Electronics Forum | Tue Jun 01 17:56:41 EDT 2004 | Rob
I got some information on this support mechanism but was a little unsure how it worked. Let's suppose you're getting ready to run the second side, do you place the board on this support and have the support travel into the printer? Or is the support
Electronics Forum | Fri Jun 25 13:00:48 EDT 2004 | haviland
Hi--We deal in used and recond. equipment in the Midwest, and have available a 1999 Amistar #7100FV w/ a nice complement of feeders, (6) pick up heads, rated component placement at 18,000 pph. Does .0402's, .3 BGA w/ 20 mil pitch, Full vision system,
Electronics Forum | Tue Jun 29 13:42:20 EDT 2004 | sigmaprint
You will need to set the contact and squeegee zero calibration every time you set up a new product, we do this because the thickness of the substrate (pcb) can change between product and this will effect these calibration settings. The machine does n
Electronics Forum | Wed Jun 16 04:14:11 EDT 2004 | loz
I have used this method as well, it did have its drawbacks though. We used to have the positioning holes etched into the stencils and this worked fine, for a while. After a couple of months of opening up and closing the fingers on the hanging rack, w
Electronics Forum | Fri Jul 16 08:05:44 EDT 2004 | cyber_wolf
In case anyone is interested, I found a solution to the problem. The 3 nylon rollers that the overlay tape rides on have a tendency to build up crud inside them. They may appear to function correctly when there is no overlay tape pushing on them, but
Electronics Forum | Tue Sep 14 04:28:36 EDT 2004 | Rob
Hi Dave, 3M� Spray 75 Repositionable 500 ml was the last we used due to a bright spark in purchasing, but production didn't get on with it too well. The only one that really gives us good consistant performance was the original 400ml Spraymount a
Electronics Forum | Sat Jun 26 10:27:17 EDT 2004 | mskler
Hi all, We are facing prob. in MPEG card. WE are using 6 mil stencil with steel squeezee. There are two 20 mil Ic�s. Once we set profile according to the profile given by the supplier after that we made 2000 nos of boards & in first shot almost b
Electronics Forum | Mon Jul 19 21:33:26 EDT 2004 | davef
Are you talking about small 'volcanos' that burst through PTH solder connections? If so, you have moisture outgassing through the PTH barrels: * Plating on the hole of your bare board is too thin. It should be greater than 1 thou [25um]. * Your bak
Electronics Forum | Sat Jul 24 09:06:40 EDT 2004 | davef
We believe that many manufacturers' recommended pads should be close to the last resort. Recommendations are: * Standardize with the IPC guidelines or those by Jim Blankenhorn [ smtplus.com ]. Anyone that wants to change from that standard needs to
Electronics Forum | Thu Aug 05 20:11:31 EDT 2004 | Darren
Dhanish, There are a number of things to know before we can answer a large question such as yours. 1) what machine is being used. 2) how does the machine account for height at placement. 3) is the part rotated a large amount after placement. 4) is th
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