IEC INTERNATIONAL STANDARD 61249-4-5 First edition 2005-09 Materialsforprintedboardsand otherinterconnectingstructures- Part 4-5: Sectional specification set forprepreg materials, unclad - Polyimide, modified or unmodified, woven E-glass prepreg of defined flammability IEC Referencenumber IEC 61249-4-5:2005(E) Publication numbering As from 1 January 1997all IEC publications are issued with adesignation in the 60000 series.For example, IEC 34-1 is 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 base publication incorporating amendment 1 and the base publication incorporating amendments1and2 FurtherinformationonIECpublications The technical content of IEC publications is kept under constant reviewby theIEC, this publication,including its validity,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 thetechnical 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) Catalogueof IECpublications 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 On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda.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. CustomerServiceCentre If you have any questions regarding this publication or need further assistance, please contactthe CustomerService Centre: Email:[email protected] Tel: +41229190211 Fax: +41229190300 IEC INTERNATIONAL STANDARD 61249-4-5 First edition 2005-09 Materialsforprintedboardsand otherinterconnectingstructures Part 4-5: Sectional specification setforprepreg materials, unclad - Polyimide, modified or unmodified, woven E-glass prepreg of defined flammability ?IEC2005— 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 00E-mail: [email protected] Web: www.iec.ch M PRICE CODE IEC Commission Electrotechnique Internationale International Electrotechnical Commission MexAyHapoAHannekTpoTexHMyeCkanKoMwCCM For price, see current catalogue 61249-4-5IEC:2005(E) 2 CONTENTS FOREWORD. Scope 2 Normative references 3 Materialsand construction. 3.1 Reinforcement. 3.2 Resin system. 6 Properties.. 6 4 4.1 Properties related to the appearance of the prepreg 4.2 Properties related to B-stage prepreg.. 4.3 Properties related to prepreg after curing ... 5 Deliveryform 5.1 Rolls. 5.2 Sheets.. 5.3 Cut panels... 10 Quality assurance.. 6 10 6.1 Quality system.. 10 6.2 Responsibilityforinspection 10 6.3 Qualificationinspection 10 6.4 Qualityconformanceinspection 6.5 Certificate of conformanc 6.6 Safety data sheet 1 Packaging and marking 8 Shelf life 9 Ordering information Bibliography 13 Table 1-Flammability 61249-4-5IEC:2005(E) - 3 - - INTERNATIONALELECTROTECHNICALCOMMISSION MATERIALSFORPRINTEDBOARDSAND OTHERINTERCONNECTINGSTRUCTURES Part4-5:Sectionalspecificationforprepregmaterials,unclad- Polyimide,modifiedorunmodified,wovenE-glassprepreg ofdefinedflammability FOREWORD all national electrotechnical committees (IEC National Committees). TheobjectofIECistopromote this end and in addition to other activities, IEc publishes International Standards, Technical Specifications, Technical Reports, Publicly (PAS)and Guides_(hereafter,referred to as AvailableSpecitications "IEC Publication(s)").Their preparation is entrusted to technical committees; any IEc National Committee inte