1、BRITISH STANDARD Materials for printed boards and other interconnecting structure s 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 The European Standard EN 61249-2-
2、19:2002 has the status ofa British Standard ICs 31.180 BS EN 61249-2-19: 2002 IEC 61249-2-19: 2001 Wk present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European development
3、s and promulgate them in the UK. - 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 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of ti
4、me during the change over fi-om one numbering system to the other, publications may contain identifiers from both systems. Cros s-r e fer en ces The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under
5、 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 necessary provisions of a contract. Users of British Standards are responsible for their correct app
6、lication. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19, and a back cover. The BSI copyright date displayed in this document indicates when
7、the document was last issued. O BSI 2 May 2002 ISBN O 580 39578 2 EUROPEAN STANDARD EN 61 249-2-1 9 NORME EUROPENNE EUROPISCHE NORM February 2002 ICs 31.180 English version Materials for printed boards and other interconnecting structures Part 2-19: Reinforced base materials, clad and unclad - Epoxi
8、de cross-plied linear fibreglass-reinforced laminated sheets of defined flammability (vertical burning test) copper clad (IEC 61249-2-19:2001) Matriaux pour circuits imprims et au tres structures din tercon nexion Partie 2-1 9: Matriaux de base renforcs, plaqus et non plaqus - Feuilles multicouches
9、de fibre de verre linaire cohrente avec rsine poxyde pour hautes tempratures, di nflamma bi I it dfi nie (essai di nflamma bi I it verticale), plaques cuivre (CE1 61249-2-19:2001) Materialien fr Leiterplatten und andere Verbindungsstru kturen Teil 2-19: Kaschierte und unkaschierte verstrkte Basismat
10、erialien - Ku pferkaschierte mit kreuzweise angeordnetem Glasfasergelege verstrkte E pox d h arz- La m i n attafel n mit definierter Brennbarkeit (Brennprfung mit vertikaler P r f I i n g s I ag e) (I EC 61 249-2-1 912001) This European Standard was approved by CENELEC on 2002-02-01. CENELEC members
11、 are bound to comply with the CENKENELEC 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 national standards may be obtained on application t
12、o 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 language and notified to the Central Secretariat has t
13、he 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, Portugal, Spain, Sweden, Switzerland and United Kingd
14、om. 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 O 2002 CENELEC - All rights of exploitation in any form and by any means res
15、erved worldwide for CENELEC members. Ref. No. EN 61 249-2-1 9:2002 E Page 2 EN 61249-2-192002 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 was approved by CENE
16、LEC 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 - latest date by which the national standards conflicting with the EN have to be withdrawn (dop
17、) 2002-1 1-01 (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. Endorsement notice The
18、 text of the International Standard IEC 61249-2-19:2001 was approved by CENELEC as a European Standard without any modification. O BSI 2 May 2002 Page 3 EN 61249-2-192002 CONTENTS Scope . Norm at ive ref ere nces . Materials and construction . 3.1 Insulating base . 4 3.2 Metal foil 5 Internal markin
19、g . 5 Electrical properties 5 Non-electrical properties of the copper-clad laminate . 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 Appearance of the copper-clad sheet . Appearance of the unclad face . Thickness . Bow and twist . . 7 . 8 Punching and machining . 8 Dimensional stability . 8 Sheet sizes . 9 Non
20、-electrical properties of the base material after complete removal 7.1 of the copper foil 7.2 Flexural strength . 7.3 Flammability . . IO 7.4 Water absorption . IO 7.5 Measling 10 7.6 Glass transition temperature and cure factor II . Appearance of the base material Qu a I ity assurance 8.1 Quality s
21、yst 8.2 Responsibil 8.3 Qualification inspect ion . 8.4 Quality con 8.5 Certificate of conformance . II 8.6 Safety data sheet . . II Packaging and marking 12 Annexes 13 O BSI 2 May 2002 Page 4 EN 61249-2-192002 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 2-19: Reinforced b
22、ase materials, clad and unclad Epoxide cross-plied linear fi breglass-reinforced laminated sheets of defined flammability (vertical burning test), copper-clad 1 Scope This part of IEC 61249 gives requirements for properties of epoxide linear fibreglass reinforced copper-clad laminated sheet, of defi
23、ned flammability with a thickness range from 0,05 mm to 0,40 mm. NOTE aligned). Linear fibreglass is defined as all fibres being aligned in one direction (not randomly or perpendicularly 2 Normative references The following normative documents contain provisions which, through reference in this text
24、, 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 this part of IEC 61249 are encouraged to investigate the possibility of applying the most recent editi
25、ons of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 61 189-2:1997, Tesf mefhods for elecfrical maferials, inferconnecfion sf
26、rucfures and assemblies Parf 2: Tesf mefhods for maferials for inferconnecfion sfrucfures IEC 61 249-5-1 :I 995, Maferials for inferconnecfion sfrucfures Parf 5: Secfional specificafion sef for conducfive foils and films wifh and wifhouf coafings Secfion 1: Copper foils (for fhe manufacfure of coppe
27、r-clad base maferials) IS0 9000 (all parts), Qualify managemenf sysfems IS0 14001 :I 996, Environmenfal managemenf sysfems Specificafion wifh guidance for use IS0 11014-1:1994, Safefy dafa sheef for chemical producfs Parf 1: Confenf and order of sec fions 3 Materials and construction The sheet consi
28、sts 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 requirements of 7.3. O BSI 2 May 2002 Page 5 EN 61249-2-192002 Surface resistance, damp heat, steady s
29、tate while in the humidity chamber (optional) 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 properties are shown in ta
30、ble 1. 2E03 Table 1 Electrical properties Surface resistance, damp heat, steady state and recovery Volume resistivity after damp heat while in the humidity chamber (optional) Prop e rt y 2E03 2E04 Test method (IEC 61 189-2) Volume resistivity after damp heat and recovery Relative permittivity in “as
31、 received“ condi ti on Requ iremen t 2E04 2E10 Resistance of foil I 2E12 Surface resistance at 200 “C Volume resistivity at 200 “C 2E07 - 500 MQ 2E07 - I O00 MQm Dielectric dissipation factor in “as received“ condition I 2E10 Electrical strength I 2E11 As specified in IEC 61249-5-1 - IO O00 MQ - 50
32、O00 MQ - IO O00 MQm - IO O00 MQm The average value shall not exceed 5,5 The average value shall not exceed 0,035 - 30 kV/mm 6 Non-electrical properties of the copper-clad laminate 6.1 The copper-clad face shall be substantially free from defects that may have an impact on the material fitness for us
33、e for the intended purpose. Appearance of the copper-clad sheet 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. O BSI 2 May 2002 Page 6 EN 61249-2-192002 I Size I Point value 0,13 mm 0,25 mm 0,26 mm
34、0,50 mm 0,51 mm 0,75 mm 0,76 mm 1,OO mm Over 1,OO mm 1 2 4 7 30 The total point count for any 300 mm x 300 mm area shall be calculated to determine the class indentation of the material. Indentation class A 29 maximum Indentation class B 17 maximum Indentation class C 5 maximum Indentation class D O
35、 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 Wr i n kl es There shall be no wrinkles in the copper surface. 6.1.3 Scratches Scratches deeper than 10 pm or 2
36、0 % 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 pm or more. Scratches with a depth between 5 % and 20 % of the nominal thickness of the foil are perm
37、itted 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 caused by defects in the press plates used during manufacture but may also be caused by blisters or inclusions of foreign particles under the foil. Raised areas caused by blisters or
38、 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 material Maximum height 15 pm and maximum length 15 mm Maximum height 8 pm and
39、 maximum length 15 mm Maximum height 5 pm and maximum length 15 mm O BSI 2 May 2002 Page 7 EN 61249-2-192002 Nomi n al th i ck n esc mm - 0,05 5 0,11 0,11 5 0,15 0,15 5 0,30 0,30 5 0,40 Without foil 6.1.5 Surface waviness To I eran ce + mm Coarse (normal) Fine (special) f0,018 f0,013 f0,025 f0,018 f
40、0,038 f0,025 f0,050 f0,038 - Not specified. With foil 6.2 Appearance of the unclad face Tolerance value is determined by the nominal base thickness (less cladding). Tolerance is applied over the base plus cladding with no additional tolerance for cladding thickness allowed. Thickness of foil clad la
41、minate is dependent on the type and weight of copper chosen. The unclad face of single-sided 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,
42、or release foil used. Variations of gloss due to impact of pressure of gases released during the curing are permitted. 6.3 Thickness If the copper-clad laminate is tested in accordance with test method 2D01 of IEC 61 189-2, the thickness shall not depart from the nominal thickness by more than the a
43、ppropriate value shown in table 2. The coarse tolerances shall apply unless the fine tolerances are ordered. Table 2 Nominal thickness and tolerance for laminate The thicknesses and tolerances do not apply to the outer 25 mm of the trimmed sheet or the outer 13 mm of the cut panel as manufactured an
44、d 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 the following values of thickness should be
45、 considered: 0,05 mm, 0,lO 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 twist is therefore dependent upon the natur
46、e of the packaging for shipping or dispatch. O BSI 2 May 2002 Page 8 EN 61249-2-192002 Test method (IEC 61 189-2) 2M05 6.5 Properties related to the copper foil bond Table 3 Pull-off and peel strength Thickness of the copper foil 18 pn 235 pm (152 g/m2) (305 g/m2 or heavier) - 25 N - 25 N I Req ui r
47、ement I Peel strength after dry heat at 175 “C Peel strength after exposure to solvent vapour. Solvents as agreed upon between purchaser and supplier 2M15 Not specified Not specified 2M06 Not specified Not specified Peel strength after heat shock of 20 s Peel strength after simulated plating Peel st
48、rength at high temperature of 125 “C (optional) 2M14 I 0,5 N/mm I - 0,6 N/mm I 2M16 - 0,45 N/mm - 0,45 N/mm 2M17 - 0,5 N/mm - 0,6 N/mm I No blistering nor delamination I I Blistering during heat shock I 2C05 I No blistering nor delamination I NOTE In case of difficulty due to breakage of the foil or
49、 reading range of the force measuring device, the measurement of the peel strength at high temperature may be carried out using conductor widths of more than 6.6 Punching and machining Punching is not applicable. The laminate shall, in accordance with the manufactureris recommendations, be capable of being sheared or drilled. Delamination at the edges due to the shearing process is permissible, provided that the depth of delamination is not larger than the thickness of the base material. Delamination at the edges of drill
