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May 15, 2006
What alloy do you recommended for filters used with SAC305?
We are an electronic manufacturer of RF and Microwave Filters. Before RoHS we soldered our products using Sn95/Sb5 with a melting point 232-240ºC. Our customer typically used Sn63 to solder our products on their printed circuit assemblies. Now with RoHS our customers may use SAC305 with a melting point 217-220ºC, very close to Sn95/Sb5 thus we need to use higher solder alloy in our product. What alloy can you recommended for our products?
S.D.
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Ask the Experts Comments
May 18, 2006
High lead (>85%) solders are still exempt under the RoHS legislation. This has been the choice of most companies building primary interconnections and consider about reflow during assembly operations.
Dr. Craig D. Hillman, CEO & Managing Partner
DfR Solutions
chillman@dfrsolutions.com
 Dr. Hillman's specialties include best practices in Design for Reliability, strategies for transitioning to Pb-free, supplier qualification (commodity and engineered products), passive component technology and printed board failure mechanisms. Dr. Hillman has over 30 publications and has presented on a wide variety of reliability issues to over 150 companies and organizations.
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