Clear Solder Mask

Clear solder mask Solder mask or solder stop mask is a thin lacquer like layer of polymer that is applied to the copper traces of a circuit board for protection against oxidisation and to prevent solder bridges from forming between closely spaced.

Clear solder mask. Or you could fake it with a black resist and silkscreen layer duplicating the trace pattern. What can you do when you find solder mask covering some part of a circuit board where you don t want it. Clear soldermask can be found but not from cheap proto services. Mcl s pcb solder mask options printed circuit board solder mask options from millennium circuits limited are designed to meet your industry needs.

It s certainly not unusual to find test points ground pads or even a component footprint inadvertently covered with solder mask. Coloured fr4 will have significant moq and leadtime forget cheap protos. These grades withstand hard crease of fpc and then enable to maintain the flatness of fpc. A 4 layer board with inner planes and clear soldermask might get you close ish to that appearance though.