Printed circuit boards were once so simple. One or two layers of copper etched on a rectangular fiberglass substrate, with a ...

The result is a 3D model that is like a solder paste mask combined with a raised border to match the board outline, so that the whole thing self-aligns by fitting on top of the PCB. A handy ...

An insulating pattern applied to a printed circuit board that exposes only the areas to be soldered. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.