IEC 61249-2-23:2005

FOREWORD
1 Scope
2 Normative references
3 Materials and construction
   3.1 Resin system
   3.2 Reinforcement
   3.3 Metal foil
4 Internal marking
5 Electrical properties
6 Non-electrical properties of the copper-clad laminate sheet
   6.1 Appearance of the copper-clad sheet
   6.2 Appearance of the unclad face
   6.3 Laminate thickness, including copper foil
   6.4 Bow and twist
   6.5 Properties related to the copper foil bond
   6.6 Punching and machining
   6.7 Dimensional stability
   6.8 Sheet sizes
   6.9 Rectangularity of cut panels
7 Non-electrical properties of the base material after complete
   removal of the copper foil
   7.1 Appearance of the dielectric base material
   7.2 Flexural strength
   7.3 Flammability
   7.4 Water absorption
   7.5 Measling
   7.6 Glass transition temperature and cure factor
8 Quality assurance
   8.1 Quality system
   8.2 Responsibility for inspection
   8.3 Qualification inspection
   8.4 Quality conformance inspection
   8.5 Certificate of conformance
   8.6 Safety data sheet
9 Packaging and marking
10 Ordering information
Annex A (informative) Engineering information
   A.1 Chemical properties
   A.2 Electrical properties
   A.3 Flammability properties
   A.4 Mechanical properties
   A.5 Physical properties
   A.6 Thermal properties

This part of IEC 61249 gives requirements for properties of non-halogenated phenolic cellulose paper copper-clad laminated sheets, economic grade, in thicknesses of 0,8 mm up to 3,2 mm. This standard covers materials with different requirements on flammability and are designated according to the following: Material 61249-2-23-1: general purpose grade, requirement on flammability not specified; Material 61249-2-23-2: materials of defined flammability (vertical burning test). These grades of material provide for one of two flammability requirements and designated as FV0 or FV1 in Table 8.