Electronics Forum | Fri Sep 07 09:19:44 EDT 2001 | Hussman
Jean, A lot depends on your process. can you add a dot of adhesive after screen printing and before placement? This works well for larger heavier parts. A second suggeestion is to reprofile your board. Try keeping the bottom side cooler. I do t
Electronics Forum | Wed Jan 08 10:54:19 EST 2003 | dphilbrick
As Russ says this should process well the BIG BUT..T is what are you using to process this part! How old / capable is your equipment. Screen print quality is a must. Placement accuracy is critical and reflow stability is important. So the answer is d
Electronics Forum | Thu Aug 21 15:50:12 EDT 2003 | davef
Couple of points are: * You're technically correct that ball height has the potential to vary by 8 thou, but we never see that much variation. Ball heights within a lot of components vary just about nil. * When we place BGA, we smush them into the p
Electronics Forum | Thu Aug 21 18:36:32 EDT 2003 | paulm
Hi Dave and Justin, Thanks for the advice. Dave you mentioned you "smush" your bga's. What type of machine are you placing then with it? Is the additional pressure to smush them machine or manually applied? Also, the 0.004" variance we are being
Electronics Forum | Tue May 18 13:02:29 EDT 2004 | msjohnston1
I was a former SLC 3COM Employee and worked with the equipment you mentioned. I would not recommend the equipment 3COM had in SLC. The new Panasonic CM402 machine looks good. I would recommend the DEK over MPM for screen printing based on the prob
Electronics Forum | Fri Jun 04 18:18:28 EDT 2004 | gabriele
Hi Ricardo, You should complete the question with more details like : - kind of components pkgs (Chips, SO,TSOP,QFP,BGA,CSP,etc) and % of them versus the total (400) - tech complexity of components (0402 ? Finest Lead and ball Pitch ? SMT conne
Electronics Forum | Tue Aug 10 14:12:53 EDT 2004 | Fillmore
The alternatives are ink-jet and laser and you'll spend way over $20,000 for that solution! Screen printing is still the best at ROI when doing multiple panels and lot's of legends. We used a rubber stamp inked with Hysol for smaller quantities and o
Electronics Forum | Fri Sep 17 14:46:29 EDT 2004 | tmoss
I am looking for any information regarding In-Line PCB Bar-Code Scanners. We currently scan our PCB's before screen-printing using a hand-held scanner but I am looking for something that could be in line. It would have to be something that could be a
Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey
Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w
Electronics Forum | Mon Mar 07 06:31:02 EST 2005 | pjc
The Camalot Gemini II is capable of dots for 0402 chip. What would an Electrovert person know about that? With a 32gauge needle you can put down as small as 0.006" dia dot. For information about dots for 0402 chips, please contact Camalot application
