Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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SMT electronics assembly manufacturing forum.


Solder mask color variation

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#51513

Solder mask color variation | 22 August, 2007

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 have worked with our PCB supplier however the control of the color remains elusive. Any thoughts?

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#51519

Solder mask color variation | 22 August, 2007

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?

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#51529

Solder mask color variation | 23 August, 2007

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 to do, and no problems like this ever since.

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