution.
“The microstructural complexity of the multi-element high-reliability alloys makes the melting behavior complicated, which may lead to worsened voiding performance compared to traditional SAC305 after reflow,” said Qu. “Designing the solder paste with mixed powder technology can reduce voiding by using at least one ternary or quaternary alloy powder constituent in the paste while the final joint is still a quinary or even senary alloy system.”
As Regional Product Manager for PCB Assembly Solder Paste in Asia, Qu facilitates business development and growth of PCB assembly product offerings, focusing on solder paste. A certified SMT process engineer, she has more than 17 years of experience in surface mount technology and earned a degree in mathematics from Hubei Radio and Television University in China.
关于铟泰铟泰公司
铟泰公司 是面向全球电子、半导体、薄膜及热管理 顶级材料精炼商、冶炼商、制造商和供应商。产品包括焊料和助焊剂；硬钎焊；热界面材料；溅射靶材；铟、镓（Ga）、锗和锡等金属及化合物；以及NanoFoil 。公司成立于1934年，拥有全球技术支持网络，并在中国、德国、印度、马来西亚、新加坡、韩国、英国和美国设有工厂。
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