Electronics Forum | Thu Nov 30 23:48:16 EST 2000 | DL
Dave, Thanks for the input. I cant beleive I didnt think to check the suppliers web site, I feel like an... well anyhow. The leads I'm referring to are place at a 90 degree angle from the edge of the pcb and extend towards the bottom as opposed to
Electronics Forum | Wed Oct 06 08:49:22 EDT 1999 | Mark
| | I hope that someone can help me with my problem! I am experiencing a lot of glued on parts falling off in the wave solder machine. A little information about my process: 1)We use Loctite 3609 glue that is used up long before its shelf life 2)Ou
Electronics Forum | Tue Jun 16 09:15:56 EDT 1998 | Justin Medernach
| We are very concerned about microcracking in SMT P&P process. I want to know something about: | What is microcracking? | When did it occur? What are the causes? | How can avuid this phenomena? Toni, Micro cracks can be caused by a ton of conditions
Electronics Forum | Thu Jun 25 09:37:48 EDT 1998 | Russ Miculich
The real causes of microcracking are not normally due to pick and place - particularly if you are using a piece of equipment with vacuum pick up and release. The real cause of microcracking is due to thermal stresses on the die and the choice of the
Electronics Forum | Wed Oct 08 00:58:19 EDT 2008 | darby
Short answer is yep, if you are centering on the nubs and not the leads. Depending on the registartion between nubs and leads you may then have misplacement. Holes as fids will usually let you down at some stage due to vision issues. Blunt drills bla
Electronics Forum | Tue May 30 11:51:43 EDT 2000 | JAX
Sal, I have seen this problem placing SMT connectors which exceed 60mm in length. Although I did not use siemens equipment at the time I am not sure if they will place enought force to seat the entire connector flush to the board. They have a maximun
Electronics Forum | Wed Aug 10 04:15:01 EDT 2005 | vinitverma
Ari, I would suggest you make a checklist of all your requirements (not just large scale production) and prioritize them with weights assigned to each. Fill in the checklist for each equipment and manufacturer and you'll have the results out. I wou
Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
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