IEC_61249-4-14-2009.pdf

IEC 61249-4-14Edition 1.0 2009-05INTERNATIONAL STANDARD Materials for printed boards and other interconnecting structures Part 4-14:Sectional specification set for prepreg materials,unclad(for the manufacture of multilayer boards)Epoxide woven E-glass prepreg of defined flammability(vertical burning test)for lead-free assembly IEC 61249-4-14:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61249-4-14Edition 1.0 2009-05INTERNATIONAL STANDARD Materials for printed boards and other interconnecting structures Part 4-14:Sectional specification set for prepreg materials,unclad(for the manufacture of multilayer boards)Epoxide woven E-glass prepreg of defined flammability(vertical burning test)for lead-free assembly INTERNATIONAL ELECTROTECHNICAL COMMISSION NICS 31.180 PRICE CODEISBN 2-8318-1043-3 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61249-4-14 IEC:2009(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Materials and construction.6 3.1 Reinforcement.6 3.2 Resin system.7 4 Properties.7 4.1 Properties related to the appearance of the prepreg.7 4.1.1 Dewetted areas(fish eyes).7 4.1.2 Broken filaments.7 4.1.3 Distortion.7 4.1.4 Creases.7 4.1.5 Edge conditions.7 4.2 Properties related to B-stage prepreg.7 4.2.1 Resin content.8 4.2.2 Treated weight.8 4.2.3 Resin flow.8 4.2.4 Scaled flow thickness.8 4.2.5 Melting viscosity.8 4.2.6 Gel time.9 4.2.7 Volatile content.9 4.3 Properties related to prepreg after curing.9 4.3.1 Electric strength.9 4.3.2 Flammability.9 4.3.3 Relative permittivity and dissipation factor.10 4.3.4 Cured thickness.10 4.3.5 Glass transition temperature(Tg).10 4.3.6 Decomposition temperature(Td).10 4.3.7 Thermal resistance.11 4.3.8 Z-axis expansion.11 5 Delivery form.11 5.1 Rolls.11 5.2 Sheets.11 5.3 Cut panels.11 6 Quality assurance.12 6.1 Quality system.12 6.2 Responsibility for inspection.12 6.3 Qualification inspection.12 6.4 Quality conformance inspection.12 6.5 Certificate of conformance.12 6.6 Safety data sheet.12 7 Packaging and marking.12 8 Shelf life.13 9 Ordering information.13 Bibliography.14 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61249-4-14 IEC:2009(E)3 Table 1 Flammability,vertical burning test.10 Table 2 Decomposition temperature requirements.10 Table 3 Thermal resistance requirements.11 Table 4 Z-axis expansion requirements.11 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.4 61249-4-14 IEC:2009(E)INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAT