Surface Mount International Conference Proceedings


NCMS SURFACE FINISH TESTING

Author: Jim Reed
Company: Texas Instruments, Inc.
Date Published: 9/10/1996   Conference: Surface Mount International


Abstract: The NCMS PWB Surface Finishes Consortium has completed its five year program. Dozens of projects related to surface finishes and PWB solderability were performed by the team throughout the program, and some are listed in this paper. The major purpose of this paper is to summarizes the details of two of the major research projects completed by the team. The first project “Baselining and Benchmarking” describes the results of Solderability and Soldering evaluations on more that 16 PWB surface finishes. The final section gives the teams evaluations of the impact of surface finish on solder joint and wire bond mechanical strength. KEY WORDS: PWB soldering, Surface Finish, Wire Bonding



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