Summary form only given. The efforts taken to date as part of the USAF Manufacturing Technology for Advanced Data and Signal Processing program to enhance significantly solder-joint reliability are described. The proposed critical factors which affect solder-joint reliability and the methodology taken to demonstrate reliability enhancements are detailed. In order to produce solder joints meeting the desired solder-joint geometry, new methods of solder deposition were developed. Conventional surface-mount applications use solder paste as a vehicle for applying solder to form the electrical interconnection; however, solder paste was not a viable method of achieving the desired joint geometries. Instead, a novel process was developed using noneutectic solder preforms and a vapor-phase reflow process. This process also offered other significant advantages over the use of solder paste. Improvements in solder joint-to-joint uniformity were also observed, and an improved solder-joint repair process was developed.


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    Title :

    Surface mount technology in high-reliability applications; military airborne applications


    Additional title:

    Die Oberflaechenmontage fuer Anwendungen mit hoher Zuverlaessigkeit bei der Luftwaffe


    Contributors:


    Publication date :

    1988


    Size :

    1 Seite



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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