Electronics Forum | Wed May 30 21:16:05 EDT 2001 | davef
MPM AP-27 preferred over MPM AP-20 The issue is release of paste from the stencil. A vertical lift printer kinda snaps the stencil away from the board to complete the print cycle. The inertia and the rheometric properties of the paste make it rele
Electronics Forum | Wed May 30 20:39:02 EDT 2001 | davef
Everyone has different needs. We all make trade-offs on costs versus benefits. So, you should determine the value and functionality of the Forums by participating in the current threads, scanning archived threads for pertinence and appropriateness
Electronics Forum | Thu May 31 21:53:41 EDT 2001 | davef
When the "novel" conversations predominate and the sometimes incessant "help I got solder balls" threads fade, yes. [The 'incessant solder ball' problem is one of the reasons that people (like his Slappiness) are encouraged to check the Archives (th
Electronics Forum | Fri Jun 01 12:07:53 EDT 2001 | medernach
No clean residues can range in appearance from brownish gunk that looks like tree sap (because it is in some instances) to almost no residue at all. Is this product exposed to a wave soldering process or SMT? I would guess it's a wave process if th
Electronics Forum | Tue Jun 05 12:55:54 EDT 2001 | JoAnn
Although I don't know the answer to this I am sure one of these people could help you. They are all members of the SMTA with a great deal of BGA rework experience. Doug and Ed both teach rework classes for us. If you are interested in a BGA rework
Electronics Forum | Mon Jun 04 20:55:55 EDT 2001 | craigj
Have been having problems with the above IC but dont know why. Our profile is well within the manufacuters recommendations. We are getting a higher than desired first off fail rate and are concerned. It is not possible to inspect the soldering as the
Electronics Forum | Thu Jun 07 15:37:32 EDT 2001 | Claude_Couture
Kerryn, It's the first time I hear someone who needs an automated inspection machine to check the cleanliness of stencils. Why not improve on the cleaning method itself. I use ultrasonic batch cleaner. It takes 3 minutes to clean a stencil, 2 minutes
Electronics Forum | Wed Sep 12 12:55:34 EDT 2001 | stevearneson
The CyberOptics LSM 300 cannot provide true 3D volumetric measurements. It is impossible to measure volume using a "Box" that is drawn around a feature without the same characteristics. Owners of the LSM 300 try it for yourself. Move the stripe ar
Electronics Forum | Wed Sep 12 14:08:37 EDT 2001 | caldon
PLEASE!!!! If that were the case then a 6 mil stencil is not a 6 mil stencil depending on paste, pressure, snap off...... We have and use the LSM 300 paste inspection to great degree of success (esp. for solder paste on semiconductor devices). So w
Electronics Forum | Wed Sep 12 17:57:29 EDT 2001 | CyberVilla
Cal, I can only respond by saying that the question relates to one important word "Reliable". If you feel that you have found the special touch to provide accurate and repeatable results, then I applaud your hard work. Also, a counter attack by co
