Electronics Forum | Wed Aug 22 02:01:03 EDT 2007 | lococost
Have you tried the same setup with your leaded paste? Your lf paste might have different cold slump characteristics.
Electronics Forum | Fri Aug 24 09:29:08 EDT 2007 | jgrootkoerkamp
Solder balls with wave soldering can have different causes. The two most important are the solderresist and the flux. I have similar problems, after changes the flux type 90% off all solderballs are gone. KR, Joris Groot koerkamp
Electronics Forum | Thu Oct 04 00:54:58 EDT 2007 | accurex
What ist the advantage of split axis with Rack and Pinion Drive and the latest Linear drive based placement system.
Electronics Forum | Fri Oct 05 10:59:22 EDT 2007 | patrickbruneel
I�ve stayed out of the lead-free discussions as much as possible. But it�s great to note that someone (Mike) suggests a different color.
Electronics Forum | Tue Oct 23 14:24:04 EDT 2007 | ratsalad
Who is your stencil vendor? I've used three different vendors for Pb-free green frame stencils and NONE of them charged extra.
Electronics Forum | Sun Nov 04 05:11:14 EST 2007 | omidjuve
can you send me the articles about the high frequency boards issues with different types of solder paste alloy because i can`t find any free document about this article
Electronics Forum | Mon Oct 22 10:51:48 EDT 2007 | davef
You say, "we have encountered solder wicking on components ..." We expect to see wicking on solder connections. Maybe we're just using different terminology. Please describe the problem that you're seeing.
Electronics Forum | Wed Oct 24 08:20:03 EDT 2007 | hussman
Actually, it applies to conditions from cold to hot AND hot to cold. The measure of T is graphed against time. Time is what you measure the difference of temperature against. I was hoping to influence this engineer to find this out on his own, but
Electronics Forum | Wed Oct 24 10:48:47 EDT 2007 | slthomas
Actually I didn't see anything saying this person was an engineer, but I digress.... In this case this person may very well be referring to the delta t across space rather than over time, as in different locations on a pcb that's being profiled.
Electronics Forum | Thu Nov 01 21:05:31 EDT 2007 | davef
no inspection * Failing to meet expectations => inspection In asking if you observed the problem at incoming inspection, we should have asked the question differently. Have you observed the problem in stock items, prior to assembly?
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