Electronics Forum | Mon Dec 22 15:33:42 EST 2008 | robinj
http://www.3ktehdas.com/uutiset/Next_05.pdf I hope this link helps.
Electronics Forum | Wed Dec 24 20:29:45 EST 2008 | xianhua_tang
Oh,I consider the process is wrong,it is stencil print paste-mount-reflow -apply glue-reflow,then wave solder. it must pass twice reflow,also the first reflow profile is different and the second .
Electronics Forum | Tue Dec 23 14:45:06 EST 2008 | comatose
One thing that helps is to divide large pads into a series of smaller pads. This prevents the scooping you're talking about.
Electronics Forum | Tue Jan 06 14:37:27 EST 2009 | stevek
The easiest way to prove out the absorbtion theory is to weigh the parts before wash, after wash, and after baking. You probably want to do this with the bare parts in isolation as the fab will pick up considerable moisture. Differences in weight s
Electronics Forum | Mon Jan 12 02:56:42 EST 2009 | sachu_70
Hi Bill, You should try pre-baking any such old devices prior to using on SMT Reflow. Refering to MSL-type3 guidelines could help in your case.
Electronics Forum | Mon Jan 05 03:12:54 EST 2009 | lococost
If you can use a IR desoldering station, you could try covering the second BGA with aluminum tape. The tape shouldnt touch the second BGA, it should form a 'roof'over it that reflects the IR waves.
Electronics Forum | Sat Dec 27 12:30:40 EST 2008 | dmeister
Hi, Does anyone know how to determine the adhesive force of solder paste - specifically the ability of the paste to hold a component in place as it moves down the conveyors on an SMT line. Thanks, DM
Electronics Forum | Mon Dec 29 20:54:06 EST 2008 | davef
We don't know anything about regulations in Nevada. While you're waiting for others to reply, check this earlier posting here on SMTnet that's close to responding to what you ask: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=57331
Electronics Forum | Tue Dec 30 12:04:32 EST 2008 | adamcrum
Good topic but still vauge. I have contacted the DoH here for more information. If I get anything, I will post it.
Electronics Forum | Wed Dec 31 14:27:56 EST 2008 | wavemasterlarry
Listen, get some training,. My brother Herb got sick as hell from playing around with our X-Ray machine. Danged fool stuck his head in there for sh*ts and giggles and had to take some time off. Had to get a system after that too!
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