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Electronics Forum | Thu Aug 24 13:21:57 EDT 2000 | Dave F
Please compare indium (In) / Tin (Sn) paste properties in terms of reflow profile, creep, grain structure, etc with other major no-lead solder formulations.
Electronics Forum | Thu Aug 24 08:59:38 EDT 2000 | Eugene Smelik
Dr. Lee, For Pb-free solders, will the reflow profile be similar to that of Sn/Pb, with an flux activation plateau before going to peak reflow, or will the profile be more linear in nature? Are there advantages/disadvantages to either profile for P
Electronics Forum | Wed Aug 23 12:11:05 EDT 2000 | Dave F
Dr. Lee: What are the issues around dispensing solder paste on 20 pitch SMT device pads?
Electronics Forum | Wed Aug 23 09:16:42 EDT 2000 | Dave F
Dr. Lee: How do the metallurgical properties of solder change during a second reflow. Please provide detail on this phenomenon.
Electronics Forum | Wed Aug 23 08:50:04 EDT 2000 | Dave F
Dr. Lee: We had a discussion on the forum recently and I wanted to get your input. What is the best method(s) for elimating (reducing) no-clean solder paste flux from splattering on gold interconnect fingers on a PCA?
Electronics Forum | Wed Aug 23 08:05:50 EDT 2000 | Eugene Smelik
Dr. Lee: I have read that fillet lifting can be exacerbated by certain types of Pb-free solder. Can you explain which alloys cause this and why? Thanks! Gene Smelik Cookson Performance Solutions
Electronics Forum | Tue Aug 22 09:30:18 EDT 2000 | gdiepstraten
With the introduction of new lead-free alloys and higher temperatures to meet their specifications, can we expect different and/or more residues in the reflow soldering process?
Electronics Forum | Thu Jul 20 18:30:08 EDT 2000 | mbourke
What is the preferred method of cleaning misprinted double sided No-Clean boards which are assembled on side 1 ? What type of equipment is being used ? What solvents / detergents work well for a variety of solder pastes / glues ?
Electronics Forum | Thu Jul 20 16:32:01 EDT 2000 | Bob Willis
I guess you are refering to lead free solders. If you read through the draft directive the plans are defined but not who will do the monitoring. Some companies do have the ability to do this sort of task but not all. The latest documents are availab
Electronics Forum | Thu Jul 20 12:22:57 EDT 2000 | newf
How are Component manufactuers addressing the PB free solder inititive? Since I am told higher processing Temps will be required to reflow the pb-free alloy.
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