BS EN 61249-2-19-2002 Materials for interconnection structures - Sectional specification set for reinforced base materials clad and unclad - Epoxide cross-plied linear fibreglass-rt.pdf

1、BRITISH STANDARD BS EN 61249-2-19: 2002 IEC 61249-2-19: 2001 Materials for printed boards and other interconnecting structures Part 2-19: Reinforced base materials, clad and unclad Epoxide cross-plied linear fibreglass-reinforced laminated sheets of defined flammability (vertical burning test) coppe

2、r clad The European Standard EN 61249-2-19:2002 has the status of a British Standard ICS 31.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61249-2-19:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strate

3、gy Committee, was published under the authority of the Standards Policy and Strategy Committee on 2 May 2002 BSI 2 May 2002 ISBN 0 580 39578 2 National foreword This British Standard is the official English language version of EN 61249-2-19:2002. It is identical with IEC 61249-2-19:2001. The UK part

4、icipation in its preparation was entrusted to Technical Committee EPL/501, Electronic assembly technology, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 600

5、00 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or E

6、uropean publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the n

7、ecessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries

8、 on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19, and a back cove

9、r. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61249-2-19 NORME EUROPENNE EUROPISCHE NORM February 2002 CENELEC European Committee for Electrotechnical Standardization Co

10、mit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61249-2-19:2002 E ICS 3

11、1.180 English version Materials for printed boards and other interconnecting structures Part 2-19: Reinforced base materials, clad and unclad Epoxide cross-plied linear fibreglass-reinforced laminated sheets of defined flammability (vertical burning test) copper clad (IEC 61249-2-19:2001) Matriaux p

12、our circuits imprims et autres structures dinterconnexion Partie 2-19: Matriaux de base renforcs, plaqus et non plaqus Feuilles multicouches de fibre de verre linaire cohrente avec rsine poxyde pour hautes tempratures, dinflammabilit dfinie (essai dinflammabilit verticale), plaques cuivre (CEI 61249

13、-2-19:2001) Materialien fr Leiterplatten und andere Verbindungsstrukturen Teil 2-19: Kaschierte und unkaschierte verstrkte Basismaterialien - Kupferkaschierte mit kreuzweise angeordnetem Glasfasergelege verstrkte Epoxidharz-Laminattafeln mit definierter Brennbarkeit (Brennprfung mit vertikaler Prfli

14、ngslage) (IEC 61249-2-19:2001) This European Standard was approved by CENELEC on 2002-02-01. 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 standard without any alteration. Up-to-

15、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 other language made by translation und

16、er 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,

17、Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Foreword The text of document 91/264/FDIS, future edition 1 of IEC 61249-2-19, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and wa

18、s approved by CENELEC as EN 61249-2-19 on 2002-02-01. 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) 2002-11-01 latest date by which the national standards conflicting with t

19、he EN have to be withdrawn (dow) 2005-02-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annexes A and B are informative. Annex ZA has been added by CENELEC. _ Endorse

20、ment notice The text of the International Standard IEC 61249-2-19:2001 was approved by CENELEC as a European Standard without any modification. _ Page2 EN61249219:2002 BSI2May2002162-94-219 CEI:0210 3 CONTENTS 1Scope.4 2Normative references.4 3Materials and construction4 3.1Insulating base4 3.2Metal

21、 foil5 4Internal marking. 5 5Electrical properties 5 6Non-electrical properties of the copper-clad laminate. 5 6.1Appearance of the copper-clad sheet 5 6.2Appearance of the unclad face 7 6.3Thickness 7 6.4Bow and twist 7 6.5Properties related to the copper foil bond 8 6.6Punching and machining. 8 6.

22、7Dimensional stability. 8 6.8Sheet sizes. 9 6.9Cut panels. 9 7 Non-electrical properties of the base material after complete removal of the copper foil 9 7.1Appearance of the base material. 9 7.2Flexural strength.10 7.3Flammability10 7.4Water absorption.10 7.5Measling10 7.6Glass transition temperatu

23、re and cure factor.11 8Quality assurance.11 8.1Quality system.11 8.2Responsibility for inspection11 8.3Qualification inspection.11 8.4Quality conformance inspection.11 8.5Certificate of conformance.11 8.6Safety data sheet11 9Packaging and marking12 Annexes13 Page3 EN61249219:2002 BSI2May2002162-94-2

24、19 CEI:0210 9 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 2-19: Reinforced base materials, clad and unclad Epoxide cross-plied linear fibreglass-reinforced laminated sheets of defined flammability (vertical burning test), copper-clad 1 Scope This part of IEC 61249 gives re

25、quirements for properties of epoxide linear fibreglass reinforced copper-clad laminated sheet, of defined flammability with a thickness range from 0,05 mm to 0,40 mm. NOTE Linear fibreglass is defined as all fibres being aligned in one direction (not randomly or perpendicularly aligned). 2 Normative

26、 references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61249. For dated references, subsequent amend- ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on

27、this part of IEC 61249 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid

28、 International Standards. IEC 61189-2:1997, Test methods for electrical materials, interconnection structures and assemblies Part 2: Test methods for materials for interconnection structures IEC 61249-5-1:1995, Materials for interconnection structures Part 5: Sectional specification set for conducti

29、ve foils and films with and without coatings Section 1: Copper foils (for the manufacture of copper-clad base materials) ISO 9000 (all parts), Quality management systems ISO 14001:1996, Environmental management systems Specification with guidance for use ISO 11014-1:1994, Safety data sheet for chemi

30、cal products Part 1: Content and order of sections 3 Materials and construction The sheet consists of an insulating base with metal-foil bonded to one side or both. 3.1 Insulating base Epoxide cross-plied linear fibreglass laminate. Its flame resistance is defined in terms of the flammability requir

31、ements of 7.3. Page4 EN61249219:2002 BSI2May2002162-94-219 CEI:0210 11 3.2 Metal foil Copper as specified in IEC 61249-5-1. The preferred foils are type A (electro-deposited copper) of standard ductility. 4 Internal marking Not specified. 5 Electrical properties The requirements for the electrical p

32、roperties are shown in table 1. Table 1 Electrical properties Property Test method (IEC 61189-2) Requirement Resistance of foil 2E12 As specified in IEC 61249-5-1 Surface resistance, damp heat, steady state while in the humidity chamber (optional) 2E03 10 000 M Surface resistance, damp heat, steady

33、state and recovery 2E03 50 000 M Volume resistivity after damp heat while in the humidity chamber (optional) 2E04 10 000 M m Volume resistivity after damp heat and recovery 2E04 10 000 M m Relative permittivity in “as received“ condition 2E10 The average value shall not exceed 5,5 Dielectric dissipa

34、tion factor in “as received“ condition 2E10 The average value shall not exceed 0,035 Electrical strength 2E11 30 kV/mm Surface resistance at 200 C 2E07 500 M Volume resistivity at 200 C 2E07 1 000 M m 6 Non-electrical properties of the copper-clad laminate 6.1 Appearance of the copper-clad sheet The

35、 copper-clad face shall be substantially free from defects that may have an impact on the material fitness for use for the intended purpose. 6.1.1 Indentations The size of an indentation, usually the length, shall be determined and given a point value to be used as measure of the quality. Page5 EN61

36、249219:2002 BSI2May2002162-94-219 CEI:0210 31 Size Point value 0,13 mm 0,25 mm 1 0,26 mm 0,50 mm 2 0,51 mm 0,75 mm 4 0,76 mm 1,00 mm 7 Over 1,00 mm 30 The total point count for any 300 mm 300 mm area shall be calculated to determine the class indentation of the material. Indentation class A 29 maxim

37、um Indentation class B 17 maximum Indentation class C 5 maximum Indentation class D 0 Indentation class X To be agreed upon by user and supplier The desired class of indentations shall be specified in the order. Indentation Class A applies unless otherwise specified. 6.1.2 Wrinkles There shall be no

38、 wrinkles in the copper surface. 6.1.3 Scratches Scratches deeper than 10 m or 20 % of the nominal thickness of the foil 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 depth is 10 m or more. Scratches

39、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 caused by defects in the press plates used during manufacture but may also be caused by blisters or inclu

40、sions of foreign particles under the foil. Raised areas caused by blisters or inclusions are not permitted. Raised areas caused by impressions of defects in press plates are permitted to the following extent: Indentation class A and X material Indentation class B and C material Indentation class D m

41、aterial Maximum height 15 m and maximum length 15 mm Maximum height 8 m and maximum length 15 mm Maximum height 5 m and maximum length 15 mm Page6 EN61249219:2002 BSI2May2002162-94-219 CEI:0210 51 6.1.5 Surface waviness Not specified. 6.2 Appearance of the unclad face The unclad face of single-sided

42、 clad sheet shall have a natural 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 impact of pressure of gases released during

43、 the curing are permitted. 6.3 Thickness If the copper-clad laminate is tested in accordance with test method 2D01 of IEC 61189-2, the thickness shall not depart from the nominal thickness by more than the appropriate value shown in table 2. The coarse tolerances shall apply unless the fine toleranc

44、es are ordered. Table 2 Nominal thickness and tolerance for laminate Nominal thickness Tolerance + mm mm Coarse (normal) Fine (special) Without foil 0,05 0,11 0,15 0,30 0,40 0,018 0,025 0,038 0,050 0,013 0,018 0,025 0,038 With foil Tolerance value is determined by the nominal base thickness (less cl

45、adding). Tolerance is applied over the base plus cladding with no additional tolerance for cladding thickness allowed. Thickness of foil clad laminate is dependent on the type and weight of copper chosen. The thicknesses and tolerances do not apply to the outer 25 mm of the trimmed sheet or the oute

46、r 13 mm of the cut panel as manufactured and delivered by the supplier. At least 90 % of the area, regardless of size, shall be within the tolerance given, and at no point shall the thickness vary from the nominal by a value greater than 125 % of the specified tolerance. NOTE The standardization of

47、the following values of thickness should be considered: 0,05 mm, 0,10 mm, 0,20 mm and 0,40 mm. 6.4 Bow and twist As agreed upon between purchaser and supplier. NOTE The thin laminates covered by this specification lack the rigidity to retain their shape unless fully supported. The extent of bow and

48、twist is therefore dependent upon the nature of the packaging for shipping or dispatch. Page7 EN61249219:2002 BSI2May2002162-94-219 CEI:0210 71 6.5 Properties related to the copper foil bond Table 3 Pull-off and peel strength Requirement Thickness of the copper foil Property Test method (IEC 61189-2

49、) 18 m (152 g/m 2 ) 35 m (305 g/m 2 or heavier) Pull-off strength 2M05 25 N 25 N 0,5 N/mm 0,6 N/mm Peel strength after heat shock of 20 s 2M14 No blistering nor delamination Peel strength after dry heat at 175 C 2M15 Not specified Not specified Peel strength after exposure to solvent vapour. Solvents as agreed upon between purchaser and supplier 2M06 Not specifie