Liz Mitchell 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...
Bob Wettermann 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.
SAC solder balls reflow with Sn/Pb paste - Voids Issue 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... MPM AP25 Print Repeatability Problem 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...
Trade Show/Exhibition Wed, November 01, 2006 Tianjin International Exhibition Centre, On May 9th, 2006, the latest statistics from MII showed that since the beginning of this year, electronics & information industry in our country has developed swiftly... Seminar/Course Tue, November 07, 2006 The Swallow Stone House Hotel, UK This one-day seminar brings into focus the problems, and solutions, of designing PCBs for the thermal environment... Trade Show/Exhibition Wed, November 01, 2006 Wyndham Hotel San Jose, CA, USA The third annual IWLPC will explore cutting edge topics in integrated circuit packaging, including 3D packaging, system-on-package, MEMS and chip-scale packages...
Process Engineering Technician Tampa, FL USA Help us be a leader by acting as the Process Engineering Technician on 2nd Shift for our Printed Circuit Board Manufacturing Division... Tampa, FL, USA The candidate must have experience operating Universal or Siemens surface mount equipment... Professional Sales Representative Spokane Valley, WA, USA We are looking for professional sales representatives who possess in depth technical knowledge of the electronics manufacturing industry... |
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