Electronics Forum | Mon Feb 19 18:48:59 EST 2001 | davef
For smaller companies, it is difficult to justify the ~$35k cost of products in the class that you sell. On the other side of things, sloshing boards and stencils in a plastic wash pan containing flux thinner is not a good option either. Neither is
Electronics Forum | Tue Feb 20 10:47:19 EST 2001 | Massimo
Hi everybody, I need to collect some documentation about BGA rework, in particular I wolud like to know if there are some "theoretical" studies about this matter (for example a finite element model of a BGA suitable to be used to simulate BGA reflow)
Electronics Forum | Tue Feb 20 12:30:24 EST 2001 | Donnie D.
I was wondering if there's anyone who can give me some feedback on a product called the Data Pac Reflow Tracker. My company was paid a visit by one of their vendors, but I would like feedback from someone who has used this product. What are its benef
Electronics Forum | Fri Feb 23 10:42:16 EST 2001 | Greg Jones
Donnie: I was surprised to see your comment "a little more up to date than KIC." Please contact me for information about our new product lines. I can gaurantee you they're more then "up to date." Greg Jones DrJ@kicmail.com
Electronics Forum | Tue Feb 20 15:30:23 EST 2001 | kerryn
We have a high-mix, low-volume type shop and clean over 50 stencils per day. The wash and rinse cycles in our aqueous stencil cleaner is ok, but the drying time takes too long (15 - 16 minutes per stencil). You indicate that hot air can damage a
Electronics Forum | Wed Feb 21 11:25:04 EST 2001 | Dave E
We have had a problem with some resistors on some conformally-coated boards which, after a few months in the field, started going bad -- a real worst-case situation. The resistors would increase in value dramatically and sometimes develop diode-like
Electronics Forum | Wed Feb 21 21:21:05 EST 2001 | Dave E
Realistically it seems like a component problem that the vendor is trying to blame on our processes. The problem is internal to the 0805 resistors so I suppose they are perhaps porous to some degree. I have only heard 3rd hand about the analysis that
Electronics Forum | Thu Feb 22 07:03:12 EST 2001 | davef
I guess the answer to that would have something to do with the distribution of the problems across the various components on the board. [I hear you saying that it's isolated to a specific component, from a specific supplier; rather than being more l
Electronics Forum | Mon Feb 26 09:36:08 EST 2001 | blnorman
ASTM E 443 is a test for sulfur by Oxygen Flask Combustion. Other instruments will detect sulfur (I assume a SEM with EDS capability will pick up the sulfur). We had an addition cure silicone potting compound inhibition problem last year that was t
Electronics Forum | Wed Feb 21 20:00:09 EST 2001 | davef
Sounds like you received some good advice. Most of our stencils are used once a day [at most], so more often than not they are air dried. If we goof-up and need to reuse a stencil during a day when we have limited drying capacity, we wipe the lowes
