Home>IEC 61249-2-31 : 1.0

IEC 61249-2-31 : 1.0

IEC 61249-2-31 : 1.0

MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES - PART 2-31: REINFORCED BASE MATERIALS, CLAD AND UNCLAD - HALOGENATED MODIFIED OR UNMODIFIED RESIN SYSTEM, WOVEN E-GLASS LAMINATE SHEETS OF DEFINED RELATIVE PERMITTIVITY (EQUAL TO OR LESS THAN 4,1 AT 1 GHZ) AND FLAMMABILITY (VERTICAL BURNING TEST), COPPER-CLAD

International Electrotechnical Committee

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Table of Contents

FOREWORD<br>1 Scope<br>2 Normative references<br>3 Materials and construction<br>&nbsp;&nbsp;&nbsp;3.1 Resin system<br>&nbsp;&nbsp;&nbsp;3.2 Metal foil<br>&nbsp;&nbsp;&nbsp;3.3 Reinforcement<br>4 Internal marking<br>5 Electrical properties<br>6 Non-electrical properties of the copper-clad laminate<br>&nbsp;&nbsp;&nbsp;6.1 Appearance of the copper-clad sheet<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.1 Indentations (pits and dents)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.2 Wrinkles<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.3 Scratches<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.4 Raised areas<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.5 Surface waviness<br>&nbsp;&nbsp;&nbsp;6.2 Appearance of the unclad face<br>&nbsp;&nbsp;&nbsp;6.3 Laminate thickness<br>&nbsp;&nbsp;&nbsp;6.4 Bow and twist<br>&nbsp;&nbsp;&nbsp;6.5 Properties related to the copper foil bond<br>&nbsp;&nbsp;&nbsp;6.6 Punching and machining<br>&nbsp;&nbsp;&nbsp;6.7 Dimensional stability<br>&nbsp;&nbsp;&nbsp;6.8 Sheet sizes<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.8.1 Typical sheet sizes<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.8.2 Tolerances for sheet sizes<br>&nbsp;&nbsp;&nbsp;6.9 Cut panels<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.9.1 Cut panel sizes<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.9.2 Size tolerances for cut panels<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.9.3 Rectangularity of cut panels<br>7 Non-electrical properties of the base material after complete <br>&nbsp;&nbsp;&nbsp;removal of the copper foil<br>&nbsp;&nbsp;&nbsp;7.1 Appearance of the dielectric base material<br>&nbsp;&nbsp;&nbsp;7.2 Flexural strength<br>&nbsp;&nbsp;&nbsp;7.3 Flammability<br>&nbsp;&nbsp;&nbsp;7.4 Water absorption<br>&nbsp;&nbsp;&nbsp;7.5 Measling<br>&nbsp;&nbsp;&nbsp;7.6 Glass transition temperature and cure factor<br>8 Quality assurance<br>&nbsp;&nbsp;&nbsp;8.1 Quality system<br>&nbsp;&nbsp;&nbsp;8.2 Responsibility for inspection<br>&nbsp;&nbsp;&nbsp;8.3 Qualification inspection<br>&nbsp;&nbsp;&nbsp;8.4 Quality conformance inspection<br>&nbsp;&nbsp;&nbsp;8.5 Certificate of conformance<br>&nbsp;&nbsp;&nbsp;8.6 Safety data sheet<br>9 Packaging and marking/labelling<br>10 Ordering information<br>Annex A (informative) - Engineering information<br>Annex B (informative) - Common laminate constructions<br>Annex C (informative) - Guideline for qualification and <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;conformance inspection<br>Bibliography

Abstract

Describes requirements for properties of modified epoxide woven E-glass laminate sheet of a thickness of 0,05 mm up to 3,2 mm, of defined flammability (vertical burning test), copper-clad.

General Product Information

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 91

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