Circuit board with a partial solder-mask and at least one conformal-coating

A circuit board comprising at least one substrate with a first surface, wherein the circuit board comprises at least one conformal-coating arranged to cover at least a portion of the first surface;

• wherein the first surface comprises at least one first solder-pad and at least one second solder-pad, each being arranged to retain at least one electrical connection of an electrical component;
• wherein the first surface comprises at least one third pad;
• wherein the first surface comprises at least one conductive-trace extending between the at least one first solder-pad and the at least one third pad;
• wherein the first surface comprises at least one solder-mask region, arranged to cover at least a portion of the at least one conductive-trace;
• wherein the first surface comprises at least one mask-free region, adjacent to the at least one second solder-pad;
• wherein the at least one conformal-coating is in contact with at least a portion of the first surface in the at least one mask-free region;
• and
• wherein the at least one conformal-coating is in contact with at least a portion of solder-mask in the at least one solder-mask region.