What is the impact of lead contamination on lead-free joints on pull and shear test results?
For small amounts of lead in SAC alloys, no difference was noticed in pull or shear test data. Gintic Singapore Consortium report showed that up to 2% by weight lead in lead-free SAC joints had no discernable negative impact. However, lead-free terminations soldered with lead-free solders are still considered the most reliable. Lead in wave soldering however can result in some fillet lifting to occur.
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