Electronics Forum: excessive flux (Page 2 of 23)

Excess Flux in uBGA rework

Electronics Forum | Fri Sep 28 16:51:41 EDT 2001 | pcmarch

I have had success by applying the paste flux with my finger, using a finger cot and spreading it on the PCB. This seems to put it on more consistently than using a brush.

Spray Fluxer Waste

Electronics Forum | Fri Apr 05 15:25:14 EST 2002 | davef

Spray fluxers: Where does the excess flux [that does not glomb on the board] go after being sprayed at the board? How do various spray fluxers [wave solder machines] route �used flux� differently?

PCB post reflow cleaning

Electronics Forum | Tue Mar 30 07:20:20 EST 2004 | davef

If you can rub it off, it's unlikely to be a solder mask problem. Try the "excess flux, flux contamination, solder contamination" angle.

Cleaning Water Soluble Flux After Touch-up

Electronics Forum | Thu Aug 26 22:32:04 EDT 2004 | Indy

Hey, We have introduced a Cleaning Pen from Chemtronics. It removes excess flux after touch up.. This way the operator doesn't have to go everytime to the cleaning room.. Indy

How to clear the non-clean residue out during soldering

Electronics Forum | Mon Oct 06 10:04:29 EDT 2003 | davef

Excess low residue flux is very dangerous to leave on your finished assembly, because it can: * Be corrosive to your solder connections * Promote dendrite growth. To prevent this, follow your supplier's recommendations on: * Applying the proper amou

Steaming boards

Electronics Forum | Tue Jul 27 00:15:04 EDT 2004 | ppwlee

We had a similar application to rewash excessive flux residues through a chemical wash, steam clean, and DI rinse. We currently have an inline cleaner. Can you comment what kind of steamer (made and manufacturer) is being referred to in this discussi

Alpha UP78 OSP problem

Electronics Forum | Tue May 11 10:43:37 EDT 2004 | Melissa

Has anyone experienced problems lately with excess flux residue left on the board after reflow when using Alpha UP78 OSP paste? We are getting a component failure that the designers are blaming on too much residue. Thanks

No-Clean Process

Electronics Forum | Mon Jul 26 14:58:52 EDT 2004 | cisridn

I am new to the No-Clean Process. When preforming rework in a No-Clean Process, should the rework technician clean the excess flux used to change a component or place a component missing?

Flux Residues In Lead Free Wave Soldeing Process

Electronics Forum | Sat Mar 25 16:05:13 EST 2006 | loz

Hi, sounds unusual if your profile is accurate that you have so many residues. Had a similar problem before with no clean flux and with various flux manufacturers, and all residues were down to excess flux. This does not help your case though. How a

Flux Vision

Electronics Forum | Thu Dec 21 08:45:40 EST 2000 | Hussman

I've been asked to "heat up the oven profiles" to "burn off" the excessive flux so our vision equipment can inspect solder joints. 1. I am using Multicore SN 63 no clean solder paste. 2. We use CR Technology Vision Inspection. Before I get too


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