Electronics Forum: excessive flux (Page 3 of 23)

Excess Flux in uBGA rework

Electronics Forum | Tue Sep 25 15:48:34 EDT 2001 | mparker

Scavenge all the old solder off the board and the chip. Micro screen paste to the chip. As far as thickness, check your aspect ratio to determine the spec. Eliminate just one variable at a time to get to the root cause. Start by not using the tacky

Excess Flux in uBGA rework

Electronics Forum | Mon Oct 01 04:01:08 EDT 2001 | wbu

You got the right feeling for that I guess but what if somebody else is doing your trick, is it still repeatable? Personally I wouldn�t trust that method more than the brushing. Did you try the dipping method ? The thing from Dave with this "card-com

Spray Fluxer Waste

Electronics Forum | Fri Apr 05 20:56:17 EST 2002 | cycorda

Dave, Some spray fluxers are a lot more efficient than others - some will have such little waste that most of it is carried out by the exhaust. One of the benefits of spray fluxing should be that it creates very little excess flux, therefore no n

Humiseal 1A33

Electronics Forum | Tue Feb 24 09:47:45 EST 2015 | rgduval

Well, since you're looking at a water soluble flux from AIM, I'm guessing you wash the boards before you conformal coat them. Thus, I wouldn't expect any interaction between the excess flux that you're washing off of the boards and the Humiseal that

Solderbridges wave soldering

Electronics Forum | Fri Dec 01 07:46:41 EST 2006 | davef

Bridging Causes: * Insufficient flux * Excessive pre-heat * High conveyor speed * Solder contamination

Wave Solder question

Electronics Forum | Tue May 22 08:39:23 EDT 2012 | davef

Bridging Causes: Insufficient flux, excessive pre-heat, high conveyor speed, solder contamination [AIM Solder]

Re: Broken capacitors

Electronics Forum | Fri Dec 08 23:02:24 EST 2000 | LeeKibler

Beware the foam fluxer. I had a problem with cracked caps that just about drove me off the deep end. I discovered that my foam fluxer air knife was not turned on resulting in excessive flux. The excessive flux (VOC free) was not properly dried off

Re: Maybe a sprayfluxer will do

Electronics Forum | Tue Aug 22 05:10:56 EDT 2000 | Wolfgang Busko

Ron:It�s tricky to get what you want with this foamfluxers espacially using pallets. They got to be cleaned regularly. Most of the time excessive residues are removed using brushes which adds another process step. It should be better using a sprayflu

Conformal coating

Electronics Forum | Tue Feb 10 13:59:29 EST 2004 | Vadim

At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,

Conformal coating

Electronics Forum | Tue Feb 10 14:02:03 EST 2004 | Maryann

At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,


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