Originally published at: https://www.protoexpress.com/blog/6-common-solder-mask-errors-every-pcb-designer-should-know/
A solder mask is an insulation layer that covers conductive areas such as traces and pads. Inappropriate solder layer application may result in solder flowing towards undesired areas, leading to faulty electrical connections and corrosion. In addition to this, solder mask defects can also impact the signal integrity of your high-speed designs by modifying the impedance characteristics of the transmission line. Knowledge of prevalent solder resist defects makes it easier to identify and rectify the solder mask errors during the design phase. You can avoid potential manufacturing errors such as short circuits, incorrect component placement, and weak solder joints. In…