1、BRITISH STANDARD BS EN 61249-2-18:2002 IEC 61249-2-18:2002 Materials for printed boards and other interconnecting structures Part 2-18: Reinforced base materials, clad and unclad Polyester non-woven fibreglass reinforced laminated sheet of defined flammability (vertical burning test), copper-clad Th
2、e European Standard EN 61249-2-18:2002 has the status of a British Standard ICS 31.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61249-2-18:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Commit
3、tee, was published under the authority of the Standards Policy and Strategy Committee on 10 May 2002 BSI 10 May 2002 ISBN 0 580 39607 X National foreword This British Standard is the official English language version of EN 61249-2-18:2002. It is identical with IEC 61249-2-18:2002. The UK participati
4、on 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 60000 adde
5、d 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 European
6、 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 necessar
7、y 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 international/European committee any en
8、quiries 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 21 and a bac
9、k cover. 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 61249-2-18 NORME EUROPENNE EUROPISCHE NORM March 2002 CENELEC European Committee for Electrotechnical Standardization
10、 Comit 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 61249-2-18:2002 E IC
11、S 31.180 English version Materials for printed boards and other interconnecting structures Part 2-18: Reinforced base materials, clad and unclad - Polyester non-woven fibreglass reinforced laminated sheet of defined flammability (vertical burning test), copper-clad (IEC 61249-2-18:2002) Matriaux pou
12、r circuits imprims et autres structures dinterconnexion Partie 2-18 : Matriaux de base renforcs, plaqus et non plaqus - Feuille stratifie renforce de fibres de verre non tisses polyester, dinflammabilit dfinie (essai de combustion verticale), plaque cuivre (CEI 61249-2-18:2002) Materialien fr Leiter
13、platten und andere Verbindungsstrukturen Teil 2-18: Kaschierte und unkaschierte verstrkte Basismaterialien - Kupferkaschierte mit Glaswirrfasern verstrkte Polyesterharz-Laminattafeln definierter Brennbarkeit (Brennprfung mit vertikaler Prflingslage) (IEC 61249-2-18:2002) This European Standard was a
14、pproved by CENELEC on 2002-03-01. 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 bibliographical references concerning such n
15、ational 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 of a CENELEC member into its own lang
16、uage 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, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Por
17、tugal, Spain, Sweden, Switzerland and United Kingdom.Foreword The text of document 91/271/FDIS, future edition 1 of IEC 61249-2-18, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61249-2-18 on 2002-03-01. The f
18、ollowing 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) 2002-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-03-01 Annexes designa
19、ted “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 annex A is informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61249-2-18:20
20、02 was approved by CENELEC as a European Standard without any modification. _ Page2 EN61249218:2002 BSI10May2002CONTENTS 1 Scope.5 2 Normative references5 3 Materials and construction 5 3.1 Insulating base 5 3.2 Metal foil .6 3.3 Reinforcement.6 4 Internal marking6 5 Electrical properties 6 6 Non-el
21、ectrical properties of the copper-clad laminate 6 6.1 Appearance of the copper-clad sheet.6 6.2 Appearance of the unclad face.8 6.3 Laminate thickness8 6.4 Bow and twist 8 6.5 Properties related to the copper foil bond.8 6.6 Punching and machining9 6.7 Dimensional stability9 6.8 Sheet sizes10 6.9 Cu
22、t panels.10 7 Non-electrical properties of the base material after removal of the copper foil11 7.1 Appearance of the dielectric base material.11 7.2 Flexural strength11 7.3 Flammability12 7.4 Water absorption.12 7.5 Measling12 7.6 Glass transition temperature and cure factor12 8 Quality assurance.1
23、3 8.1 Quality system.13 8.2 Responsibility for inspection.13 8.3 Qualification inspection13 8.4 Quality conformance inspection .13 8.5 Certificate of conformance.13 8.6 Safety data sheet.14 9 Packaging and marking.14 10 Ordering information.14 11 Acceptance testing .14 Annex A (informative) Conversi
24、on table for test method numbers .16 Annex ZA (normative) Normative references to international publications with their corresponding European publications 21 Page3 EN61249218:2002 BSI10May2002Table 1 Electrical properties requirements6 Table 2 Nominal thickness and tolerance of metal-clad laminate.
25、8 Table 3 Pull-off and peel strength requirements9 Table 4 Dimensional stability requirements.10 Table 5 Size tolerances for cut panels 10 Table 6 Rectangularity of cut panels.11 Table 7 Flexural strength requirements.12 Table 8 Flammability requirements .12 Table 9 Water absorption requirements 12
26、Table 10 Glass transition temperature and cure factor requirements .13 Table 11 Recommended acceptance tests15 Page4 EN61249218:2002 BSI10May2002MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 2-18: Reinforced base materials, clad and unclad Polyester non-woven fibreglass rein
27、forced laminated sheet of defined flammability (vertical burning test), copper-clad 1 Scope This standard gives requirements for properties of polyester non-woven E-glass reinforced copper-clad laminated sheet, of defined flammability, in thicknesses of 0,80 mm to 1,60 mm. Some property requirements
28、 may have several classes of performance. The class desired must be specified on the purchase order, otherwise the default class of material will be supplied. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only
29、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61189-2:1997, Test methods for electrical materials, interconnection structures and assemblies Part 2: Test methods for materials for interconnection structures Am
30、endment 1: 2000 IEC 61249-5-1:1995, Materials for interconnection structures Part 5: Sectional specification set for conductive foils and films with or without coatings Section 1: Copper Foil (for the manufacture of copper-clad base materials) ISO 9000:2000, Quality management systems Fundamentals a
31、nd vocabulary ISO 11014-1:1994, Safety data sheet for chemical products Part 1: Content and order of sections ISO 14001:1996, Environmental management systems Specification with guidance for use 3 Materials and construction The sheet consists of an insulating base with metal-foil bonded to one side
32、or both. 3.1 Insulating base Polyester non-woven E-glass reinforcement (paper or felt) based laminate. Its flame resistance is defined in terms of the flammability requirements of 7.3. Page5 EN61249218:2002 BSI10May20023.2 Metal foil Copper as specified in IEC 61249-5-1, copper foil (for the manufac
33、ture of copper-clad materials). The preferred foils are electrodeposited, and of defined ductility. 3.3 Reinforcement Non-woven E-glass reinforcement: non-woven E-glass fabric (for the manufacture of copper- clad materials). 4 Internal marking None required. 5 Electrical properties The electrical pr
34、operty requirements are shown in table 1. Table 1 Electrical properties requirements Property Test method (IEC 61189-2) Requirement Resistance of foil 2E12 As specified in IEC 61249-5-1 Surface resistance after damp heat while in the humidity chamber (optional) 2E03 1 000 M Surface resistance 2E03 1
35、0 000 M Volume resistivity after damp heat while in the humidity chamber (optional) 2E04 1 000 M m Volume resistivity after damp heat and recovery 2E04 10 000 M m Relative permittivity 2E10 4,2 Dissipation factor after damp heat and recovery 2E10 0,030 Electric strength (less than 0,5 mm thickness)
36、2E11 To be agreed upon between purchaser and supplier Surface resistance at 125 C 2E07 500 M Volume resistivity at 125 C 2E07 100 M m 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 from defects that may
37、 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 made in accordance with IEC 61189-2 method 2M18. Page6 EN61249218:2002 BSI10May20026.1.1 Indentations (pits and dents) The size of an in
38、dentation, 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 shall be calculated to determine the
39、 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 Wrinkles There shall be no wrinkles
40、 in the copper surface. 6.1.3 Scratches Scratches deeper than 20 % of the nominal thickness of the foil thickness are not permitted. For thick foil the maximum scratch depth shall not exceed 10 m. Scratches with a depth less than 5 % of the nominal thickness of the foil shall not be counted unless t
41、his depth 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 x 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
42、 by blisters or inclusions of foreign particles under the foil. Raised areas caused by blisters or inclusions are not permitted. Page7 EN61249218:2002 BSI10May2002Raised areas that are impressions of defects in press plates are permitted to the following extent: Class A and X material: maximum heigh
43、t 15 m and maximum length 15 mm Class B and C material: maximum height 8 m and maximum length 15 mm Class D material: maximum height 5 m and maximum length 15 mm Class A performance shall be in effect unless otherwise noted on the purchase order. 6.1.5 Surface waviness No requirement. 6.2 Appearance
44、 of the unclad face The unclad face of single-side clad sheet shall have the 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 or release foil used. Variations of gloss due to the im
45、pact of pressure of gases released during the curing are permitted. 6.3 Laminate thickness The laminate thickness may be ordered to include or exclude the copper foil contribution as specified in the purchase order. If the copper-clad laminate is tested in accordance with test method 2D01 of IEC 611
46、89-2, the thickness shall not depart from the nominal thickness by more than the appropriate value shown in table 2. The fine tolerances shall apply unless the other tolerances are ordered. Table 2 Nominal thickness and tolerance of metal-clad laminate Tolerance requirement mm Thickness including me
47、tal foil (material intended for single or double sided boards) Nominal thickness mm Coarse Fine Extra fine 0,80 1,00 1,30 1,60 0,13 0,17 0,20 0,09 0,11 0,13 0,07 0,08 0,10 The thickness and tolerances do not apply to the outer 25 mm of the trimmed master sheet or the outer 13 mm of the cut-to-size p
48、anel as manufactured and delivered by the supplier. At no point shall the thickness vary from the nominal value by a value greater than 125 % of the specified tolerance. 6.4 Bow and twist When the copper-clad laminate is tested in accordance with test method 2M01 of IEC 61189-2, the bow and twist sh
49、all be as agreed upon between purchaser and supplier. 6.5 Properties related to the copper foil bond Pull-off and peel strength requirements are shown in table 3. These requirements apply to copper foil with a normal profile depth. Page8 EN61249218:2002 BSI10May2002Table 3 Pull-off and peel strength requirements Property Test method IEC 61189-2 Requirement Pull-off strength 2M05 As
