Electronics Forum | Wed Aug 22 16:00:02 EDT 2007 | razor1
The color variation in the solder mask from our PCB supplier varies to the point that we have problems with our AOI recognition and accuracy. We have not been successful at finding an industry spec which outlines solder mask color requirements. We
Electronics Forum | Wed Aug 22 21:44:04 EDT 2007 | davef
Questions are: * Do these boards meet IPC-A-600? * What does your supplier say is the source of this color variation? * What steps is your supplier taking to make the boards more acceptable?
Electronics Forum | Thu Aug 23 11:24:16 EDT 2007 | hussman
Welcome to Chine. Your best bet is to specify the type of mask you want and the type of finish you need. If not, they run what ever they have available. You may want to contact you board vendor and find out what they can offer. That's what we had
Electronics Forum | Tue Dec 11 22:31:40 EST 2001 | davef
I'd be surprised if solder mask color is causing your delamination. We use various solder mask colors on FR4 boards and notice no difference. * ~99% of our boards are a medium green * ~1% of our boards are dark green * One of our boards is caramel b
Electronics Forum | Thu Oct 21 23:20:05 EDT 2010 | camtechpcb
According to the Trichromatism.Half red and half blue will get purple.But the trichromatism only apply to color light. The red and blue soder mask are coloring material.Both of them absorb light.You mixed them up,so you lose blue and red,and get grap
Electronics Forum | Tue Oct 19 19:44:19 EDT 2010 | laen
I'm looking to mix up a batch of purple solder mask. Has anyone found a good ratio of red and blue that produces a pleasing purple? 50/50 produces a pretty ugly grape color. Is there a standard ratio most fabs use?
Electronics Forum | Tue Dec 30 08:55:29 EST 2008 | umamaheswaruk
Hi all, I have couple of questions/doubts on solder mask, please clarify. Why green color solder mask is popular when compared to other solder mask (RED, PURPLE, BLUE etc.). Are there any performance issues with other solder mask if I use them.
Electronics Forum | Wed Jan 14 08:43:14 EST 2009 | prkonrad
I did not change my mind, I just said that we sat down with the manufacturer and showed them the 3-4 different color PCBs for one product. They agreed that it is not acceptable... and supply us only from one of their sites. (the different manufacturi
Electronics Forum | Mon Jan 05 09:59:51 EST 2009 | prkonrad
HI, i work for an EMS company and i got a few remarks on the solder mask question. In the manufacturing of PCBs there should be no difference if they use other color solder mask, but in the production of electronic assembly it could make a difference
Electronics Forum | Tue Dec 11 18:32:30 EST 2001 | edmentzer
Does anyone have experience with different colors of solder mask. I am interested to know if a clear or light color mask is better in the reflow process. Most of the boards we do have a green solder mask. It seems to me that I read somewhere that
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