Electronics Forum | Mon Dec 26 19:18:49 EST 2005 | arnold
I would to ask on what do you call on the color green contamination found on the soldered units. Whe i soldered some units after few days there was a color green on the wires. what do you call on this contamination?
Electronics Forum | Fri Jun 07 11:10:08 EDT 2019 | teejsd
We also have a Foresite C3 for spot testing for ionic contamination. I didn't use it at this spot, but used it some other spots around the PCB that showed this color change and with our C3 we were passing IPC standard for ionics. But I was wonderin
Electronics Forum | Fri Jan 19 10:43:28 EST 2007 | jimmyjames
You guys are all joking right?! There aren't any contaminates in your solder, the different colors on the surface are completely normal and even expected. The top layer of solder oxidizes and the structure of the surface resembles crystals, refract
Electronics Forum | Fri Apr 29 08:28:17 EDT 2011 | markhoch
Is it possibly being caused by surface contaminants on your PCB? Or possibly flux residue? Is this a one time occurance, or are you seeing it regularly? Is it happening in other areas on your PCB or in just this location? Can you please provide more
Electronics Forum | Fri Feb 10 16:21:32 EST 2017 | cromaclear
Contamination color is silver dust, like ash dust from burning wood. The pressure of nitrogen is 27 and the flow is 0.3. Do you know where can i find some documentation about nitrogen and fluxing?
Electronics Forum | Wed Jul 31 09:08:18 EDT 2024 | rayshowers
Activated carbon is utilized to remediate contaminants from a variety of industries, such as fertilizer plants, subway surfers cars, petroleum, pharmaceuticals, cosmetics, and textiles, by removing inorganic and organic pollutants, as well as colors,
Electronics Forum | Wed Jul 05 17:06:36 EDT 2000 | Michael Parker
Patrick- You have not given enought detail of the type of discoloration. Is it "white residue"? Can it be "rust" colored? Whatever it is, you fab supplier needs to be called in immediately and give you an exact reason for this failure. Just rubbing
Electronics Forum | Mon Sep 25 15:32:21 EDT 2023 | joeljacobo
hello colleagues, Hoping that everyone is doing well, I am reaching out to you in the hope that your experience can help me. We have a wave solder with sac0307 alloy and the pot has turned a golden color, at first I thought it was common tin oxidat
Electronics Forum | Tue Apr 24 16:06:33 EDT 2007 | coop
I was just wondering if anybody has noticed a greenish/muddy color to their solder. It is just a very thin layer that can be easily be skimmed away but comes back shortly, I was just wondering if this an indication of a contaminated solder pot, we ha
Electronics Forum | Fri Jun 07 11:31:11 EDT 2019 | teejsd
This does sound like my failure! Failure typically goes away when boards are removed from humidity. Yes we do have a HASL finish. Do I have to do the waterbath alcohol/water extraction to pull these contaminants, or is warm water/steam enough?
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