Low Temperature Pb-free Solder Reliability Characterization

Idea/Definition Information
Summary: 

Background: 

This is the final presentation for the HDP User Group Project to evaluate the reliability of a bismuth/tin/silver low temperature lead free solder.

Problem: 

The purpose of the effort was to evaluate the reliability of a low temperature (170-180 °C) lead free soldering process as an alternative to the more common high temperature (250–260 ºC) process.

Approach: 

Sample assembled boards were built and tested in air to air temperature cycle.  The experimental plan, test vehicle design, assembly parameters, all test results and failure analysis are presented.