New Lead-Free Alloy for High Reliabilty, High Operating Temperature Applications
Authors: Pritha Choudhury, Morgana Ribas, Anil Kumar, Sutapa Mukherjee, Siuli Sarkar, Ranjit Pandher, Rahul Raut, Bawa Singh, and Ravi Bhatkal Company: Alpha Date Published: 5/13/2014
ICSR (Soldering and Reliability)
Abstract: In this paper, we present details of a very systematic study undertaken for the development of lead-free and RoHS compliant alloy for high operating temperature applications. Currently, Innolot is one of the most suitable alloy for such ultra-high reliability requirements, such as, Automotive and high CTE mis-match applications. The aim of this study was to develop a new lead-free alloy with improved thermal and electrical properties when compared to standard Innolot. This paper summarizes basic alloy properties, including mechanical, thermal and electrical properties of a set of these new lead-free alloys. Overall, the new alloys present significant enhancements in metallurgical properties and soldering properties for SMT assembly.
Lead-free, High Reliability, CTE Mismatches, Solder Alloy