IEC_60938-1-2006.pdf

INTERNATIONALSTANDARD IEC60938-1 QC 280000Edition 2.12006-11 Fixed inductors for electromagnetic interference suppression Part 1:Generic specification Reference number IEC 60938-1:1999+A1:2006(E)Edition 2:1999 consolidated with amendment 1:2006 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation 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 amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to 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 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(http:/www.iec.ch/searchpub/cur_fut.htm)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committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued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(http:/www.iec.ch/online_news/justpub/jp_entry.htm)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.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.INTERNATIONAL STANDARD IEC60938-1 QC 280000Edition 2.12006-11 Fixed inductors for electromagnetic interference suppression Part 1:Generic specification IEC 2006 Copyright-all rights reserved 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 the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch CG For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission Edition 2:1999 consolidated with amendment 1:2006 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60938-1 IEC:1999+A1:2006(E)CONTENTS FOREWORD.4 1 General.6 1.1 Scope.6 1.2 Normative references.6 2 Technical data.8 2.1 Units and symbols.8 2.2 Definitions.8 2.3 Preferred values.11 2.4 Marking.11 3 Quality assessment procedures.11 3.1 General.11 3.2 Primary stage of manufacture.11 3.3 Structurally similar inductors.11 3.4 Qualification approval procedures.11 3.5 Quality conformance inspection.12 3.6 Alternative test methods.12 3.7 Unchecked parameters.13 4 Test and measurement procedure.13 4.1 General.13 4.2 Standard atmospheric conditions.13 4.3 Drying.14 4.4 Visual examination and check of dimensions.14 4.5 Insulation resistance.16 4.6 Voltage proof.18 4.7 Inductance.21 4.8 Insertion loss.21 4.9 Robustness of terminations.21 4.10 Resistance to soldering heat.22 4.11 Solderability(applicable only for terminations intended to be soldered).23 4.12 Rapid change of temperature.23 4.13 Vibration.24 4.14 Bump.24 4.15 Shock.24 4.16 Container sealing.24 4.17 Climatic sequence.25 4.18 Damp heat,steady state.26 4.19 Temperature rise.26 4.20 Endurance.27 4.21 Passive flammability.27 4.22 Active flammability.28 4.23 Solvent resistance of marking.28 4.24 Component solvent resistance.28 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60938-1 IEC:1999+A1:2006(E)3 Annex A(normative)Interpretation of sampling plans and procedures as described in IEC 60410 for use within the IEC quality assessment system for electronic components(IECQ).29 Annex B(normative)Rules for the preparation of detail specifications for capacitors and resistors for electronic equipment.30 Annex C(normative)Requirements for earth inductors.31 Figure 1 Voltage proof test circuit.19 Table 1 Reference test:standard atmospheric conditions.14 Table 2 Creepage distances a