1、BSI Standards PublicationMaterials for printed boards and other interconnecting structuresPart 4-18: Sectional specification set for prepreg materials, unclad (for the manufacture of multilayer boards) High performance epoxide woven E-glass prepreg of defined flammability (vertical burning test) for
2、 lead-free assemblyBS EN 61249-4-18:2013National forewordThis British Standard is the UK implementation of EN 61249-4-18:2013. It isidentical to IEC 61249-4-18:2013.The UK participation in its preparation was entrusted to Technical Com-mittee EPL/501, Electronic assembly technology b) manufacturers
3、designation; BS EN 61249-4-18:201361249-4-18 IEC:2013 13 c) lot number; d) date of manufacture; e) quantity; f) dimensions; g) gross weight; h) manufacturers name and address; i) date of packaging. 8 Shelf life Prepreg shall be capable of being stored at either of the described conditions below for
4、the specified time and still be fit for its intended use. Condition 1: Temperature 5 C, relative humidity not specified, minimum 6 months after shipping to the customer. Condition 2: Temperature 20 C, relative humidity 50 %, minimum 3 months after shipment to the customer. Prepreg should not be stor
5、ed in a catalytic environment such as UV light or excessive radiation. Material that has been stored at lower temperature should be allowed to equilibrate to ambient temperature before the packing is opened to avoid condensation of moisture on the prepreg itself. 9 Ordering information The purchase
6、order shall include the following details: a) A reference to this specification b) Type of material c) Size d) Glass style e) The selected thickness parameter and nominal value f) The selected reactivity/rheology parameter and nominal value g) The selected optional parameter and nominal value (if an
7、y) h) Request for certificate of conformance if applicable BS EN 61249-4-18:2013 14 61249-4-18 IEC:2013 Bibliography IEC 60194:2006, Printed board design, manufacture and assembly Terms and definitions IEC 62326-4, Printed boards Part 4: Rigid multilayer printed boards with interlayer connections Se
8、ctional specification _ BS EN 61249-4-18:2013This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization prod
9、ucts are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -base
10、d solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you wi
11、th the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and download PDF versions of BSI publications, including British and adopted European a
12、nd international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.SubscriptionsOur range of subscription services are
13、designed to make using standards easier for you. For further information on our subscription products go to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily
14、so youll always be up to date. You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members.
15、You will automatically receive the latest hard copy of your standards when theyre revised or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intran
16、et. Licences can cover as few or as many users as you wish. With updates supplied as soon as theyre available, you can be sure your documentation is current. For further information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually imp
17、rove the quality of our products and services to benefit your business. If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.CopyrightAll the data, software and documentation set out in all British Standards and other BSI public
18、ations are the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use. Except as permitted under the Copyright, De
19、signs 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. Details and advice can be obtained from the Copyright & Licensing Department.Useful Contacts:Customer ServicesTel: +44 845 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 845 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
