Electronics Forum | Wed Feb 11 14:55:52 EST 2015 | erezah
we received assembled PCBs with spots that look like a bleach spots all over the PS and CS . The board house said that this is normal due to flux aqueous wash process. Can it cause problems (e.g. corrosion ) in the long run or cause issues when wor
Electronics Forum | Thu Feb 12 08:35:22 EST 2015 | davef
Solder mask is intended to protect the traces from the soldering process. That's it. [Tried to upload a picture. It's broken.]
Electronics Forum | Thu May 19 03:39:04 EDT 2016 | jpcwg
Design application software in resistance welding layer options to carry on the design, can put the resistance welding options this functionality, born PCB board factory to actual production of PCB design are window. we are professional PCB manufac
Electronics Forum | Mon May 09 11:29:05 EDT 2016 | jpal
I wanted to bump this up. I am having the same problems. I cannot convince folks it is a solder mask issue and not our process issue, even though it shows up after wave and wash. I can heat the boards and even send them back through the wave preheate
Electronics Forum | Thu Feb 12 07:58:54 EST 2015 | erezah
A-610E, 10.7.4 covers solder mask discoloration. > Use that for your disposition > > In a previous > thread, Boardhouse told us "Here are a couple of > things that can affect color. * Material color > is the major, * Matte green from Enthone wou
Electronics Forum | Wed Feb 11 17:04:47 EST 2015 | davef
A-610E, 10.7.4 covers solder mask discoloration. Use that for your disposition In a previous thread, Boardhouse told us "Here are a couple of things that can affect color. * Material color is the major, * Matte green from Enthone would be different
Electronics Forum | Thu Feb 12 12:30:16 EST 2015 | stevezeva
I remembered something from the TechNet a long time ago about heating the board with a heat gun to see if the white spots disappear. I searched the archives and found this from Bill Kenyon: Quick identification of solder mask white spots- if it is t
Electronics Forum | Thu Nov 10 10:45:32 EST 2011 | aqueous
The use of IPA in automated defluxing systems is nearly extinct for the following reasons: 1. IPA is flammable. In a spray-in-air environment, the already low flashpoint is even lower. 2. IPA is not a great solvent. There are specific containme
Electronics Forum | Mon Apr 28 14:26:53 EDT 2008 | arminski
Hi guys, do you have any issue aqueous cleaning pcb's with potentiometers? We have issues such as water penetrating inside the potentiometers causing shorts or electrical problem in the field. what is the drying temp and time you have in your experi
Electronics Forum | Tue Sep 11 15:37:53 EDT 2018 | robertbronx
Hi Everyone!! We have in our Co.Aqueous SMT600-LD In the middle of the cycle a lot of foam even without putting any solvent to wash in the tank. Overflowing everything over the floor. What will be the cause of this? Please if someone can give me an
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