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 | Mon Jul 26 19:40:17 EDT 2004 | Grant
Hi, That's a good idea. I might head down the the 7-Eleven, and try it! I did not realize there is not too much to be gained by using refrigeration. We don't keep much paste in stock and buy it as we need it, so perhaps we should just keep it out r
Electronics Forum | Tue Jul 27 01:48:41 EDT 2004 | Grant
Hi, Ok, and I will check that out. We do treat the solder paste as a perishable now, and after each day's run, we throw used paste out. That's helped a lot overall. I agree on the hot dog rollers. I have always thought those things were a cool, but
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
Electronics Forum | Thu Aug 12 14:55:08 EDT 2004 | johnw
Hi guys I havnt been on for a while so its nice to be back been working in europe mostly Fuji CP6 skewing rnets Marcels comment is the closest rnets are a problem as said before the main areas are 1 A good assmbley shape is a must with 30% defaul
Electronics Forum | Thu Oct 21 04:21:55 EDT 2004 | siverts
Have been through this before and we resolved our problem as follows: 1.Make sure that the length of your board support pins on Your HSP is correct. On that machine the board support pins depends on the board thickness (+ - some tenth's of a mm). It'
