Transcription of Kester - Lead-free SMT Soldering Defects How to Prevent …
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1547 N. Trooper Road P. O. Box 1117 Worcester, PA 19490-1117 USA Corporate Phone: 610-825-4990 Sales: 800-832-4866 or 610-941-2400 Fax: 800-854-8665 or 610-828-5623 Web: Lead-free SMT Soldering Defects How to Prevent Them Our thanks to Kester for allowing us to reprint the following article. By Peter Biocca, Key Accounts Technical Manager, Kester Tin-Silver-Copper alloys are the primary choice for Lead-free SMT assembly. Although there are other options available such as alloys containing bismuth or indium and other elements, tin-silver-copper solders, also known as SAC alloys are by far the most popular. They are used by approximately 65% of users, as last surveyed in 2011.
Lead-free SMT Soldering Defects – How to Prevent Them ... Lead-free solder pastes designed for lead-free alloys and also alloy specific will function best and help prevent solder defects. Typical defects associated with lead-free reflow soldering are:
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