Toward a Pb-Free Consensus


Some time ago, I mentioned that I was working on a consensus of the status of Pb-free/RoHS-compliant assembly. My hope is to find data and facts that will support the consensus. I am making progress, but at this time I would like to share the subtopics in the consensus. Look them over and see what you think:

1.       Was/is lead-free electronics/RoHS needed to protect the environment?

2.      Is Pb-free solder easier and safer to recycle than Pb-containing solder?

3.      How has the increased use of tin and silver affected their supply and price?

4.      How much did it cost to implement Pb-free/RoHS-compliant electronics?

a.      What is the cost adder to a typical Pb-free product?

5.      What are the process challenges of Pb-free assembly? Are these challenges being addressed? If so, how?

6.        What is the reliability of Pb-free vs, leaded electronics for commercial applications (e.g., 0°C to 100°C thermal cycle, drop shock, etc.)?

7.        What is the reliability of Pb-free vs leaded electronics for harsh environment/military applications (e.g., -55°C to 125°C thermal cycle, other Mil stress tests)?

8.      What is the threat of tin whiskers, tin pest and other similar Pb-free related reliability phenomena?

9.      What is the status and need for halogen-free assembly?

Help me by suggesting topics that I have left out.

Best wishes,

Dr. Ron

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About Dr. Ron

Materials expert Dr. Ron Lasky is a professor of engineering and senior lecturer at Dartmouth, and senior technologist at Indium Corp. He has a Ph.D. in materials science from Cornell University, and is a prolific author and lecturer, having published more than 40 papers. He received the SMTA Founders Award in 2003.