Electronics Forum | Thu Feb 05 16:59:53 EST 2004 | pjc
MrM, Yes, here in lies the dilemma � �who the heck has 67 freaking days to wait for dry-out!� The only real way is to remove said parts from their carriers and put them into something that can handle the higher temp. I've seen people using those N2 c
Electronics Forum | Wed Jun 23 19:44:58 EDT 2004 | kennyg
J-STD-033A specifies a 1 year exposure life for moisture sensitive level 2 components, but no baking temp/duration for anything less than a level 2a part. Although the need is rare, what does a person do to dry a level 2 part that has been exposed f
Electronics Forum | Thu Aug 05 16:15:18 EDT 2004 | pjc
Are you considering baking due to moisture exposure? Not all OSPs are created equal. I would check with your PWB fabricator about dry times and effects on their OSP finish. After you get it, I'd still try just one PWB for bake-dry out and check solde
Electronics Forum | Fri Aug 06 10:07:50 EDT 2004 | blnorman
OSP has limited elevated temperature exposure capability. Couple that with the fact that solvents (IPA in particular) will remove the OSP. The more material you loose the higher the chances for pad oxidation. We ran an experiment with board washin
Electronics Forum | Mon Sep 20 16:27:58 EDT 2004 | blnorman
Besides the processing tests (different print speeds, print delay times, etc.) one test we've had to use is humidity exposure. Solderballing due to high outside humidity is a problem in our plant. So we expose paste to 85% humidity for various time
Electronics Forum | Wed Apr 06 07:28:54 EDT 2005 | liv2xplr
Besides the solder mask suppliers, I would contact some makers of exposure and alignment equipment. Try OLEC (www.olec.com) - they make different types of expsoure equipment. Another good source is a company called All-4-PCB (they rep a number of P
Electronics Forum | Thu Jun 02 10:14:27 EDT 2005 | zartacross
hi! i am concern with the position of the workers in terms of visual inspection,since they deal with very small and intricate parts in pcbs. I would just like to ask which is better to have, the standing or sitting positions for them? specially that
Electronics Forum | Thu Sep 22 06:12:05 EDT 2005 | gavinscott
Hi All, I have been tasked with a project on the control of moisture sensitive devices and I was hoping to get some input from the experts out there... How do you monitor total exposure time for a MSD? If the packaging has been opened and re-sealed a
Electronics Forum | Thu Sep 22 07:13:34 EDT 2005 | davef
You need to account for the time and exposure of each MSD component during your production processes. * Barcodes * Software * Procedures * Training * Etc Francois Monettet [fmonette at cogiscan.com ] at Cogniscan [ cogiscan.com ] is a frequent contr
Electronics Forum | Thu Sep 22 09:04:29 EDT 2005 | gavinscott
The main problem that we have is the packaging for the MSD's can be opened and re-sealed a number of times before it hit's production, then it is opened again to be loaded into the machine and most of the time these parts are not consumed so they are
