1、BRITISH STANDARD BS EN 61249-2-1:2005 Materials for printed boards and other interconnecting structures Part 2-1: Reinforced base materials, clad and unclad Phenolic cellulose paper reinforced laminated sheets, economic grade, copper clad The European Standard EN 61249-2-1:2005 has the status of a B
2、ritish Standard ICS 31.180 BS EN 61249-2-1:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 August 2005 BSI 9 August 2005 ISBN 0 580 45936 5 National foreword This British Standard is the official English language version of EN 61249-2-
3、1:2005. It is identical with IEC 61249-2-1:2005. 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 on this committee can be obtained on request to its secretary. C
4、ross-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 using the “Search” facility of the BSI Electronic Catalogue or
5、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 immunity from legal obligations. aid enquirers to understand the text;
6、 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 the UK. Summary of pages This document comprises a front cover, an
7、 inside front cover, the EN title page, pages 2 to 15 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. Date CommentsEUROPEAN STANDARD EN 61249-2-1 NORME EUROPENNE EUROPISCHE NORM March 2005
8、 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels ICS 31.180 English version Materials for printed boards and other interconnecti
9、ng structures Part 2-1: Reinforced base materials, clad and unclad Phenolic cellulose paper reinforced laminated sheets, economic grade, copper clad (IEC 61249-2-1:2005) Matriaux pour circuits imprims et autres structures dinterconnexion Partie 2-1: Matriaux de base renforcs, plaqus et non plaqus Fe
10、uilles stratifies renforces de papier cellulose phnolique, de qualit conomique, plaques cuivre (CEI 61249-2-1:2005) Materialien fr Leiterplatten und andere Verbindungsstrukturen Teil 2-1: Kaschierte und unkaschierte verstrkte Basismaterialien Kupferkaschierte Phenolharz- Hartpapiertafeln wirtschaftl
11、icher Qualitt (IEC 61249-2-1:2005) 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 standard without any alteration. Up
12、-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 other language made by translation
13、 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, Estonia, Finland, France, Germa
14、ny, 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 worldwide for CENELEC members.
15、 Ref. No. EN 61249-2-1:2005 E EN 61249-2-1:2005 2 Foreword The text of document 91/493/FDIS, future edition 1 of IEC 61249-2-1, prepared by IEC TC 91, Electronics assembly technology, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61249-2-1 on 2005-02-01. The follow
16、ing 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) 2008-02-01 Annex ZA has been ad
17、ded by CENELEC. _ Endorsement notice The text of the International Standard IEC 61249-2-1:2005 was approved by CENELEC as a European Standard without any modification. _ 3 EN 61249-2-1:2005 CONTENTS 1 Scope 5 2 Normative references .5 3 Materials and construction6 3.1 Resin system.6 3.2 Reinforcemen
18、t.6 3.3 Metal foil .6 4 Internal marking .6 5 Electrical properties7 6 Non-electrical properties of the copper-clad laminate sheet .7 6.1 Appearance of the copper-clad sheet .7 6.1.1 Indentations (pits and dents) 7 6.1.2 Wrinkles 8 6.1.3 Scratches 8 6.1.4 Raised areas .8 6.1.5 Surface waviness.8 6.2
19、 Appearance of the unclad face.8 6.3 Laminate thickness, including copper foil .9 6.4 Bow and twist9 6.5 Properties related to the copper foil bond.10 6.6 Punching and machining10 6.7 Dimensional stability10 6.8 Sheet sizes .10 6.8.1 Typical sheet sizes 10 6.8.2 Tolerances for sheet sizes .11 6.9 Cu
20、t panels.11 6.9.1 Size tolerance for cut panels 11 6.9.2 Rectangularity of cut panels .11 7 Non-electrical properties of the base material after complete removal of the copper foil 11 7.1 Appearance of the dielectric base material .11 7.2 Flexural strength .11 7.3 Flammability12 7.3.1 Material 61249
21、-2-1-112 7.3.2 Material 61249-2-1-212 7.4 Water absorption .12 7.5 Measling .12 7.6 Glass transition temperature and cure factor 12 8 Quality assurance.13 8.1 Quality system.13 8.2 Responsibility for inspection 13 8.3 Qualification inspection13 8.4 Quality conformance inspection .13 8.5 Certificate
22、of conformance .13 8.6 Safety data sheet 13 9 Packaging and marking 13 10 Ordering information.14 EN 61249-2-1:2005 4 Annex ZA (normative) Normative references to international publications with their corresponding European publications15 Table 1 Electrical properties.7 Table 2 Nominal thickness and
23、 tolerance of metal-clad laminate .9 Table 3 Bow and twist.9 Table 4 Pull-off and peel strength.10 Table 5 Size tolerance for cut panels11 Table 6 Rectangularity of cut panels.11 Table 7 Flexural strength .11 Table 8 Flammability, vertical burning test12 Table 9 Water absorption.12 5 EN 61249-2-1:20
24、05 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 2-1: Reinforced base materials, clad and unclad Phenolic cellulose paper reinforced laminated sheets, economic grade, copper clad 1 Scope This part of IEC 61249 gives requirements for properties of phenolic cellulose paper rei
25、nforced copper-clad laminated sheets, economic grade in thicknesses of 0,8 mm up to 3,2 mm. This standard covers materials with different requirements on flammability, designated according to the following: Material 61249-2-1-1: general purpose grade, requirement on flammability not specified (see 7
26、.3.1); Material 61249-2-1-2: materials of defined flammability (vertical burning test) (see 7.3.2). These grades of material cover one of two flammability requirements, designated as FV0 or FV1 and shown in Table 8. Some property requirements may have several classes of performance. The class desire
27、d should be specified on the purchase order, otherwise 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 la
28、test edition of the referenced document (including any amendments) applies. IEC 60194:1999, Printed board design, manufacture and assembly Terms and definitions IEC 61189-2:1997, Test methods for electrical materials, printed boards and other interconnection structures and assemblies Part 2: Test me
29、thods for materials for inter- connection structures IEC 61249-5-1:1995, Materials for interconnecting structures Part 5: Sectional specification set for conductive foils and films with and without coatings Section 1: Copper foils (for the manufacture of copper-clad base materials) ISO 9000:2000, Qu
30、ality management systems Fundamentals and 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 EN 61249-2-1:2005 6 3 Materials and construction The sheet consist
31、s of an insulating base with metal foil bonded to one or both sides. Refer to IEC 60194 for terms and definitions. 3.1 Resin system Phenolic resin. 3.2 Reinforcement Cellulose paper (under consideration and to be defined in a future part of IEC 61249). 3.3 Metal foil Copper foil as specified in IEC
32、61249-5-1. The preferred foils are Type A (electro-deposited copper) of standard ductility. 4 Internal marking Each sheet should bear a manufacturers identification mark that is as follows: a) in black or some other colour not to be confused with red, for material 61249-2-1-1 and in red for material
33、 61249-2-1-2; b) repeated at intervals so that no part of the sheet is further than 75 mm from the furthest point of the mark; c) printed so as to indicate the machine direction of filling material, if letters or numbers are used, these shall be upright or at right angles in the machine direction. E
34、xamples: Machine direction 7 EN 61249-2-1:2005 5 Electrical properties The requirements for the electrical properties are shown in Table 1. Table 1 Electrical properties Property Test method (IEC 61189-2) Requirements Resistance of foil 2E12 1As specified in IEC 61249-5-1 Surface resistance after da
35、mp heat while in the humidity chamber (optional) 2E03 100 M Surface resistance after damp heat and recovery 2E03 1 000 M Volume resistivity after damp heat while in the humidity chamber (optional) 2E04 10 Mm Volume resistivity after damp heat and recovery 2E04 100 Mm Surface corrosion 2E08 No visibl
36、e corrosion products In the gap Corrosion at the edge 2E13 Positive pole: not worse than A/B Negative pole: not worse than 1,8 Relative permittivity after damp heat and recovery 2E10 5,5 Dissipation factor after damp heat and recovery 2E10 0,1 Surface resistance at 100 C 2E03 15 M Volume resistivity
37、 at 100 C 2E04 10 Mm 6 Non-electrical properties of the copper-clad laminate sheet 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 defec
38、ts, the requirements given shall apply when inspection is 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 valu
39、e 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 1Under consideration. EN 61249-2-1:2005 8 The total point count for any 300 mm x 300 mm area shall be calculated to determine the indentation class. Indentation class A: 29 maximum total point count Indentation class
40、 B: 17 maximum total point count Indentation class C: 5 maximum total point count Indentation class D: 0 total point count Indentation class X: to be agreed upon by user. The desired class of indentations shall be specified in the purchase order. Indentation Class A applies unless otherwise specifie
41、d. 6.1.2 Wrinkles There shall be no wrinkles on 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,
42、 unless this 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 300 mm area. 6.1.4 Raised areas Raised areas are usually impressions caused by defects in the press plates during manufacture bu
43、t may also be caused by blisters or inclusions of foreign particles under the foil. Raised areas caused by impressions of defects in the press plates are permitted to the following extent: Indentation class A and X material: maximum height 15 m and maximum length 15 mm; Indentation class B and C mat
44、erial: maximum height 8 m and maximum length 15 mm; Indentation class D material: maximum height 5 m and maximum length 15 mm. 6.1.5 Surface waviness Not specified. 6.2 Appearance of the unclad face The unclad face of single-sided clad sheets shall have the natural appearance resulting from the curi
45、ng process. Small irregularities in color 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 the curing are permitted. 9 EN 61249-2-1:2005 6.3 Laminate thickness
46、, including copper foil When the copper-clad laminate is tested in accordance with test method 2D01 of IEC 61189-2, the thickness, including the copper foil, shall not depart from the nominal thickness by more than the appropriate value shown in Table 2. The coarse tolerances shall apply unless the
47、fine tolerances are ordered. Table 2 Nominal thickness and tolerance of metal-clad laminate Tolerance mm Nominal thickness mm Coarse Fine 0,8 1,0 1,2 1,5 1,6 2,0 2,4 3,2 0,15 0,17 0,18 0,20 0,20 0,23 0,25 0,30 0,09 0,11 0,12 0,14 0,14 0,15 0,18 0,20 NOTE For thicknesses not included in this table, t
48、he nearest greater tolerance applies. The thicknesses and tolerances do not apply to the outer 25 mm of the trimmed sheet or the outer 13 mm of the cut-to-size panel as manufactured and delivered by the supplier. At least 90 % of the area, regardless of size, shall be within the tolerance given, and
49、 at no point shall the thickness vary from the nominal 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 shall not exceed the values given in Table 3. Table 3 Bow and twist Requirement % Nomi
