1、BRITISH STANDARD BS EN 61249-2-26: 2005 interconnecting structures Part 2-26: Reinforced base materials, clad and unclad Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad The European Standard EN 61249-2-26:2005 h
2、as the status of a British Standard ICS 31.180 boards and other Materials for printed BS EN 61249-2-26:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 7 October 2005 BSI 7 October 2005 ISBN 0 580 45926 8 National foreword This British St
3、andard is the official English language version of EN 61249-2-26:2005. It is identical with IEC 61249-2-26:2005. The UK participation in its preparation was entrusted to Technical Committee EPL/501, Electronic assembly technology, which has the responsibility to: A list of organizations represented
4、on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by
5、 using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immuni
6、ty from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in th
7、e UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
8、Date CommentsEUROPEAN STANDARD EN 61249-2-26 NORME EUROPENNE EUROPISCHE NORM March 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 B
9、russels ICS 31.180 English version Materials for printed boards and other interconnecting structures Part 2-26: Reinforced base materials, clad and unclad Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad (IEC 612
10、49-2-26:2005) Matriaux pour circuits imprims et autres structures dinterconnexion Partie 2-26: Matriaux de base renforcs, plaqus et non plaqus Feuilles stratifies renforces en tissu de verre de type poxyde tiss/non tiss, non-halogn, dinflammabilit dfinie (essai de combustion verticale), plaques cuiv
11、re (CEI 61249-2-26:2005) Materialien fr Leiterplatten und andere Verbindungsstrukturen Teil 2-26: Kaschierte und unkaschierte verstrkte Basismaterialien Kupferkaschierte halogenfreie mit E-Glas- Wirrfaser-Innenlagen/E-Glas-Gewebe- Decklagen verstrkte Epoxidharz- Laminattafeln definierter Brennbarkei
12、t (Brennprfung mit vertikaler Prflingslage) (IEC 61249-2-26:2005) This European Standard was approved by CENELEC on 2005-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan
13、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any oth
14、er language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark,
15、Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 2005 CENELEC - All rights of exploitation in any form and by any means reserved
16、 worldwide for CENELEC members. Ref. No. EN 61249-2-26:2005 E EN 61249-2-26:2005 Foreword The text of document 91/496/FDIS, future edition 1 of IEC 61249-2-26, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 612
17、49-2-26 on 2005-02-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow
18、) 2008-02-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61249-2-26:2005 was approved by CENELEC as a European Standard without any modification. _ 2 EN 61249-2-26:2005 3 CONTENTS 1 Scope .7 2 Normative references . .7 3 Materials and construct
19、ion 8 3.1 Resin system8 3.2 Reinforcement 8 3.3 Metal foil 8 4 Internal marking 8 5 Electrical Properties . .8 6 Non-Electrical properties of the copper-clad laminate.9 6.1 Appearance of the copper-clad sheet9 6.2 Appearance of the unclad face11 6.3 Laminate Thickness11 6.4 Bow and twist. 11 6.5 Pro
20、perties related to the copper foil bond12 6.6 Punching and machining.12 6.7 Dimensional stability.12 6.8 Sheet sizes 13 6.9 Cut panels13 7 Non-electrical properties of the base material after complete removal of the copper foil .14 7.1 Appearance of the dielectric base material14 7.2 Flexural Streng
21、th.15 7.3 Flammability 15 7.4 Water absorption .16 7.5 Measling. 16 7.6 Glass transition temperature and cure factor16 8 Quality assurance.16 8.1 Quality system.16 8.2 Responsibility for inspection 17 8.3 Qualification inspection .17 8.4 Quality conformance inspection .17 8.5 Certificate of conforma
22、nce .17 8.6 Safety data sheet 17 9 Packaging and marking .17 10 Ordering information.18Annex A (informative) Engineering information 19 Annex B (informative) Common laminate constructions 21 Annex C (informative) Guideline for qualification and conformance inspection. 22 Annex ZA (normative) Normati
23、ve references to international publications with their corresponding European publications 24Bibliography 23 Table 1 Electrical properties 9 Table 2 Nominal thickness and tolerance of metal-clad laminate11 Table 3 Bow and twist.11 Table 4 Pull-off and peel strength 12 Table 5 Dimensional stability.1
24、3 Table 6 Size tolerance for cut panels.14 Table 7 Rectangularity of cut panels14 Table 8 Flexural strength.15 Table 9 Flammability.15 Table 10 Water absorption.16 Table 12 Glass transition temperature and cure factor.16 4 EN 61249-2-26:2005 Table 11 Measling.16 This publication has been drafted in
25、accordance with the ISO/IEC Directives, Part 2. IEC 61249-2 consists of the following parts, under the general title Materials for printed boards and other interconnecting structures Part 2: Reinforced base materials, clad and unclad: Part 2-1: Phenolic cellulose paper reinforced laminated sheets, e
26、conomic grade, copper clad Part 2-2: Phenolic cellulose paper reinforced laminated sheets, high electrical grade, copper-clad Part 2-4: Polyester non-woven/woven fibreglass laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-5: Brominated epoxide cellulose paper rein
27、forced core/woven E-glass reinforced surfaces laminate sheets of defined flammability (vertical burning test), copper- clad Part 2-6: Brominated epoxide non-woven/woven, E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-7: Epoxide woven E-glass l
28、aminated sheet of defined flammability (vertical burning test), copper-clad Part 2-8: Modified brominated epoxide woven fibreglass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-9: Bismaleimide/triazine, modified epoxide or unmodified, woven E-glass r
29、einforced laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-10: Cyanate ester, brominated epoxide, modified or unmodified, woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper- clad Part 2-11: Polyimide, brominated epoxi
30、de modified or unmodified, woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-12: Epoxide non-woven aramid laminate of defined flammability, copper-clad Part 2-13: Cyanate ester non-woven aramid laminate of defined flammability, copper-clad
31、Part 2-18: Polyester non-woven fibreglass reinforced laminated sheet of defined flammability (vertical burning test), copper-clad Part 2-19: Epoxide cross-plied linear fibreglass-reinforced laminated sheets of defined flam- mability (vertical burning test), copper-clad Part 2-21: Non-halogenated epo
32、xide woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-22: Modified non-halogenated epoxide woven E-glass laminated sheets of defined flammability (vertical burning test), copper-clad Part 2-23: Non-halogenated phenolic, cellulose paper rei
33、nforced laminated sheets, economic grade, copper-clad Part 2-26: Non-halogenated epoxide, nonwoven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad 5 EN 61249-2-26:2005 The committee has decided that the contents of this publication will remain u
34、nchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. EN 61249-2-26:2005 6 MATERIALS FOR PRINTED
35、BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 2-26: Reinforced base materials clad and unclad Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad 1 Scope This part of IEC 61249 gives requirements for properties o
36、f non-halogenated epoxide non- woven/woven reinforced E-glass laminated sheets of defined flammability (vertical burning test), copper-clad in thicknesses of 0,80 mm up to 1,60 mm. The flammability rating is achieved through the use of non-halogenated inorganic and/or organic compounds acting as fir
37、e retardants. These fire retardants are contained as part of polymeric structure or in addition to it. The glass transition temperature is defined to be 95 C minimum. Some property requirements may have several classes of performance. The class desired must be specified on the purchase order, otherw
38、ise the default class of material may be supplied. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
39、any amendments) applies. IEC 60194:1999, Printed board design, manufacture and assembly Terms and definitions IEC 61189-2:1997, Test methods for electrical materials, interconnection structures and assemblies Part 2: Test method for interconnection structures IEC 61249-5-1:1995, Materials for interc
40、onnection structures Part 5: Sectional specification set for conductive foils and films with or without coatings Section 1: Copper foils (for the manufacture of copper-clad base materials) ISO 9000:2000, Quality management systems Fundamentals and vocabulary ISO 11014-1:1994, Safety data sheet for c
41、hemical products Part 1: Content and order of sections ISO 14001:1996, Environmental management systems Specification with guidance for use 7 EN 61249-2-26:2005 3 Materials and construction The sheet consists of an insulating base with metal-foil bonded to one side or both. Refer to IEC 60194 for te
42、rms and definitions. 3.1 Resin system Non-halogenated epoxide with a glass transition temperature of 95 C minimum. The maximum total halogens contained in the resin plus reinforcement matrix is 1 500 10 6with a maximum chlorine of 900 10 6and maximum bromine of 900 10 6. Contrast agents may be added
43、 to enhance processing such as automated optical inspection (AOI). Its flame resistance is defined in terms of the flammability requirements of 7.3. 3.2 Reinforcement Woven E-glass as specified in IEC 61249-6-3, woven E-glass fabric (for the manufacture of prepreg and copper clad materials). Non-wov
44、en E-glass (under consideration and to be defined in a future part of IEC 61249). 3.3 Metal foil Copper as specified in IEC 61249-5-1, copper foil (for the manufacture of copper-clad materials). The preferred foils are electro-deposited of defined ductility. 4 Internal marking Not specified. 5 Elect
45、rical properties The requirements for the electrical properties are shown in Table 1. EN 61249-2-26:2005 8 Table 1 Electrical properties Property Test method (IEC 61189-2) Requirement Resistance of foil 2E12 1As specified in IEC 61249-5-1 Surface resistance after damp heat while in the humidity cham
46、ber (optional) 2E03 5 000 M Surface resistance after damp heat and recovery 2E03 40 000 M Volume resistivity after damp heat while in the humidity chamber (optional) 2E04 5 000 M m Volume resistivity after damp heat and recovery 2E04 10 000 M m Relative permittivity after damp heat and recovery at 1
47、 MHz 2E10 5,4 Dissipation factor after damp heat and recovery at 1 MHz 2E10 0,040 Arc resistance 2E14 60 s Dielectric breakdown (only for material thicknesses 0,8 mm thickness) 2E15 40 kV Surface resistance at 125 C 2E07 1 000 M Volume resistivity at 125 C 2E07 100 M m 6 Non-electrical properties of
48、 the copper-clad laminate 6.1 Appearance of the copper-clad sheet The copper-clad face shall be substantially free from defects that may have an impact on the materials fitness for use for the intended purpose. For the following specific defects the requirements given shall apply when inspection is
49、made in accordance with test method 2M18 2of IEC 61189-2. 6.1.1 Indentations (pits and dents) The size of an indentation, usually the length, shall be determined and given a point value to be used as measure of the quality. Size mm Point value for each indentation 0,13 0,25 1 0,26 0,50 2 0,51 0,75 4 0,76 1,00 7 Over 1,00 30 _
