{"id":419710,"date":"2024-10-20T06:27:15","date_gmt":"2024-10-20T06:27:15","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61249-2-422010-2\/"},"modified":"2024-10-26T12:03:30","modified_gmt":"2024-10-26T12:03:30","slug":"bs-en-61249-2-422010-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61249-2-422010-2\/","title":{"rendered":"BS EN 61249-2-42:2010"},"content":{"rendered":"
This part of IEC 61249 gives requirements for properties of brominated epoxide non-woven reinforced core\/woven E-glass reinforced surface laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly in thicknesses of 0,60 mm up to 1,70 mm. The flammability rating is achieved through the use of brominated fire retardants reacted as part of the epoxide polymeric structure. The glass transition temperature is defined to be 105 \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 will be supplied.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | 1 Scope 2 Normative references 3 Materials and construction 3.1 Resin system <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 3.2 Metal foil 3.3 Reinforcement 4 Internal marking 5 Electrical properties 6 Non electrical properties of the copper-clad laminate 6.1 Appearance of the copper-clad sheet Tables Table 1 \u2013 Electrical properties <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 6.2 Appearance of the unclad face 6.3 Laminate thickness 6.4 Bow and twist Table 2 \u2013 Nominal thickness and tolerance of metal-clad laminate Table 3 \u2013 Bow and twist requirements <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 6.5 Properties related to the copper foil bond 6.6 Punching and machining Table 4 \u2013 Pull-off and peel strength requirements <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 6.7 Dimensional stability 6.8 Sheet sizes 6.9 Cut panels Table 5 \u2013 Dimensional stability <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 7 Non electrical properties of the base material after complete removal of the copper foil 7.1 Appearance of the dielectric base material Table 6 \u2013 Size tolerances for cut panels Table 7 \u2013 Rectangularity of cut panels <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 7.2 Flexural strength 7.3 Flammability Table 8 \u2013 Flexural strength requirements Table 9 \u2013 Flammability requirements <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 7.4 Water absorption 7.5 Measling 7.6 Glass transition temperature and cure factor 7.7 Decomposition temperature Table 10 \u2013 Water absorption requirements Table 11 \u2013 Measling requirements Table 12 \u2013 Glass transition temperature and cure factor requirements Table 13 \u2013 Decomposition temperature requirements <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 7.8 Time to delamination (TMA) 8 Quality assurance 8.1 Quality system 8.2 Responsibility for inspection 8.3 Qualification inspection 8.4 Quality conformance inspection Table 14 \u2013 Time to delamination (TMA) <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 8.5 Certificate of conformance 8.6 Safety data sheet 9 Packaging and marking 10 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 <\/td>\n<\/tr>\n | ||||||
22<\/td>\n | Annex C (informative) Guideline for qualification and conformance inspection Table C.1 \u2013 Qualification and conformance inspection <\/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. Brominated epoxide non-woven \/ woven E-glass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly<\/b><\/p>\n |