1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationMaterials for printed boards and other interconnecting structuresPart 2-27: Reinforced base materials clad and unclad Bismaleimide/triazine modified with non-halogenated epoxide
2、woven glass laminate sheets of defined flammability (vertical burning test), copper-cladBS EN 61249-2-27:2013National forewordThis British Standard is the UK implementation of EN 61249-2-27:2013. It is identical to IEC 61249-2-27:2012.The UK participation in its preparation was entrusted to Technica
3、l Committee EPL/501, Electronic assembly technology b) type of material (see scope and 7.3); c) size, thickness and copper cladding; d) class of indentations (see 6.1.2); e) class of raised areas (see 6.1.5); f) class of thickness tolerance (see 6.3); g) class of dimensional stability (see 6.7); h)
4、class of panel size tolerance (see 6.9.2); i) class of flammability (see 7.3); j) request for certification if applicable (see 8.5). BS EN 61249-2-27:201361249-2-27 IEC:2012 17 Annex A (informative) Engineering information A.1 General Information in this annex does not detail material property requi
5、rements. The information is intended as a general guideline for design and engineering purposes only. If specific information is required by the user, the supplier of the actual material to this standard shall be contacted for that specific engineering information. Users of this standard are encoura
6、ged to supply additional engineering information to be included in future revisions to this annex. Materials according to this standard are expected to show the following typical data for the properties listed. A.2 Chemical properties Resistance against chemicals A.3 Electrical properties Comparativ
7、e tracking index (175 250) V A.4 Flammability properties Needle flame test Oxygen index (50 80) % A.5 Mechanical properties Compressive strength (flatwise) Compressive strength (edgewise) Hardness at room temperature Modulus of elasticity, flexural (warp) 1,9 104N/mm2 Modulus of elasticity, flexural
8、 (weft) 1,5 104N/mm2 Modulus of elasticity, tensile (warp) 1,7 104N/mm2 Modulus of elasticity, tensile (weft) 1,4 104N/mm2 Poissons ratio 0,17 0,21 Shear strength BS EN 61249-2-27:2013 18 61249-2-27 IEC:2012 Youngs modulus (25 30) GPa A.6 Physical properties Density (1,80 2,20) g/cm3A.7 Thermal prop
9、erties Coefficient of thermal expansion (Tg) 200 ppm/C Specific heat capacity Thermal conductivity (0,7 0,9) W/(mC) UL temperature index (mechanical) C (now approving) UL temperature index (electrical) C (now approving) Maximum operating temperature (MOT) C (now approving) BS EN 61249-2-27:201361249
10、-2-27 IEC:2012 19 Annex B (informative) Common laminate constructions Information in this annex does not detail requirements for constructions for specific thicknesses, see Table B.1. The information is intended as a general guideline for design and engineering purposes only. Other constructions wit
11、h superior performance properties may be available commercially for any given thickness. If specific construction information is required by the user, the supplier of the actual material to this standard shall be contacted for that specific construction information. Table B.1 Thickness Nominal thick
12、ness mm Common construction 0,03 1 027 0,04 2 1 015 0,05 2 1 027 0,06 2 1 027 0,10 2 116 0,10 2 1 078 0,15 1 504 0,15 3 1 078 0,20 2 2 116 0,20 4 1 078 0,25 2 116/1 078/2 116 0,30 3 2 116 0,40 4 2 116 0,45 2 2 116/1 078/2 2 116 0,5 5 2 116 0,6 6 2 116 0,7 7 2 116 0,8 8 2 116 0,9 9 2 116 1,0 10 2 116
13、 1,1 11 2 116 1,2 12 2 116 1,3 13 2 116 1,4 14 2 116 1,5 15 2 116 1,6 16 2 116 NOTE Prepreg made from a specific style of glass used in different constructions may have different resin contents. BS EN 61249-2-27:2013 20 61249-2-27 IEC:2012 Annex C (informative) Guideline for qualification and confor
14、mance inspection Information in this annex does not represent requirements for qualification and conformance testing. The Manufacturers Quality System shall define the actual qualification and conformance testing for materials supplied in accordance with this standard. Test data and test summaries s
15、hall be available to support the qualification and conformance testing schemes utilized. In the absence of relevant information in a Manufacturers Quality System, this annex shall be used, see Table C.1. Table C.1 Qualification and conformance testing Property Test method IEC 61189-2 Qualification t
16、esting Conformance testing Conformance frequency Peel strength after thermal shock 2M14 Yes Yes Lot Peel strength at 125 C 2M15 Yes Yes Quarterly Peel strength after solvent vapour 2M06 Yes Yes Quarterly Peel strength after simulated plating 2M16 Yes No Pull off strength 2M05 Yes No Dimensional stab
17、ility 2X02 Yes Yes Monthly Flexural strength 2M08 Yes Yes Annually Flammabilty 2C06 Yes Yes Monthly Thermal stress, unetched 2C05 Yes Yes Lot Solderability 2MXX Yes No Glass transition temperature 2M10 Yes Yes Monthly Cure factor 2M03 Yes No Relative permittivity at 1 MHz after damp heat and recover
18、y 2E10 Yes Yes Monthly Dissipation factor at 1 MHz after damp heat and recovery 2E10 Yes Yes Monthly Surface resistance after damp heat/recovery 2E03 Yes Yes Annually Volume resisitivity after damp heat/recovery 2E04 Yes Yes Annually Arc resistance 2E14 Dielectric breakdown 2E15 Electric strength 2E
19、11 Water absorption 2N02 Yes Yes Quarterly Bow and twist 2M01 Yes Yes Lot Surface waviness 2M12 Yes No Appearance of the dielectric base material See 7.1 Yes Yes Lot BS EN 61249-2-27:201361249-2-27 IEC:2012 21 Bibliography ISO 9000:2005, Quality management systems Fundamentals and vocabulary ISO 140
20、01:2004, Environmental management systems Requirements with guidance for use _ BS EN 61249-2-27:2013This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information
21、 and services. It presents the UK view on standards in Europe and at the international level. BSI is incorporated by Royal Charter. British Standards and other standardisation products are published by BSI Standards Limited.British Standards Institution (BSI)raising standards worldwideBSI389 Chiswic
22、k High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards and PASs are periodically updated by amendment or revision. Users of British Standards and PASs should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality o
23、f our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using British Standards would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside frontcover. Similary for PASs, please notify BSI Customer S
24、ervices.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001BSI offers BSI Subscribing Members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of British Standards and PASs.Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001Email: Buying
25、 standardsYou may buy PDF and hard copy versions of standards directly using acredit card from the BSI Shop on the website addition all orders for BSI, international and foreign standards publicationscan be addressed to BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001Email: I
26、n response to orders for international standards, BSI will supply the British Standard implementation of the relevant international standard, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, Europeanand international standards through its Knowl
27、edge Centre.Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005Email: BSI Subscribing Members are kept up to date with standards developments and receive substantial discounts on the purchase priceof standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8
28、996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards and PASs via British Standards Online can be found at information about British Standards is available on the BSI website at www.bsi- the data, software and documentation set out in all British Standa
29、rds and other BSI publications are the property of and copyrighted by BSI, or some person or entity that own copyright in the information used (such as the international standardisation bodies) has formally licensed such information to BSI for commerical publication and use. Except as permitted unde
30、r the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implem
31、enting the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Department.Tel: +44 (0)20 8996 7070Email:
