Electronics Forum: white haze (Page 1 of 2)

Flux wave on PCBs

Electronics Forum | Sat Mar 14 15:48:40 EDT 2015 | horchak

The white haze is definitely an indication of moisture being trapped in uncured or improperly applied solder mask. You can verify this by heating up the board using a heat gun on an area of the board with the white haze, and if it clears up that is t

cleaning NO clean

Electronics Forum | Tue Sep 10 22:29:01 EDT 2002 | scottefiske

Many times after initially cleaning in the solvents recommended by the paste/material manufacturer, a light white haze may still be visable...try using a soft bristle brush to remove the remaining residues. By this time the residues that remain will

White Hazing under the solder mask of a through hole board

Electronics Forum | Sat Nov 08 08:16:45 EST 2003 | davef

We saw this quite a bit, I want to say 5 or 6 years ago, but it's probably more like 10 years ago. It's caused by poor solder mask crue. Talk to your board fabricator about solutions.

Alpha 856 Flux For Wave Soldering

Electronics Forum | Thu Feb 16 11:42:29 EST 2006 | russ

I use Alpha 857 W.S. for wave is that what you mean? If so, I love this stuff, it solders everything. one downside to it is convection (wave , rework) can dry it out and leave white hazes and even residues at the joints.

ionic residues on the surface of printed circuit assemblies

Electronics Forum | Tue Sep 01 06:55:22 EDT 2009 | davef

Rocko: While you're rooting around with the cleaner to better understand the issues with your water supply, monitor the heaters of your cleaner. We've had instances were the heater control has created "white haze" problems. Are you sure the residue

White Hazing under the solder mask of a through hole board

Electronics Forum | Fri Nov 07 12:48:31 EST 2003 | rholland

I have seen in the last couple of months more boards with a white hazing under the solder mask. I ran a few tests on a board to determine the cause of the white hazing underneath the solder mask. First I confirmed, or at least I think I confirmed, t

Re: PCB Cleaning

Electronics Forum | Fri Oct 08 16:58:01 EDT 1999 | Dave F

| | Hi everyone, I am having a problem with cleaning PCB's with different finishes. I run one type of board through a drag solder and it comes out perfect using a water slouble flux then putting it in an aqueous cleaner. Then I run another board with

Mixing No-clean and water soluble processes

Electronics Forum | Wed Feb 24 07:28:40 EST 2010 | drt

Agree with what has been said so far. Check with your end customer and make sure the white haze appearance of the board will be acceptable. You will never get the board to look like it did before you started. It may be clean but it won't look like t

Electrical Wiring Anomaly

Electronics Forum | Wed Nov 09 09:45:34 EST 2011 | dyoungquist

The white haze is most likely coming from your ultrasonic air humidifiers. I have seen this from a home unit that left a white residue on furniture in the house. What is your water source for the humidifiers? If it is hard water you will get more

Thermal Discoloration

Electronics Forum | Tue Jan 22 20:26:18 EST 2002 | davef

Help us visualize this better. * What color white [ie, yellow/white, green/white, a haze, etc.] are we talking about? * What size and shape are the spots? * Where are the spots located? * Etc Help us understand what�s going on by describing the sp

  1 2 Next

white haze searches for Companies, Equipment, Machines, Suppliers & Information

PCB Handling Machine with CE

High Resolution Fast Speed Industrial Cameras.
Flux-Free Reflow Soldering

High Speed Precision In-Line SPI System - Mirtec MS-11
SMT feeders

IPC Certification Training from the comfort of your home or office
used smt parts china

Training online, at your facility, or at one of our worldwide training centers"
Assembly Automation Technology

MIRTEC - the Global Leader in PCB INSPECTION Technology.