Electronics Forum | Fri Feb 10 15:14:08 EST 2006 | Chunks
Establish a profile board. It should be representative of what you normally run on a daily basis, size and parts wise. Attach dedicated thermalcouples so they are permanent and will not move or come loose. High temp solder is best. Establish a pr
Electronics Forum | Thu Feb 16 11:40:40 EST 2006 | russ
I am in agreement with Steve. I take great pains to ensure that my tape jobs do not come undone. As someone else noted I also preload the tip to the board so it stays in contact. I still need to ask why do we need to care about this tiny differenc
Electronics Forum | Tue Feb 28 11:15:20 EST 2006 | billyd
In my last life we had pretty good luck with the Grid-lok system. Just not very good for extremely large boards, or very thin ones. (Tends to push thin ones up and bend them before the table rises. **On DEK printers, mind you) Form-flex was a nightma
Electronics Forum | Tue Feb 28 12:34:12 EST 2006 | pr
Gel flex is crap! If you put enough in to actually support the board, it bows. Apparently MPM knows this because they include hard pins with the set (kinda defeats the purpose huh)! I trialed the grid-lok and it worked fine and operators loved it. Th
Electronics Forum | Thu Mar 02 21:23:30 EST 2006 | Wave Master Larry
Well see you wrong. I've done this kind of thing for 12 years and I cna tell you that suporting boards with anything else will cause more problems. wave is an art tha needs to be respected even by engineers at AI. Once you get the process down the
Electronics Forum | Wed Feb 22 16:55:04 EST 2006 | mark
Hi, We are not using vaccum caps. The support pins for both printers is the same ande cover all board (components only on Top side of the PCB). I will check snap-off (right know setting 0.2-04. mm/s). I also suspected poor gasketing but clamps are o
Electronics Forum | Wed Feb 22 08:01:42 EST 2006 | INGE
We have a new SMT line, our customers are asking us the validation of the process. Not only the validation of the resulting assembled board (solder joint...) but also a validation of every single machine in the line (ex. stencil printer...). For exam
Electronics Forum | Thu Feb 23 13:56:21 EST 2006 | slthomas
I have dealt with it before and usually it's consistent, so you use some simple math to work around the issues. Now, if you have so much variability between different locations on your board for resist thickness, HASL thickness, etc., that it fouls
Electronics Forum | Thu Feb 23 19:55:30 EST 2006 | pjc
Not sure on stepped stencil designs, very application specific. Try consulting with your stencil supplier. Most of the big suppliers have applications engineering support. You can send them your board data and they can review and advise. Also, consid
Electronics Forum | Sun Feb 26 13:49:18 EST 2006 | masrimhd
Hi, We will run a no-clean wave solder process to assemble TV boards. What about incorporating a ROSE Test equipment (Ionograph, zero-ion, Omega Meter) in the process? Is it recommended, helpful or unnecessary? I�ve read about the use and limits of
