1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationMaterials for printed boards and other interconnecting structuresPart 2-41: Reinforced base materials clad and unclad Brominated epoxide cellulosepaper/woven E-glass reinforced l
2、aminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assemblyBS EN 61249-2-41:2010National forewordThis British Standard is the UK implementation of EN 61249-2-41:2010. It isidentical to IEC 61249-2-41:2010.The UK participation in its preparation was entrusted to
3、 Technical CommitteeEPL/501, Electronic assembly technology.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI
4、2010ISBN 978 0 580 67279 8ICS 31.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 June 2010.Amendments issued since publicationAmd. No. Date Text affectedBRIT
5、ISH STANDARDBS EN 61249-2-41:2010EUROPEAN STANDARD EN 61249-2-41 NORME EUROPENNE EUROPISCHE NORM May 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix
6、17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61249-2-41:2010 E ICS 31.180 English version Materials for printed boards and other interconnecting structures - Part 2-41: Reinforced base materials clad
7、and unclad - Brominated epoxide cellulose paper/woven E-glass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly (IEC 61249-2-41:2010) Matriaux pour circuits imprims et autres structures dinterconnexion - Partie 2-41: Matriaux de base renfo
8、rcs, plaqus et non plaqus - Feuilles stratifies renforces en tissu de verre de type E/papier cellulose poxyde brom, plaques cuivre, dinflammabilit dfinie (essai de combustion verticale) pour les assemblages sans plomb (CEI 61249-2-41:2010) Materialien fr Leiterplatten und andere Verbindungsstrukture
9、n - Teil 2-41: Kaschierte und unkaschierte verstrkte Basismaterialien - Kupferkaschierte mit Zellulose-Papier und E-Glasgewebe verstrkte Laminattafeln fr bleifreie Fertigung auf der Basis von bromhaltigem Epoxidharz mit definierter Brennbarkeit (Brennprfung mit vertikaler Prflingslage)(IEC 61249-2-4
10、1:2010) This European Standard was approved by CENELEC on 2010-05-01. 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 standard without any alteration. Up-to-date lists and bibliogr
11、aphical 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 other language made by translation under the responsibility o
12、f 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, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany,
13、Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61249-2-41:2010EN 61249-2-41:2010 - 2 - Foreword The text of document 91/911/FDIS, future e
14、dition 1 of IEC 61249-2-41, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61249-2-41 on 2010-05-01. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
15、 rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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) 2011-02-01 latest date by
16、 which the national standards conflicting with the EN have to be withdrawn (dow) 2013-05-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61249-2-41:2010 was approved by CENELEC as a European Standard without any modification. In the official ver
17、sion, for Bibliography, the following note has to be added for the standard indicated: IEC 60194:2006 NOTE Harmonized as EN 60194:2006 (not modified). _ BS EN 61249-2-41:2010- 3 - EN 61249-2-41:2010 Annex ZA (normative) Normative references to international publications with their corresponding Euro
18、pean publications 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 any amendments) applies. NOTE When an international publ
19、ication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 61189-2 2006 Test methods for electrical materials, printed boards and other interconnection structures and assemblies - Part 2: Test methods for materials for int
20、erconnection structures EN 61189-2 2006 IEC 61249-5-1 - Materials for interconnection 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) EN 61249-5-1 - ISO 9000 - Quali
21、ty management systems - Fundamentals and vocabulary - - ISO 11014 - Safety data sheet for chemical products - Content and order of sections - - ISO 14001 - Environmental management systems - Requirements with guidance for use - - BS EN 61249-2-41:2010 2 61249-2-41 IEC:2010 CONTENTS 1 Scope.6 2 Norma
22、tive references6 3 Materials and construction 6 3.1 Resin system.6 3.2 Metal foil .7 3.3 Reinforcement .7 4 Internal marking7 5 Electrical properties 7 6 Non-electrical properties of the copper-clad laminate 7 6.1 Appearance of the copper-clad sheet.7 6.1.1 Indentations (pits and dents)8 6.1.2 Wrink
23、les 8 6.1.3 Scratches 8 6.1.4 Raised areas .8 6.1.5 Surface waviness.9 6.2 Appearance of the unclad face.9 6.3 Laminate thickness9 6.4 Bow and twist 9 6.5 Properties related to the copper foil bond.10 6.6 Punching and machining10 6.7 Dimensional stability11 6.8 Sheet sizes11 6.8.1 Typical sheet size
24、s 11 6.8.2 Tolerances for sheet sizes .11 6.9 Cut panels.11 6.9.1 Cut panel sizes 11 6.9.2 Size tolerances for cut panels 11 6.9.3 Rectangularity of cut panels .12 7 Non-electrical properties of the base material after complete removal of the copper foil12 7.1 Appearance of the dielectric base mater
25、ial.12 7.2 Flexural strength13 7.3 Flammability13 7.4 Water absorption .13 7.5 Measling14 7.6 Glass transition temperature and cure factor14 7.7 Decomposition temperature .14 7.8 Time to delamination (TMA).14 8 Quality assurance .15 8.1 Quality system .15 8.2 Responsibility for inspection.15 8.3 Qua
26、lification inspection15 8.4 Quality conformance inspection .15 8.5 Certificate of conformance.15 8.6 Safety data sheet.16 BS EN 61249-2-41:201061249-2-41 IEC:2010 3 9 Packaging and marking.16 10 Ordering information .16 Annex A (informative) Engineering information .17 Annex B (informative) Common l
27、aminate constructions.19 Annex C (informative) Guideline for qualification and conformance inspection.20 Bibliography21 Table 1 Electrical properties .7 Table 2 Nominal thickness and tolerance of metal-clad laminate.9 Table 3 Bow and twist requirements .9 Table 4 Pull-off and peel strength requireme
28、nts10 Table 5 Dimensional stability11 Table 6 Size tolerances for cut panels 12 Table 7 Rectangularity of cut panels.12 Table 8 Flexural strength requirements.13 Table 9 Flammability requirements .13 Table 10 Water absorption requirements 14 Table 11 Measling requirements.14 Table 12 Glass transitio
29、n temperature and cure factor requirements .14 Table 13 Decomposition temperature requirements 14 Table 14 Time to delamination (TMA) .15 Table C.1 Qualification and conformance inspection .20 BS EN 61249-2-41:2010 6 61249-2-41 IEC:2010 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTUR
30、ES Part 2-41: Reinforced base materials clad and unclad Brominated epoxide cellulose paper/woven E-glass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly 1 Scope This part of IEC 61249 gives requirements for properties of brominated epoxi
31、de cellulose paper 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 a
32、s part of the epoxide polymeric structure. The glass transition temperature is defined to be 100 C minimum. 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. 2 Nor
33、mative 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 any amendments) applies. IEC 61189-2:2006, Test methods
34、for electrical materials, printed boards and other interconnection structures and assemblies Part 2: Test methods for materials for interconnection structures IEC 61249-5-1, Materials for interconnection structures Part 5: Sectional specification set for conductive foils and films with and without c
35、oatings Section 1: Copper foils (for the manufacture of copper-clad base materials) ISO 9000, Quality management systems Fundamentals and vocabulary ISO 14001, Environmental management systems Requirements with guidance for use ISO 11014, Safety data sheet for chemical products Content and order of
36、sections 3 Materials and construction The sheet consists of an insulating base with metal-foil bonded to one side or both. 3.1 Resin system Brominated epoxide, filled or unfilled, resulting in a laminate with a glass transition temperature of 100 C minimum. BS EN 61249-2-41:201061249-2-41 IEC:2010 7
37、 Contrast agents may be added 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 Metal foil Copper as specified in IEC 61249-5-1. The preferred foils are electrodeposited of defined ductility. 3.3 Re
38、inforcement Woven E-glass as it will be specified in future IEC 61249-6-3, woven E-glass fabric (for the manufacture of prepreg and copper clad material) as the surface sheet on each side of a core reinforcement comprised of cellulose paper. 4 Internal marking Not specified. 5 Electrical properties
39、The electrical property requirements are shown in Table 1. Table 1 Electrical properties Property Test method (IEC 61189-2) Requirements Surface resistance after damp heat while in the humidity chamber 2E04 3 000 M Surface resistance after damp heat and recovery (optional) 2E03 30 000 M Volume resis
40、tivity after damp heat while in the humidity chamber 2E04 1 000 Mm Volume resistivity after damp heat and recovery (optional) 2E04 5 000 Mm Relative permittivity after damp heat and recovery (1 MHz) 2E10 5,4 Loss tangent after damp heat and recovery (1 MHz) 2E10 0,045 Arc resistance 2E14 60 s Dielec
41、tric breakdown (only for material thickness 0,60 mm thickness) 2E15 40 kV Surface resistance at 100 C 2E04 1 000 M Volume resistivity at 100 C 2E04 1 00 Mm 6 Non-electrical properties of the copper-clad laminate 6.1 Appearance of the copper-clad sheet The copper-clad face shall be substantially free
42、 from defects that may have an impact on the materials fitness for use for the intended purpose. BS EN 61249-2-41:2010 8 61249-2-41 IEC:2010 For the following specific defects, the requirements given shall apply when inspection is made in accordance with IEC 61189-2, method 2M18. 6.1.1 Indentations
43、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 The total point count for any 300 mm 300 mm area sh
44、all be calculated to determine the class of the material. Class A 29 maximum Class B 17 maximum Class C 5 maximum Class D 0 Class X To be agreed upon by user and supplier The required class of material shall be specified in the purchase order. Class A applies unless otherwise specified. 6.1.2 Wrinkl
45、es There shall be no wrinkles in the copper surface. 6.1.3 Scratches Scratches deeper than 10 m or 20 % of the nominal thickness of the foil thickness, whichever is lower, are not permitted. Scratches with a depth less than 5 % of the nominal thickness of the foil shall not be counted unless this de
46、pth is 10 m or more. Scratches with a depth between 5 % and 20 % of the nominal thickness of the foil are permitted to a total length of 100 mm for a 300 mm 300 mm area. 6.1.4 Raised areas Raised areas are usually impressions in the press plates used during manufacture but may also be caused by blis
47、ters or inclusions of foreign particles under the foil. Raised areas caused by blisters or inclusions are not permitted. Raised areas being impressions of defects in press plates are permitted to the following extent: Class A and X material maximum height 15 m and maximum length 15 mm; Class B and C
48、 material maximum height 8 m and maximum length 15 mm; BS EN 61249-2-41:201061249-2-41 IEC:2010 9 Class D material maximum height 5 m and maximum length 15 mm. 6.1.5 Surface waviness Under consideration. 6.2 Appearance of the unclad face The unclad face of single side clad sheet shall have the natur
49、al appearance resulting from the curing process. Small irregularities in colour are permitted. The gloss of the unclad face shall be that given by the press plate, release film, or release foil used. Variations of gloss due to the impact of pressure of gases released during the curing are permitted. 6.3 Laminate thickness If the copper-clad laminate is tested in accordance with test me
