Electronics Forum: white residue on pcb (Page 1 of 15)

How to clean white residue

Electronics Forum | Tue Jul 02 12:33:32 EDT 2002 | Mike Konrad

We have had success removing white residue. A change of chemical (PCB-Wash or Vigon A200) have a good track record in removing white residue. As Dave stated, we (and others) operate a contract cleaning service. Contact me offline and I�ll provide

Re: white residue after wash

Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook

| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro

White residue on PCB's

Electronics Forum | Wed Oct 11 09:55:10 EDT 2000 | Ian Harrison

Some boards that are populated by one of our subcontractors are getting a white powdery residue forming on them. I think it is the non clean flux and process which they are using that is causing the problem. Their process is as follows. Flux is put i

Re: White residue on PCB's

Electronics Forum | Thu Oct 12 17:56:58 EDT 2000 | DennisF

The white residue can be caused by putting Alcohol on the no clean product. Some people will attempt to clean an area they have reworked.

Re: White residue on PCB's

Electronics Forum | Fri Oct 13 15:16:43 EDT 2000 | Dave F

George and the others make good points. Check Les Hymes response to a similar question in 7/00 "Circuits Assembly"

Re: White residue on PCB's

Electronics Forum | Wed Oct 11 10:29:28 EDT 2000 | G. English

Try the following steps : FIRST CHECK THE ARCHIVE for further information, it WILL help you. Step One : What�s the chemical analysis of this white res? Obtain a sample. It could be tin, rosin, or something else??? Step Two : The fastest way I know

Re: White residue on PCB's

Electronics Forum | Fri Oct 13 05:21:08 EDT 2000 | Robert Steltman

Looking at the original post, it seems that the white residue is formed on the board after wave soldering and becomes evident when it has been left standing for a while. From what I understand, it seems that the solids content of the "no clean" flux

Laser marking on white solder mask.

Electronics Forum | Thu Feb 04 12:01:07 EST 2016 | g2garyg2

Hi Luis A white mask typically helps in the marking process since you are not reliant upon the PCB layers to create the contrast. Laser marking is really an etching process, so if your laser is set properly (power and focus) the goal with mask is to

Flux residue on connector pins

Electronics Forum | Sun Aug 29 19:17:34 EDT 2004 | aqueous

Chen, It is always best to place one�s effort on determining the cause and content of the residue rather than trying to work around it. The first thing you must determine is the nature of the residue. Is it flux? In many instances, the residue is

Finding a white strand on fine pitch components

Electronics Forum | Fri Aug 28 05:07:59 EDT 2009 | sachu_70

Do you clean the stencil manually or using the automated under-stencil cleaner on your Printer (recommended)? 1. Ensure that stencil wipes are lint-free and soaked sufficiently with solvent before use. 2. If your printer supports automated cleaning

  1 2 3 4 5 6 7 8 9 10 Next

white residue on pcb searches for Companies, Equipment, Machines, Suppliers & Information

Precision PCB Services, Inc
Precision PCB Services, Inc

Products, services, training, and consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep & Sole Agent in North America for Shuttle Star BGA Rework Stations.

Training Provider / Manufacturer's Representative / Equipment Dealer / Broker / Auctions / Consultant / Service Provider

1750 Mitchell Ave.
Oroville, 02

Phone: (888) 406-2830

SMT feeders

Reflow Soldering 101 Training Course

Wave Soldering 101 Training Course
Thermal Interface Material Dispensing

World's Best Reflow Oven Customizable for Unique Applications
thru hole soldering and selective soldering needs

Want to know where to find the best AOI system? - Read testimonials.