Electronics Forum | Mon Jul 24 11:35:42 EDT 2006 | Jimk@ics-inc.org
We have experienced a problem with tin leaching or discoloration of lead terminals on random parts on solder side of a paste/paste operation. The profile has been used on previous production runs and there doesn't appear to be any heat damage to othe
Electronics Forum | Thu Jul 27 07:50:35 EDT 2006 | davef
Send us pix
Electronics Forum | Fri Aug 12 13:17:00 EDT 2005 | patrickbruneel
To all smt neters, In many different threads I have tried to bring awareness of the dangers lead free alloys pose to the reliability of solder connections. Many times those warnings have been waved by unscientific reports (from lead free solder manu
Electronics Forum | Sun Nov 25 20:47:44 EST 2001 | Yngwie
knock!!!knock!!!Hellooo!!!!!!!
Electronics Forum | Mon Nov 26 21:03:29 EST 2001 | davef
Hehwoo, bin eatin' turkey up at mums house.
Electronics Forum | Wed Nov 21 19:45:36 EST 2001 | Yngwie
Hi Guys, I need help. I�ve a trouble with non-wetting problem on the lead of 208 pin, 20 mils pitch QFP. We are on intrusive reflow. I never faced this problem before on this product after running them for about 2 years now. This occurred on one pa
Electronics Forum | Mon Nov 26 20:15:50 EST 2001 | davef
Sounds like you are thinking correctly. I'd guess your fab has gotten "smart" and changed your bare board, as you suggest. So, you've got two choices: 1 Rework the QFP. 2 Remove the lower temperature PTH components and solder them to the board some
Electronics Forum | Tue Oct 05 12:29:28 EDT 2010 | mikesewell
It is possible to infer that the lead is lifted based on the toe fillet appearance, but it's not as reliable as say a laser or xray inspection. This is usually done by varying the light source location and or color and looking at the images resultin
Electronics Forum | Wed Oct 13 16:28:20 EDT 2010 | pvasquez
Hello Patejl, Many AOI machines have issues with lifted leads. I recall SAKI failed to catch lifted leads on my test PCB when I evaluated them. If you are looking for replacement equipment, check out MIRTEC. We now have four of these systems confi
Electronics Forum | Sun Apr 18 00:07:23 EDT 1999 | Vic Lau
I have experienced some dewetting problem on the photo-coupler's lead. No matter what types (how strong) the pre-cleaner and fluxes I used, still not completely resolve this problem. I just wonder, why this is so common to have dewetting problem on
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