This part of IEC 61249 gives requirements for properties of non-halogenated epoxide modified cyanate ester woven glass laminate of defined flammability (vertical burning test), copper-clad in thicknesses of 0,03 mm up to 1,60 mm. The flammability rating is achieved through the use of non-halogenated inorganic and\/or organic compounds acting as fire retardants. These fire retardants are contained as part of polymeric structure or in addition to it. The glass transition temperature is defined to be 160 \u00b0C minimum.<\/p>\n
Some property requirements may have several classes of performance. The class desired should be specified on the purchase order, otherwise the default class of material may be supplied.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Materials and construction 3.1 General 3.2 Resin system <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3.3 Reinforcement 3.4 Metal foil 4 Internal marking 5 Electrical properties 6 Non-electrical properties of the copper-clad laminate 6.1 Appearance of the copper-clad sheet 6.1.1 General Tables Table 1 \u2013 Electrical properties <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6.1.2 Indentations (pits and dents) 6.1.3 Wrinkles 6.1.4 Scratches 6.1.5 Raised areas Table 2 \u2013 Indentations <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 6.1.6 Surface waviness 6.2 Appearance of the unclad face 6.3 Laminate thickness Table 3 \u2013 Nominal thickness and tolerance of metal-clad laminate <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 6.4 Bow and twist 6.5 Properties related to the copper foil bond 6.6 Punching and machining Table 4 \u2013 Bow and twist Table 5 \u2013 Pull-off and peel strength <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6.7 Dimensional stability 6.8 Sheet sizes 6.8.1 Typical sheet sizes 6.8.2 Tolerances for sheet sizes 6.9 Cut panels 6.9.1 Cut panel sizes 6.9.2 Size tolerances for cut panels Table 6 \u2013 Dimensional stability <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6.9.3 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 Table 7 \u2013 Size tolerance for cut panels Table 8 \u2013 Rectangularity of cut panels <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.2 Flexural strength 7.3 Flammability 7.4 Water absorption Table 9 \u2013 Flexural strength Table 10 \u2013 Flammability <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.5 Measling 7.6 Glass transition temperature and cure factor 8 Quality assurance 8.1 Quality system Table 11 \u2013 Water absorption Table 12 \u2013 Measling Table 13 \u2013 Glass transition temperature and cure factor <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 8.2 Responsibility for inspection 8.3 Qualification inspection 8.4 Quality conformance inspection 8.5 Certificate of conformance 8.6 Safety data sheet 8.7 Packaging and marking <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 9 Ordering information <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (informative) Engineering information <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex B (informative) Common laminate constructions Table B.1 \u2013 Thickness <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex C (informative) Guideline for qualification and conformance inspection Table C.1 \u2013 Qualification and conformance testing <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Materials for printed boards and other interconnecting structures – Reinforced base materials clad and unclad. Non-halogenated epoxide modified cyanate ester woven glass laminate of defined flammability (vertical burning test), copper-clad<\/b><\/p>\n |