Electronics Forum | Mon May 27 04:36:08 EDT 2019 | SMTA-Rogers
Dear Sr.Tech, We tried to adjust the soak time and TAL time of reflow profile, but it doesn’t seem to help much.
Electronics Forum | Fri Mar 27 03:42:17 EDT 2020 | sssamw
Did you try 0.12 or 0.1mm nano coated stencil @ 10 mil aperture? A soak time type profile with long reflow time could help.
Electronics Forum | Thu Aug 17 07:48:46 EDT 2000 | Kamran.T
Sounds like improper heat distribution! Raise your prheat/soak time to assure even heating of the board∂. Another issue could be the moisture causing this anomaly.
Electronics Forum | Thu Aug 23 00:17:53 EDT 2001 | mugen
Mike, 1) NC process = less BGA voids & void-size 2) longer soak times... Heyz, thanks mate :) ~~~~~~~~~~~~~~ Dave F, tot u were inclinded to the school of thought, that NC process hath higher chance for whining abt voids?
Electronics Forum | Fri Jul 02 11:17:09 EDT 2004 | jdumont
I agree, the flux will probably burn off before it gets to do its job. Def not a good idea....
Electronics Forum | Fri Jul 02 14:15:42 EDT 2004 | bcceng
X-RAY, X-RAY and X-RAY.. to optimize your reflow process when using BGA's you have to use your reflow profile hand to hand with your x-ray process.
Electronics Forum | Sat Jul 03 11:10:48 EDT 2004 | KEN
??? Two assemblies assembled under the same conditions with identical x-ray results can have dramatically different life expectencies. Operating environments will have a direct affect on the product ie. hunidity, temperature swing, temp. duration, v
Electronics Forum | Fri Jul 23 08:59:27 EDT 2004 | davef
For reflow, low soak time and low peak temperatures will help reduce the number of components skewing Search the fine SMTnet Archives. For instance: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=6071&mc=15
Electronics Forum | Fri Mar 10 12:15:52 EST 2006 | geocominc
Increase Soak time & Slow down line did reduced Delta T by 10+,Fans are at max - Both High -getting closer to target now.Great idea.still more to do .Thanks for advices.
Electronics Forum | Wed Nov 05 13:34:24 EST 2008 | ed_faranda
Exactly what should I look at in my reflow profile? Soak Times, TAL, Peek?!? I am right in the middle of the manufacturing specifications as far as my profile goes.
