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The traditionally green coating which protects copper on PCBs from oxidation and shorting due to solder. Use this tag for PCB design questions and soldering questions which require attention to the mask layer.

6 votes

Super glue as solder mask?

It seems you are confusing the function of solder resists as being some form of electrical insulation rather than being a mask that prevents solder going where it shouldn't. Although not particularly …
Trevor_G's user avatar
  • 47k
5 votes
Accepted

Inconsistent solder mask on vias

Could be sloppy design, could be the solder mask just didn't stick. However, it is generally better practice to relieve the solder mask around vias especially if the board is to be flow soldered. Sol …
Trevor_G's user avatar
  • 47k