Electronics Forum | Tue Jun 11 14:53:06 EDT 2013 | emeto
I am not sure that underfill and rework can get along. these boards might be scrap already. You need to get more information about the underfill(manufacturer, supplier...)
Electronics Forum | Thu Jun 27 16:18:01 EDT 2013 | burstd
actually the SMT 88U might even be a better option. super fast cure time at low temperature with easy rework
Electronics Forum | Fri Dec 05 10:09:36 EST 2014 | robl
Hi Rob, Could be moisture getting into the boards or the BGAs or it could be drafts messing with the thermocouples measuring the heat at board level meaning you over cook it. Are you pre-baking the PCBAs & the BGAs before reworking and replacing?
Electronics Forum | Fri Dec 12 14:20:44 EST 2014 | emeto
there are several ways: 1. Manual method- Remove the part using hot air gun, clean the pads, make a small stencil to re-ball the BGA and it is ready for placement. 2. Improved method - Use equipment dedicated for BGA rework 3. No hassle method - Giv
Electronics Forum | Tue Jan 06 06:56:26 EST 2015 | stivais
How about rework (touch-up) for Class 3? Some say that you are not allowed to rework anything for Class 3. Though I have not found any proof for this 'requirement' in the standards.
Electronics Forum | Fri Jan 16 01:51:44 EST 2015 | hemant_pang23
Pls help for getting the spare part no TOP & Bottom heaters for the Conceptronics BGA Rework Freedom 3000
Electronics Forum | Thu Jan 29 09:31:19 EST 2015 | swag
We use tips I think they are like 725F. So the rework is probably mid 600's and up to 725 max. Can't say if that's "the best" but we do a lot of ROHS and that's we we do with good results.
Electronics Forum | Mon Feb 16 02:55:43 EST 2015 | hmsahir4u
Dear Forum Members, I have needed that software for DRS-20 Model Rework Station by ZEVAC. Your kind cooperation will by highly appreciated.
Electronics Forum | Tue Mar 31 08:18:32 EDT 2015 | philc
There is a useful PDF on the Freescale website about reworking LGA's that you might find helpful. It's at cache.freescale.com/files/32bit/doc/package_info/AN2920.pdf
Electronics Forum | Fri Apr 17 08:52:03 EDT 2015 | charliedci
Thanks for the info Sarason. The UVCL is a Urethane. Did not want that hard of finish (for solder rework issues). We like the Acrylic as acetone will remove cured material for solder rework.
A US manufacturer of quality hand tools for those engaged in the repair, rework, R & D, testing, and assembly of electronic components and printed circuit boards from Through Hole to 2Mil Pitch Surface Mount.
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