Electronics Forum | Mon May 03 11:20:43 EDT 2010 | mikesewell
A good guideline is keep it similar to your wave solder process, for example 2-3 sec. This assumes you're preheating the assembly. While polyimide boards are fairly robust at some point you will begin to see copper dissolution - the solder side pad
Electronics Forum | Fri Apr 30 10:50:24 EDT 2010 | dldavis
Where do I find data which shows how much dwell time is excessive in a solder fountain when install through hole connectors into a polyimide board.
Electronics Forum | Mon May 03 10:52:18 EDT 2010 | davef
We're not sure that such data is available. What guidelines does your flux supplier provide in soldering with this process?
Electronics Forum | Fri Jul 25 12:54:53 EDT 2008 | schorschimi
I am interested in pwb manual assembly time standards, including hardware mounting, component preparation, hand soldering and additional tasks. Thanks for your help
Electronics Forum | Fri Jul 30 09:59:10 EDT 2004 | Steve
Excessive Time above Liquidus will cause a solder joint to become extremely brittle. Any shock or stress to the joint can lead to a failure.
Electronics Forum | Wed Aug 04 15:27:03 EDT 2004 | Rush Fan
I might suggest that you check with your solder paste manufacturer to see what is recommended for time over reflow. Typically, I think most are between 60 and 90 seconds over 183. Also, consider the rate of cooling. The faster you cool the solder, th
Electronics Forum | Thu Jul 29 00:42:32 EDT 2004 | C.W
hello, BGA was a little excessively reflowed with dwell time(above 183C - solder paste = 63/37) over 2 min, peak temp is 218C. I inspected the BGA under X-ray and there is a little voids but within the acceptable range, i then used the Ersascope to c
Electronics Forum | Fri Nov 15 11:03:48 EST 2019 | rgduval
I think Steve is on to it. The wire is not getting hot enough to wet. Either the solderer is attempting to solder too quickly, or the PTH is connected to a ground plane. The solder sticking up through the hole leads me to think it's connected to a
Electronics Forum | Fri Jul 21 09:23:05 EDT 2017 | sumote
I am not going to give you any names of equipment manufacturers as I believe most people tend to recommend only what they are familiar with. I have my favorites as, likely, most everyone else does as well. What I will tell you is equally important.
Electronics Forum | Thu Nov 14 03:12:42 EST 2019 | jefri_simorangkir
hi Team, observed excess solder after assembly jumper with manual solder method. I already try to duplicate the phenomenon with adding more solder tin/wire,adding more time for solder but not found same condition I have attached the image for the
