Electronics Forum | Thu Jul 20 16:45:37 EDT 2000 | Bob Willis
Many machines for both reflow and wave are quite capable to run lead free but you are generally talking about the high end systems not the light weight units. Bob
Electronics Forum | Thu Jul 23 21:27:35 EDT 1998 | Stoney Tsai
Hi, We have encountered one serious problem that heavy packages falling down during second side reflow, especially for PLCC 84. I believe it caused by temperature profile setting. Any good suggestion would be highly appreciated! Stoney Tsai
Electronics Forum | Tue Sep 04 11:26:12 EDT 2001 | Jean Michel
During the solderin of a double side board, how can I calculate the maximum weight of a component I can put in the first side to avoid the component fall down in the oven (depending on the soler join surface) ? Are there some rules ?
Electronics Forum | Thu Nov 01 17:42:45 EST 2001 | davef
Wolfgang is correct. Search the fine SMTnet Archives to find information on the component weight versus pad size during adhesiveless double sided reflow. Do not mess with different solder materials.
Electronics Forum | Thu Feb 07 09:07:10 EST 2002 | fmonette
Dason, Please be aware that weight gain is only a very crude estimate of the component moisture content. This is only accurate when the moisture is uniformly distributed inside the component (which is actually never). This measurement is usually no
Electronics Forum | Thu Apr 11 12:10:14 EDT 2002 | jax
Different Solder types are not needed. Surface tension will hold most. Plenty of info in the archives about reflow profiles, weight limitations, etc...
Electronics Forum | Tue Jul 02 12:10:06 EDT 2002 | fmonette
Dason, Just a word of caution about your experiment. Evaluating moisture content by weight gain is a very simplistic model, based on the assumption that the moisture content is uniform across the package. In fact, recent technical papers have cl
Electronics Forum | Wed Oct 02 21:01:20 EDT 2002 | davef
I'm looking for a turtle ~5" in diameter with no fussy lineage to use as a paper weight. Are you too far West?
Electronics Forum | Mon Dec 16 09:59:57 EST 2002 | blnorman
We had the same problem and solution with one of our components on one of our lines. Don't know for sure what the "weight" was that they used, but it did solve the problem. Since then the same line is looking a putting an adhesive on the part to ho
Electronics Forum | Tue Jan 06 19:05:15 EST 2004 | MP
Is there other Solder Recovery System manufacturers besides Earth-Tronics/Technical Device? What is a typical solder recovery rate? Is it sound fair to recover 60% of solder from dross by weight? thanks Matthew
