Electronics Forum | Mon May 03 09:54:16 EDT 2004 | smtpro
I had a few questions if anyone is using this machine. We will have one in soon to try out. Does the machine pick up defects well or does it give a lot of false failures and pass up actual defects? How difficult is it to setup a reliable program? Tha
Electronics Forum | Wed Sep 15 06:53:48 EDT 2004 | John
Hi Everybody, Can enybody tell me what is acceptable level of defects for Wave soldering?I know that it's depends of many factors,but I want to benchmark my process. Thank you
Electronics Forum | Sat Jan 29 23:55:58 EST 2005 | KEN
I recently ran a process evaluation (Print/ P&P /Reflow) and was plesently surprised with a 5.0 sigma process or 250ppm. Attrition was under 1%. Keep in mind this is defects counted Post-reflow. The most signifficant defect was tombstoning / draw-
Electronics Forum | Wed Mar 02 09:28:02 EST 2005 | bobsavenger
I am looking for images of solder paste defects like Past stringing, paste gorging and dog ears. I would also like to have the avi file to show how tombstoning happens in the reflow oven. Thanks Bob
Electronics Forum | Thu Jul 21 14:16:56 EDT 2005 | stepheniii
Tell them every action taken with the boards carries risk of damage. Process steps that don't do anything should be avoided because they carry the risk of causing defects. Even inspection causes the occasional defect, and board handling in general s
Electronics Forum | Mon Feb 13 14:34:31 EST 2006 | pjc
The best way to compare is ask each machine company to bring their machine in for a demo. Since they are bench-top machines, they are easy to transport. Pick one of your boards for them to run. Don't send any board data ahead of time. When they come
Electronics Forum | Wed Mar 22 12:28:33 EST 2006 | Rob
Leave us alone, olive oil isn't the same as crude! Defect of the month is... hot tear. http://www.smartgroup.org/pdf/Defect01.pdf
Electronics Forum | Fri Apr 07 07:47:53 EDT 2006 | Chim Richalds
Years ago we hired a consultant who helped try to resolve our high solder defect rates. He recommended the use of finger cots - $50,000 in consulting fees later, we still had the same defects.
Electronics Forum | Wed May 03 15:45:44 EDT 2006 | Tim
Brett, I've found out that it is not a defect with respect to Rev. D. You are correct about the thermal expansion but due to the size of the plastic SOIC's and SOT's they have eliminated it as a defect. Thanks, Tim
Electronics Forum | Fri Dec 01 17:18:31 EST 2006 | Jim
Doing a head-to-head comparison is best. Use the same boards with the same defects to compare programming time, inspection speed, amount of inspection types you can program for and of course defect detection. Finding the defects that occur in your pr
