Electronics Forum: flux migration (Page 1 of 6)

Encapsulating water soluble flux residue?

Electronics Forum | Fri Dec 16 10:25:37 EST 2005 | solderiron

Rather than cleaning a water soluble flux residue off the board, by encapsulating the product. covering the board or the component with lets say a Hysol encasulant. Would this prevent the active flux residue from migrating and deteriorating the elect

Grainy Solder Joints

Electronics Forum | Fri Jun 25 16:18:26 EDT 2004 | waveroom

For what its worth. Even though you are potting the boards. If for whatever reason flux residue (OA) was left on the board prior to potting this flux could migrate and cause embrittlement problems with the solder joint. I would definately inspect for

Black pad on BGA after removal

Electronics Forum | Thu May 05 11:55:52 EDT 2005 | jimmiem

Was it determined what caused the flux migration?

Printing with new synthetic paste

Electronics Forum | Thu Mar 20 15:14:48 EST 2003 | swagner

Does anyone out there have any experience printing with the new synthetic pastes? The problem I am experiencing is flux migration under the screen that I do not see with my other suppliers, any help would be appreciated. Thanks,

Black pad on BGA after removal

Electronics Forum | Thu May 05 11:50:03 EDT 2005 | russ

Just went through this with a customer. Removed BGAs and noticed discolered pads at some locations. It was determined that these were open connections that had some type of flux migration between the ball. They also took solder readily. This may

Handsoldering/Rework Flux

Electronics Forum | Wed Feb 18 12:13:50 EST 2004 | babe

my experience tells me you should have no problem. However please remove the flux residues from the board. Unless of course this is a product that is inexpensive and you don't care about degradation/flux migration etc. In example an electronic toy. T

Solder paste in Syringe vs Jar

Electronics Forum | Thu Nov 07 07:35:23 EST 2002 | cyber_wolf

If you are experiencing flux migration, try refrigerating your paste when not in use. This causes the flux viscosity to go up. I have seen flux seperate from the solder is when it is VERY old and out of date.Sometimes warmer ambient temperatures wi

Contamination

Electronics Forum | Sun Aug 13 08:54:19 EDT 2006 | davef

electrochemical migration What flux are you using?

reflow oven problem

Electronics Forum | Wed Feb 07 16:16:10 EST 2007 | mr

I have seen this before. Check: --Vibration of belt --Interference (part getting "brushed off" while reflowing bottom-side components --Some glues' cross-linking mechanism is impaired by the flux during migration in reflow, redering the glue useless

Solder paste in Syringe vs Jar

Electronics Forum | Thu Nov 07 04:24:24 EST 2002 | Yngwie

Thanks for the reply guys...It was much appreciated. On syringe or Cartridge - what about the impact of flux migration, there was a talk about, periodically we need to turn the cartridge or syringe upside down to ensure the metal content & flux are a

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