IEC INTERNATIONAL STANDARD 61249-4-2 First edition 2005-09 Materials for printed boards and otherinterconnectingstructures- Part 4-2: Sectional specification set for prepreg materials, unclad-Multifunctionalepoxide wovenE-glass prepreg of defined flammability IEC Referencenumber IEC 61249-4-2:2005(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example, IEC 34-1is now referred to as IEC 60034-1. Consolidated editions The IEc is now publishing consolidated versions of its publications. For example. edition numbers 1.0, 1.1 and 1.2 refer, respectively,to the base publication, the amendments 1 and 2. FurtherinformationonIECpublications The technical content of IEC publications is kept under constant review by the IEC, this.publication, including itsvalidity, is available in the IEc Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: IEc Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (www.iec.ch/online news/ justpub) is also available by email.Please contact the Customer Service Centre (see below) forfurther information. Customer Service Centre If you have any questions regarding this publication or need further assistance. please contact the Customer Service Centre: Email: [email protected] Tel: +41 22 919 02 11 +41229190300 Fax: IEC INTERNATIONAL STANDARD 61249-4-2 First edition 2005-09 Materials for printed boards and other interconnecting structures Part 4-2: Sectional specification set for prepreg materials, unclad-MultifunctionalepoxidewovenE-glass prepreg of defined flammability @IEC 2005—Copyright-all rights reserved mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varembe, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected]: www.iec.ch M PRICE CODE IEC Commission Electrotechnique Internationale nternationalElectrotechnical Commission MekAyHapoAHag3nekTpoTexHuyeckagKomwcCg For price, see current catalogue 61249-4-2IEC:2005(E) -2 CONTENTS FOREWORD 1 Scope 2 Normative references 3 Materials and construction 3.1 Reinforcement. .6 3.2 Resin system. Properties.... 6 4.1 Properties relatedto the appearance ofthe prepreg 4.2 Properties related to B-stage prepreg .. 4.3 Properties related to prepreg after curing 5 Delivery form 5.1 Rolls. 5.2 Sheets... 10 5.3 Cut panels. 6 Quality assurance 10 6.1 Quality system 10 6.2 Responsibilityfor inspection.. 6.3 Qualification inspection ... 6.4 Quality conformance inspection. 10 6.5 Certificate of conformance. 6.6 Safety data sheet . 7 Packaging and marking 11 8 Shelf life 9 Ordering information 1 Table 1-Flammability 3 61249-4-2IEC:2005(E) INTERNATIONALELECTROTECHNICALCOMMISSION MATERIALSFORPRINTED BOARDSAND OTHERINTERCONNECTINGSTRUCTURES Part4-2:Sectional specificationsetforprepregmaterials,unclad - Multifunctional epoxide woven E-glass prepreg of defined flammability- FOREWORD The International Electrotechnical Commission (IEC)is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To Technical Rep