Electronics Forum | Tue Nov 27 19:52:08 EST 2001 | davef
Search the fine SMTnet Archives on the topic to get started. For instance: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=1861&#Message7671&
Electronics Forum | Mon Sep 10 11:13:47 EDT 2007 | russ
Aren't the solder balls a result of the blowholes? you know the solder that came from the blowholes is now the solderballs on the resist! hahaha :-) Russ
Electronics Forum | Fri May 04 10:10:18 EDT 2018 | donnie15
Thanks for your response, I changed the attachment to a PDF. It will be easy enough to set up if we need to do this. I was hoping the test was a little more formal and documented but quick and dirty evaluation have their place as well.
Electronics Forum | Wed Dec 08 17:58:44 EST 1999 | Dave F
Dave: You should see a solder smudge on the gold plating where the ball was attached, if there is (was) solder reflow during either the (1) BGA fabrication, (2) your BGA attach, and / or (3) your BGA removal. You rework will not remove the solder
Electronics Forum | Mon Sep 30 09:26:04 EDT 2002 | itempea
Russ, first step would be to get IPC-7095 on BGAs. A few notes: There can be voids in solder balls, or at the solder joints to the BGA, or at the solder joints to the PCB. Various sources or reasons can be responsible for these voids. Voids can be
Electronics Forum | Wed Aug 15 01:46:43 EDT 2001 | Pavel
Hi, could any body tell me the reason for solder beads apperance and how to aliminate them (solder beads are solder balls that are found along chip body). Thanks,
Electronics Forum | Wed Aug 15 08:16:29 EDT 2001 | wbu
Hi Pavel, what you see is most probably caused by to much solder. There�re plenty of hints to avoid this in the archives, just use the "search" function and look for "solder beads" and "solder balls". That will bring you on the right track. Good lu
Electronics Forum | Sun Sep 09 16:03:50 EDT 2007 | davef
Wave Optimizer-person Help us understand how your "excellent wave solder guide called 'Take No Prisoners' that includes instructions for attacking and eliminating solder balls and preventing their recurrence" will help Joris resolve his / her issues
Electronics Forum | Fri Sep 05 13:49:04 EDT 2008 | gregoryyork
Tell the board shop to increase the cure temp of the resist as it is undecured especially if you have waxy/greasy resiues on the board and a brown tar like substence in the solder wave itself. If undercured then solder will not flow off the resist pr
Electronics Forum | Wed Feb 16 09:19:22 EST 2000 | MARK ALDER
Please check Circuit Assembly March 1998, article "Solder balls and aperture shapes" and August 1999 "Guiding stencil design". They can be contacted at www.circuitassembly.com The main cause of mid chip solder balls is the volume of paste that is p
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