There have been many studies of the causes of tombstoning; some published, some not. They tend to focus on a single process parameter as the root cause of tombstoning. However, there is no single process change that is a sure cure for tombstoning! Those that claim otherwise are either uninformed or trying to sell you something. Rather than limiting your view to a single solution, EFD recommends you heed all of the studies. Like pieces of a puzzle, each study does not reveal the whole picture, but looked at all together, the picture is clear...
BEST Instructors have put to video demonstrations of common hand soldering skills. These are not designed to be in place of live one on one training where repetitive skills and subsequent one on one feedback is given. Rather they are quick refreshers designed to be viewed if a specific skill has not been practiced in a while.
Posted by CW
I need to reflow SCA solder balls on Sn/Pb paste, i get a pretty OK solder wetting and collapse apperance, however, i am seeing voids everywhere, some of them is greater than 25-30%, which has exceeded IPC standard...
Posted by Daxman
We've got a problem with our AP25. I just finished repairing and calibrating this printer. We needed to replace the camera. After the cal. was done, the print accuracy was superb. However, it seems now, the consistency will not maintain itself...
Posted by aj
I am currently looking at ways to reduce Dross on our wave process. One tool that I came across was the Pulsar Solder Saver. Its hand held and kinda sucks in the dross -returns the good solder to he bath and drops the powder on top of the Pot to be scooped away...
Advertising in this Newsletter
Banner ad spots can be purchased to appear in single or multiple issues of the Express. Send your inquiries to SMTnet
Advertising on SMTnet.com
Create exposure for your company!
SMTnet Sponsorship Opportunities
Join the companies below who get their products & services found in front of over 1,000,000 users a year at SMTnet