BS PD IEC/TR 61189-3-914
BS PD IEC/TR 61189-3-914
PD IEC/TR 61189-3-914 Test methods for electrical materials, printed boards and other interconnection structures and assemblies. Part 3-914: Test method for thermal conductivity of printed circuit boards for high-brightness LEDs - Guidelines
standard by BSI Group, 03/31/2017