Electronics Forum | Thu Apr 11 11:26:34 EDT 2002 | johnw
Dave, I sand corrected since I know you wouldn't steer me wrong...although the lst time I looked at the IPC spec for a solder profiel it was still designed for older generations of paste and were specifically water wash biased although that doesn't c
Electronics Forum | Fri May 10 13:52:46 EDT 2002 | pjc
FYI: not all OSP are created equal. I have had expierence, both good and bad w/ OSP boards. To qualify the vendor I would take a bare board and run it thru my oven twice on a reflow profile then flux it with NC flux and run it thru the wave solder fo
Electronics Forum | Mon May 06 21:39:46 EDT 2002 | Yannick
Hi, I would like to know if someone is using a immersion AG for their board and if this plating modify the property of the solder paste? do I need to make changes on my temperature profile? We want to change from HASL to Immersion AG to mount
Electronics Forum | Tue Jun 04 15:58:06 EDT 2002 | Hussman69
Hmmm... I know the Vitronics oven had bigger motors on em', but I don't think they're blowing molten solder balls around. You did say you changed your profile and stencil designs, which helped, but didn't exactly state what ya did. I believe this
Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb
On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t
Electronics Forum | Fri Jun 14 18:01:04 EDT 2002 | john_wsme
Dave and Russ, Today we modified the profile to ramp up slowly and have longer preheat time. The result is great, 0 out of 5 without bridging. I did review the FAB design and seen the pad is much biger than ball size. So I guess it is the problem.
Electronics Forum | Tue Jun 25 07:12:46 EDT 2002 | Daan Terstegge
Because BGA's are so hard to rework, you'll want the maximum process window for your reflow equipment, and this includes an inert atmosphere. But as long as solderability and temperature profile are well controlled you can have perfect results with a
Electronics Forum | Mon Jul 15 15:09:45 EDT 2002 | peterson
Hi all, I am trying to find some data that will show me the typical lifespan for a wave pallet. I realize that it depends on material used (Durapol, for instance) temp profile, etc and I HAVE checked the fine SMT archives... Anyone have an average n
Electronics Forum | Tue Jul 30 14:07:01 EDT 2002 | cnoonan
Slim KIC would be my choice out of these two vendors. I have worked with several different makes and models and I would say DataPaq was my favorite. But it all depends on your needs and budget. They can all get the job done. Good luck with your
Electronics Forum | Sat Sep 07 06:57:33 EDT 2002 | mk
I agree but, are there really heavy metals in this water? Our process is as follows. Print Paste Reflow Board (no components, water soluble paste only) Wash Board Same reflow profile for almost every order so no solder balling issues etc. Carbon an
