IEC 61249-5-1:1995

Materials for interconnection structures - Part 5: Sectional specification set for conductive foils and films with and without coatings - Section 1: Copper foils (for the manufacture of copper-clad base materials)

IEC 61249-7-1:1995

Materials for interconnection structures - Part 7: Sectional specification set for restraining core materials - Section 1: Copper/invar/copper