Electronics Forum | Tue Jul 15 15:46:05 EDT 2008 | slthomas
Can you describe your solder balls...mid-chip solder balls, "splatter" around pads, etc.?
Electronics Forum | Mon Jun 11 22:00:19 EDT 2001 | davef
IPC-A-610 uses words to the effect that it�s a Class 2 process indicator, if either: * Entrapped or encapsulated solder balls that are within 0.13 mm [0.00512 in] of lands or connectors, OR * Entrapped or encapsulated solder balls exceed 0.13mm [0.00
Electronics Forum | Thu Jul 17 12:59:56 EDT 2008 | gabriella
I would say the balls are aminly on passive parts in the middle.
Electronics Forum | Wed Feb 07 16:14:54 EST 2001 | Antonio
I've recently read a posting here which said that the person was trying to reduce solder balls. One of the things the person had done was to adjust the reflow profile so as to be hotter and longer in the reflow state. Am I wrong here? I thought th
Electronics Forum | Fri Jul 06 18:17:34 EDT 2001 | davef
We find no solder balls after washing our boards. It works GREAT!!! ;-) Probably more to the point, look at "Circuits Assembly" 7/01, p 40, "Eliminating Solder Beads In No-Clean PCBs". "Solder mask type & composition are the greatest contributor t
Electronics Forum | Mon Jul 16 19:27:27 EDT 2001 | eliishee
I have no choice, as per customer's request to remove the solder balls. Can i use water to clean away the solder ball since i'm using RMA solder paste not the water soluable paste.
Electronics Forum | Mon Jul 16 19:36:09 EDT 2001 | steven
I hv no choice as per customer's request to remove the solder balls. Can i just use water to clean away the solder balls since i'm using RMA solder paste and not the water soluable paste?
Electronics Forum | Tue Nov 12 09:04:21 EST 2019 | mario85
Hello Guys, I'm new here. I am smt process engineer in new company located in Poland. I am responsible for whole smt line, so I have a lot of problems at the beginning :). I would like to ask about few things. The topic is solder balls. I produced s
Electronics Forum | Mon Jun 11 10:41:16 EDT 2001 | techment
Can someone helps to interpret the IPC-A-610's requirement on solder balls ( less than 5 mils in diameters.). We found about 6 to 10 balls ( less than 5 mils ) scattered in a 600 sq mm board. Is it consider failing for class 2 product ?. Thank you.
Electronics Forum | Tue Jun 12 10:13:10 EDT 2001 | techment
Thank you, Mr Dave. Specifically, there are tiny balls spreading on the boards ( on top of solder resists, and not encapsulated). They are not near to any land/pad or connector. I do not think they post any electrical problem. They are quite far away
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