Electronics Forum | Tue Jun 14 18:33:48 EDT 2005 | slthomas
Any tried and true methods for tracking WIP with a paper system? A good white paper on the subject or even a decent book reference that covers the topic would be great. It's really never been done here before and beyond establishing time standards a
Electronics Forum | Wed Jun 29 17:38:16 EDT 2005 | GS
Several years ago, we had almost same pbm, best results have been obtained by using water soluble paste (those time the old AM1208). Any way, to get a good toe meniscus is not so easy. Talking about CTE, keep in consideration the internal die of TSO
Electronics Forum | Fri Jun 24 07:02:35 EDT 2005 | davef
Problem 1: Solder shortage * Stencil aperatures [except the heat slug] should be 1:1 with the board. * Stencil should be 5 thou thick laser cut. * Board should be 1:1 with the component * Print should look good. Problem #2: Bad connection between p
Electronics Forum | Wed Jun 29 17:58:12 EDT 2005 | GS
Hello, in Europe (SN100C sold by Balver Zinn) several solder pots have been filled by this alloy. On the paper I heard talking very well in terms of performance and good price, but not data are available ( as I know) about performance and if r
Electronics Forum | Thu Jul 28 09:23:48 EDT 2005 | fctassembly
300 million boards to date). I also have some reliability data for joints made with these 2 alloys wave soldered and then repaired with both. All of these results look good. The issue we see is mixing SN63 with any of the lead free alloys. Sn63 wave
Electronics Forum | Wed Jun 29 17:56:47 EDT 2005 | Ryan
We have a new Heller 1809 EXL reflow oven and when we run MELF�s or Aluminum Electrolytic Capacitors through the oven they are being blown off the pads. I have verified that the placement is good before reflow. I verified that they are pushed down
Electronics Forum | Thu Jul 07 09:53:17 EDT 2005 | PWH
Agree with D.B. We have also had to replace the belt that runs the auto conveyor width function. It might look just fine, but it will skip teeth on occasion if stretched or worn. Reparallelling the conveyor rails can be done manually by skipping t
Electronics Forum | Wed Jul 06 20:15:51 EDT 2005 | Gary Bremer
The good old days weren't all that bad. When I needed to have a specification callout for a conformal coating on an engineering drawing, I just used MIL-I-46058, type UR (for example), and the drawing checkers were quite happy. Since MIL-I-46058 ha
Electronics Forum | Fri Jul 08 13:43:20 EDT 2005 | pjc
I sell in-line ATE/ICT systems. They are designed to identify passed or failed boards coming off the tester(s). You can do so with a 90 deg. diverter and an extra magazine loader. The ICT machine knows which has passed and which has failed, so it com
Electronics Forum | Thu Jul 14 16:07:16 EDT 2005 | saragorcos
Here is a link to a specific article about cleaning no-clean assemblies: http://www.residues.com/pdfs/Clean_No_Clean.pdf Our facility does a lot of contract cleaning and cleanliness testing for various companies around the world, and that study s
