Test methods for electrical materials@ printed boards and other interconnection structures and assemblies – Part 3-301: Test methods for interconnection structures (printed boards) – Appearance inspection method for plated surfaces on PWB (Edition 1.0)
This part of IEC 61189 outlines a way to determine the appearance non-uniformity of both the lustre and colour on plated metal surfaces in printed wiring boards (PWBs). The method is applicable to gold@ nickel and copper plating in PWBs.