IEC_62421-2007.pdf

IEC 62421Edition 1.0 2007-08INTERNATIONAL STANDARD Electronics assembly technology Electronic modules IEC 62421:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 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to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month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 62421Edition 1.0 2007-08INTERNATIONAL STANDARD Electronics assembly technology Electronic modules INTERNATIONAL ELECTROTECHNICAL COMMISSION PICS 31.190 PRICE CODEISBN 2-8318-9300-3LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62421 IEC:2007(E)CONTENTS FOREWORD.4 1 Scope and object.6 2 Normative references.6 3 Terms and definitions.7 4 Business model and interface between supplier and user.7 4.1 Business model(see Figure 1 and Figure 2).7 4.1.1 General.7 4.1.2 E-type business model.8 4.1.3 M-type business model.9 4.1.4 F-type business model.9 4.2 S-U interface(see Figure 1).9 4.2.1 S-U interface 1.9 4.2.2 S-U interface2.9 4.2.3 S-U interface3.9 4.3 Standardization areas.9 5 Preferred ratings.10 5.1 General.10 5.2 Preferred operating temperature range.11 5.3 Preferred rated voltage.11 6 Tests and measuring methods.11 6.1 Standard atmospheric conditions.11 6.1.1 Standard atmospheric conditions for testing.11 6.1.2 Referee conditions.11 6.1.3 Reference conditions.12 6.2 Electrical performance tests.12 6.2.1 General.12 6.2.2 Protection of electronic modules and test equipment.12 6.2.3 Accuracy of measurement.12 6.3 Mechanical performance tests.13 6.3.1 Robustness of terminations and integral mounting devices.13 6.3.2 Resistance to soldering heat.14 6.3.3 Solderability.14 6.3.4 Shock.14 6.3.5 Vibration(sinusoidal).14 6.3.6 Resistance to solvents.15 6.4 Climatic performance tests.15 6.4.1 Dry heat.15 6.4.2 Cold.15 6.4.3 Damp heat,steady state.16 6.4.4 Change of temperature.16 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62421 IEC:2007(E)3 Figure 1 S-U interfaces in each business model.8 Figure 2 Standardization areas in M-type and F-type business models.10 Table 1 Preferred temperatures to be selected for temperature ranges(C).11 Table 2 Referee conditions.12 Table 3 Application.14 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.4 62421 IEC:2007(E)INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRONICS ASSEMBLY TECHNOLOGY ELECTRONIC MODULES FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other acti