Electronics Forum | Mon Mar 05 13:22:20 EST 2007 | blnorman
We use (and have for some time) used No-clean on our radio boards with no problems. We also conformally coat with a platinum catalyzed, addition cure silicone coating with occassional problems. These silicones are prone to cure inhibition or retard
Electronics Forum | Mon Mar 12 10:29:07 EDT 2007 | george
Are you using wave solder pallets? I use same flux and solder as you do. I've seen this problem when some walls in the wave fixture cause a "shadowing effect"...if you enlarge those openings you will increase the dwell time eliminatting voids (if the
Electronics Forum | Mon Mar 26 13:45:45 EDT 2007 | SKJ
Melf components are tube shaped so the X and Z values are the same. If you use 3D X-ray you can tell if the joint is attached to the board properly and you will not need the Z-dimension information. This might be a better longterm solution than usi
Electronics Forum | Sat Apr 21 16:16:15 EDT 2007 | GS
150 grams)on a very thik board (> 3,5 mm)( we did it by DRS-24). On top to this, in case of need you can use also hot N2 (Nitrogen)and get low ppm of O2, for instance when soldering on OSP finisching using NC paste, etc, if required. Regards...GS
Electronics Forum | Thu Apr 26 11:21:26 EDT 2007 | slthomas
Question...when the machine said something was wrong, was it reading something wrong (false failure), or was there a true descrepancy but not one that resulted in a bad connection (bridge or insufficient)? Also, did you perform a DOE on the process
Electronics Forum | Mon Apr 30 16:07:20 EDT 2007 | vlad_uk
Hey Basam, What sort of production do you have and what size boards, changeovers etc. The politics is irrelevant to the best machine for your production environment? Mydata's are not the only option and the Used market is full of good alternatives,
Electronics Forum | Wed May 02 06:28:26 EDT 2007 | LC
In our first run, we actually followed the solder paste recommended profile then we were told to use the BGA recommended one. When we had the 2nd run we still got the same problem. We're using Kester 909HPS (lead free) and ENIG boards. Thanks.
Electronics Forum | Tue May 01 11:26:07 EDT 2007 | stefi
Hi, I need some splice tapes of reasonable quality at the lowest price possible. Can somebody provide some help with some prices of these items? The tapes we used before were very expensive, at about 200 EUR/500 pcs roll. We will consider using spli
Electronics Forum | Thu May 03 01:07:18 EDT 2007 | pavel_murtishev
Good morning, Worth system for 0.5mm or more pitch paste printing. For less pitch (uBGA, 0.4mm etc) framed stencil are preferred due to better tensioning. Main issue with them is handling. Stencil apertures that are used for tensioning might be easi
Electronics Forum | Thu May 10 14:35:06 EDT 2007 | mmjm_1099
I got told from my quoting department that they know of one and it is Polydyne. They can not vouche for it but have heard good things. We do not use that here but some of the people here have used this at other facilities and said they liked it. ht
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