1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHigh Frequency InductiveComponents Fixed surface mount inductors for use in electronic and telecommunication equipmentBS EN 62674-1:2012National forewordThis British Standard is
2、the UK implementation of EN 62674-1:2012. It is identical to IEC 62674-1:2012.The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations represented on this committee can be obtained
3、on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013 ISBN 978 0 580 71128 2 ICS 29.100.10 Compliance with
4、a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 62674-1:2012EUROPEAN STANDARD EN 62674
5、-1 NORME EUROPENNE EUROPISCHE NORM December 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploi
6、tation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62674-1:2012 E ICS 29.100.10 English version High frequency inductive components - Part 1: Fixed surface mount inductors for use in electronic and telecommunication equipment (IEC 62674-1:2012) Composants inducti
7、fs haute frquence - Partie 1: Inductances fixes pour montage en surface utilises dans les matriels lectroniques et les quipements de tlcommunications (CEI 62674-1:2012) Induktive Hochfrequenzbauelemente - Teil 1: Oberflchenmontierbare Festinduktivitt fr den Einsatz in Elektronik und Telekommunikatio
8、nsgerten (IEC 62674-1:2012) This European Standard was approved by CENELEC on 2012-11-16. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-dat
9、e 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 versions (English, French, German). A version in any other language made by translat
10、ion 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 committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denm
11、ark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 6267
12、4-1:2012EN 62674-1:2012 - 2 - Foreword The text of document 51/1006/FDIS, future edition 1 of IEC 62674-1, prepared by IEC TC 51, “Magnetic components and ferrite materials“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62674-1:2012. The following dates are fixed: late
13、st date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-08-16 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-11-16 Attention is drawn to the possibil
14、ity that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62674-1:2012 was approved by CENELEC as a European Standar
15、d without any modification. BS EN 62674-1:2012- 3 - EN 62674-1:2012 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 document and are indispensable f
16、or 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
17、 applies. Publication Year Title EN/HD Year IEC 60068-1 + corr. October 1988 1988 Environmental testing - Part 1: General and guidance EN 60068-11) 1994 IEC 60068-2-1 2007 Environmental testing - Part 2-1: Tests - Test A: Cold EN 60068-2-1 2007 IEC 60068-2-2 2007 Environmental testing - Part 2-2: Te
18、sts - Test B: Dry heat EN 60068-2-2 2007 IEC 60068-2-14 2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature EN 60068-2-14 2009 IEC 60068-2-45 - Environmental testing - Part 2: Tests - Test Xa and guidance: Immersion in cleaning solvents EN 60068-2-45 - IEC 60068-2-58 2004 E
19、nvironmental testing - Part 2-58: Tests - Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) EN 60068-2-58 + corr. December 2004 2004 IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - Test Cab: Damp he
20、at, steady state EN 60068-2-78 - IEC 61605 2005 Fixed inductors for use in electronic and telecommunication equipment - Marking codes EN 61605 2005 IEC 62024-1 + corr. July 2008 2008 High frequency inductive components - Electrical characteristics and measuring methods - Part 1: Nanohenry range chip
21、 inductor EN 62024-1 2008 IEC 62024-2 2008 High frequency inductive components - Electrical characteristics and measuring methods - Part 2: Rated current of inductors for DC to DC converters EN 62024-2 2009 IEC 62025-2 2005 High frequency inductive components - Non-electrical characteristics and mea
22、suring methods - Part 2: Test methods for non-electrical characteristics EN 62025-2 2005 IEC 62211 2003 Inductive components - Reliability management EN 62211 2004 ISO 3 - Preferred numbers - Series of preferred numbers - - 1) EN 60068-1 includes A1 to IEC 60068-1+ corr. October . BS EN 62674-1:2012
23、EN 62674-1:2012 - 4 - Publication Year Title EN/HD Year ISO 3599 - Vernier callipers reading to 0,1 and 0,05 mm - - ISO 3611 - Geometrical product specifications (GPS) - Dimensional measuring equipment: Micrometers for external measurements - Design and metrological characteristics EN ISO 3611 - ISO
24、 6906 - Vernier callipers reading to 0,02 mm - - BS EN 62674-1:2012 2 62674-1 IEC:2012 CONTENTS 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Designation 7 5 Shape . 9 6 Dimensions 10 6.1 Shape D 10 6.2 Shape K 11 6.3 Tolerance for outline dimensions . 11 7 Ratings and charact
25、eristics. 11 7.1 Nominal inductance or impedance . 11 7.2 Tolerance for nominal inductance or impedance 12 7.3 Operating temperature range . 12 8 Marking 13 9 Direction marking or shape of polarity. 13 10 Tests and performance requirements 14 10.1 Standard atmospheric conditions for testing 14 10.1.
26、1 Standard atmospheric conditions for measurements and tests . 14 10.1.2 Referee condition 14 10.2 Visual examination and check of dimensions . 14 10.2.1 Visual examination 14 10.2.2 Dimensions 14 10.3 Electrical performance tests 15 10.3.1 Inductance . 15 10.3.2 Q . 18 10.3.3 Impedance . 22 10.3.4
27、Self-resonant frequency . 22 10.3.5 DC resistance 24 10.3.6 Rated current 25 10.4 Mechanical performance tests . 25 10.4.1 Mounting to substrate 25 10.4.2 Body strength test . 25 10.4.3 Robustness of terminations (electrodes) 25 10.4.4 Solderability 26 10.4.5 Resistance to soldering heat 26 10.4.6 R
28、esistance to dissolution of metallization 26 10.4.7 Vibration 27 10.4.8 Resistance to shock 27 10.5 Environmental and climatic tests . 27 10.5.1 Cold 27 10.5.2 Dry heat 28 10.5.3 Change of temperature 29 10.5.4 Damp heat (steady state) 29 10.5.5 Component solvent resistance . 30 BS EN 62674-1:201262
29、674-1 IEC:2012 3 Bibliography 31 Figure 1 Shapes of inductor and ferrite beads (examples) 9 Figure 2 Example of circuit for measurement by the bridge method 15 Figure 3 Example of circuit for measurement by the vector voltage/current method 16 Figure 4 Example of a circuit for measurement by the aut
30、omatic balancing bridge method . 17 Figure 5 Example of circuit for measurement by the series resonance method . 19 Figure 6 Example of a circuit for measurement by the parallel resonance method 20 Figure 7 Tuning characteristics of inductor . 20 Figure 8 Example of circuit for measurement by the mi
31、nimum output method . 23 Figure 9 Example of measuring circuit for DC resistance . 24 Table 1 Letter code for inductance value 8 Table 2 Dimensions for shape D 10 Table 3 Dimensions of height for shape D (R 20 series) . 10 Table 4 Dimensions of height for shape D less than 1,00 mm 10 Table 5 Dimensi
32、ons for shape K 11 Table 6 Tolerance for outline dimension and height . 11 Table 7 E 24 series for nominal inductance or impedance 12 Table 8 Tolerance for nominal inductance or impedance 12 Table 9 Temperatures to be selected for operating temperature ranges . 12 Table 10 User reference / Examples
33、of application and operating temperature range . 13 Table 11 Electrical performance . 26 Table 12 Combined test conditions for cold 28 Table 13 Combined test conditions for dry heat 28 Table 14 Test conditions for change of temperature . 29 Table 15 Test conditions for damp heat (steady state) . 30
34、BS EN 62674-1:2012 6 62674-1 IEC:2012 HIGH FREQUENCY INDUCTIVE COMPONENTS Part 1: Fixed surface mount inductors for use in electronic and telecommunication equipment 1 Scope This part of IEC 62674 applies to fixed surface mount inductors and ferrite beads. The object of this standard is to define th
35、e terms necessary to describe the inductors covered by this standard, provide recommendations for preferred characteristics, recommended performance, test methods and general guidance. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document an
36、d 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. IEC 60068-1:1988, Environmental testing Part 1: General and guidance IEC 60068-2-1:2007, Environmen
37、tal testing Part 2-1: Tests Test A: Cold IEC 60068-2-2:2007, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60068-2-14:2009, Environmental testing Part 2-14: Tests Test N: Change of temperature IEC 60068-2-45, Basic environmental testing procedures Part 2-45: Tests Test XA and guidance:
38、Immersion in cleaning solvents IEC 60068-2-58:2004, Environmental testing Part 2-58: Tests Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) IEC 60068-2-78, Environmental testing Part 2-78: Tests Test Cab: Damp
39、 heat, steady state IEC 61605:2005, Fixed inductors for use in electronic and telecommunication equipment Marking codes IEC 62024-1:2008, High frequency inductive components Electrical characteristics and measuring methods Part 1: Nanohenry range chip inductor IEC 62024-2:2008, High frequency induct
40、ive components Electrical characteristics and measuring methods Part 2: Rated current of inductors for DC to DC converters IEC 62025-2:2005, High frequency inductive components Non-electrical characteristics and measuring methods Part 2: Test methods for non-electrical characteristics IEC 62211:2003
41、, Inductive components Reliability management BS EN 62674-1:201262674-1 IEC:2012 7 ISO 3:1973, Preferred numbers Series of preferred numbers ISO 3599, Vernier callipers reading to 0,1 and 0,05 mm ISO 3611, Geometrical product specifications (GPS) Dimensional measuring equipment: Micrometers for exte
42、rnal measurements Design and metrological characteristics ISO 6906, Vernier callipers reading to 0,02 mm 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 rated current maximum current which may be loaded continuously by inductors at the rated
43、temperature Note 1 to entry: A DC saturation limited current value or a temperature rise limited current value, whichever is less, has been adopted as the rated current (see IEC 62024-2:2008, Clause 7). 3.2 operating temperature range category temperature range range of ambient temperatures for whic
44、h the inductor has been designed to operate continuously Note 1 to entry: Unless otherwise specified in the detail specification, the operating temperature is ambient temperature plus temperature rise of components. 4 Designation It is recommended to express the designation of the fixed surface moun
45、t inductors by the following 12 digits format. In the case of another format, designation shall be specified in the detail specifications. The designation of ferrite beads shall be specified in the detail specifications. a) Identification of the type of inductor Fixed surface mount inductors shall b
46、e identified by the three alphabetic characters LCL. b) Indication of outline dimensions The outline dimensions of the surface mount inductor shall be indicated by a four-digit number based on two significant figures for each dimension of L and W (or H). As for the dimensions of shape D, the first t
47、wo digits indicate the longer side dimension L, and the last two digits indicate the shorter side dimension W, as shown in Figure 1. As for the dimensions of shape K, the first two digits indicate the outline dimension L, and the last two digits indicate the height dimension H. c) Indication of shap
48、e A single alphabetic character as given in Figure 1 indicates the shape for fixed surface mount inductors. e) d) c) b) a) BS EN 62674-1:2012 8 62674-1 IEC:2012 The shape codes are classified by the base shape of inductors. D: rectangular K: square d) Indication of nominal inductance Three alphanume
49、ric characters specified in IEC 61605:2005, Clause 4, indicate the nominal inductance value (see Table 1). Table 1 Letter code for inductance value Inductance values Digit and letter code 0,1 nH 0,47 nH 1 nH 4,7 nH 10 nH 47 nH 0,1 H 0,47 H 1 H 4,7 H 10 H 47 H 100 H 470 H 1 mH 4,7 mH 10 mH 47 mH 100 mH 470 mH 1 H 4,7 H 10 H 47 H N10 N
