1、Fixed inductors for use in electronic and telecommunicationequipment Marking codesBS EN 61605:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 61605:2017. It is identical to IEC 61605:2016. It s
2、upersedes BS EN 61605:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations represented on this committee can be obtained onrequest to its secretary.This p
3、ublication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 92157 5ICS 29.100.10Compliance with a British Standard cannot confer immun
4、ity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61605:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 616
5、05 February 2017 ICS 29.100.10 Supersedes EN 61605:2005 English Version Fixed inductors for use in electronic and telecommunication equipment - Marking codes (IEC 61605:2016) Inductances fixes utilises dans les quipements lectroniques et de tlcommunications - Codes pour le marquage (IEC 61605:2016)
6、Festinduktivitten fr elektrische und nachrichtentechnische Einrichtungen - Kennzeichnungen (IEC 61605:2016) This European Standard was approved by CENELEC on 2016-11-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europ
7、ean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official vers
8、ions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical com
9、mittees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, S
10、lovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017
11、 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61605:2017 E BS EN 61605:2017EN 61605:2017 2 European foreword The text of document 51/1135/CDV, future edition 3 of IEC 61605, prepared by IEC/TC 51 “Magnetic components, ferrite and
12、 magnetic powder materials“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61605:2017. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-
13、08-30 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-11-30 This document supersedes EN 61605:2005. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall
14、 not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61605:2016 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for
15、the standard indicated : IEC 60063 NOTE Harmonized as EN 60063. BS EN 61605:2017EN 61605:2017 3 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this docu
16、ment and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicate
17、d by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year ISO 8601 - Data elements and interchange formats - Information interchange - Representation
18、 of dates and times - - BS EN 61605:2017 2 IEC 61605:2016 IEC 2016 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references 5 3 Colour code for fixed inductors 5 3.1 General rules 5 3.2 Examples of colour code for fixed inductors 6 4 Digit and letter code for inductance values 7 4.1 General rules 7 4.
19、2 Examples of digit and letter code for inductance values 8 5 Letter code for tolerances of inductance values . 9 5.1 Symmetrical tolerances . 9 5.2 Other tolerances . 9 6 Date code system for fixed inductors . 9 6.1 Single-character code for year and month . 9 6.2 Two-character code for year and mo
20、nth 10 6.3 Four-character code for year and week . 11 Bibliography 12 Figure 1 Example for 47 H 10 % 6 Figure 2 Example for 4,7 H 2 % 7 Figure 3 Example for 4,7 nH 5 %. 7 Table 1 Values corresponding to colours 6 Table 2 Cardinal numbers for the multiplier 7 Table 3 Examples of digit and letter code
21、 for inductance values . 8 Table 4 Letter code for symmetrical tolerance 9 Table 5 Single-character code for year and month for a four-year cycle . 10 Table 6 Code letter for year in a twenty-year cycle . 10 Table 7 Character code letter for month . 11 BS EN 61605:2017IEC 61605:2016 IEC 2016 3 INTER
22、NATIONAL ELECTROTECHNICAL COMMISSION _ FIXED INDUCTORS FOR USE IN ELECTRONIC AND TELECOMMUNICATION EQUIPMENT MARKING CODES FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National
23、 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 activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly
24、Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmenta
25、l organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on tech
26、nical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by I
27、EC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international unifo
28、rmity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5)
29、IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensur
30、e that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of an
31、y nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the refe
32、renced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. Inter
33、national Standard IEC 61605 has been prepared by IEC technical committee 51: Magnetic components and ferrite materials. This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technic
34、al changes with respect to the previous edition: a) The date code system for fixed inductors has been updated. The text of this standard is based on the following documents: CDV Report on voting 51/1135/CDV 51/1147/RVC Full information on the voting for the approval of this standard can be found in
35、the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 61605:2017 4 IEC 61605:2016 IEC 2016 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated
36、on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. BS EN 61605:2017IEC 61605
37、:2016 IEC 2016 5 FIXED INDUCTORS FOR USE IN ELECTRONIC AND TELECOMMUNICATION EQUIPMENT MARKING CODES 1 Scope This document specifies marking codes for fixed inductors. The colour code specified in Clause 3 gives a colour coding for fixed inductors. It is intended for use with the values of the E3 to
38、 E24 series as specified in IEC 60063. The code specified in Clause 4 gives a system for marking inductance values by means of digits and letters. The code specified in Clause 5 gives a system for marking the tolerance on inductance values by means of letters. The code specified in Clause 6 gives a
39、system for marking of date codes on fixed inductors by means of letters and digits. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited appli
40、es. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 8601, Data elements and interchange formats Information interchange Representation of dates and times 3 Colour code for fixed inductors 3.1 General rules Colour codes for fixed inductors
41、 should be expressed in “bands”. If other shapes than bands are applied, the relevant specification shall prescribe their configuration, placement and identification. Colour codes for fixed inductors shall consist of four bands. The first three bands shall indicate inductance values and the last ban
42、d shall indicate tolerances. Inductance values shall be expressed by two significant figures and another figure expressing multipliers. Colour corresponding to significant figures, multipliers and tolerances shall be as given in Table 1. The first two bands represent significant figures and the thir
43、d band specifies the multiplier. The basic unit for the inductance value shall be expressed in H. The first band shall be the one nearest to the end of the inductor and the bands shall be so placed and spaced that there can be no confusion in reading the coding. Any additional coding on fixed induct
44、ors shall be applied in such a way as not to confuse the coding for value and tolerance. BS EN 61605:2017 6 IEC 61605:2016 IEC 2016 Table 1 Values corresponding to colours Colour Significant figure Multiplier Tolerance % Silver 102 10 Gold 101 5 Black 0 100 Brown 1 101 1 Red 2 102 2 Orange 3 103 Yel
45、low 4 104 Green 5 105 Blue 6 106 Violet 7 103 Grey 8 104 White 9 None 20 3.2 Examples of colour code for fixed inductors The examples of colour code for fixed inductors are shown in Figure 1, Figure 2 and Figure 3. Key: 1: 1stband 1stnumeral Yellow = 4 2: 2ndband 2ndnumeral Violet = 7 3: 3rdband Mul
46、tiplier Black = 100 4: 4thband Tolerance Silver = 10 % Figure 1 Example for 47 H 10 % IEC 1 2 3 4 BS EN 61605:2017IEC 61605:2016 IEC 2016 7 Key: 1: 1stband 1stnumeral Yellow = 4 2: 2ndband 2ndnumeral Violet = 7 3: 3rdband Multiplier Gold = 10-14: 4thband Tolerance Red = 2 % Figure 2 Example for 4,7
47、H 2 % Key: 1: 1stband 1stnumeral Yellow = 4 2: 2ndband 2ndnumeral Violet = 7 3: 3rdband Multiplier Grey = 10-44: 4thband Tolerance Gold = 5 % Figure 3 Example for 4,7 nH 5 % 4 Digit and letter code for inductance values 4.1 General rules Nominal inductance values shall be expressed in three characte
48、rs of letters and digits. Where inductance values are equal to, or greater than, 10 H, the first two characters indicate significant figures and the last one indicates multipliers. In this case, cardinal numbers for the multiplier shall be as given in Table 2. Table 2 Cardinal numbers for the multip
49、lier Cardinal number 0 1 2 3 4 5 6 7 8 9 Multiplier 100101102103104105106 IEC 1 2 3 4 IEC 1 2 3 4 BS EN 61605:2017 8 IEC 61605:2016 IEC 2016 Inductance values less than 10 H and equal to, or greater than, 100 nH shall be identified with two numbers representing the significant figures and the letter (R) designating decimal point location H, and the letter (N) designating decimal point loca
