1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPreferred diameters of wireterminations of capacitors and resistorsBS EN 60301:2012National forewordThis British Standard is the UK implementation of EN 60301:2012. It is identic
2、al to IEC 60301:2012. It supersedes BS 5693:1978 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeEPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.
3、This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 73104 4ICS 31.040; 31.060Compliance with a British Standard cannot co
4、nfer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 October 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60301:2012EUROPEAN STANDARD EN 60301 NORME EUROPENNE EUROPI
5、SCHE NORM October 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 exploitation in any form and by
6、any means reserved worldwide for CENELEC members. Ref. No. EN 60301:2012 E ICS 31.040; 31.060 Supersedes HD 349 S1:1977English version Preferred diameters of wire terminations of capacitors and resistors (IEC 60301:2012) Valeurs prfrentielles des diamtres des fils de sorties des condensateurs et rsi
7、stances (CEI 60301:2012) Bevorzugte Durchmesser fr Anschlussdrhte an Kondensatoren und Widerstnden (IEC 60301:2012) This European Standard was approved by CENELEC on 2012-08-17. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
8、is European 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 offic
9、ial versions (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 electrotechn
10、ical committees 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, S
11、lovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60301:2012EN 60301:2012 - 2 - Foreword The text of document 40/2153/FDIS, future edition 3 of IEC 60301, prepared by IEC/TC 40 “Capacitors and resistors for electronic equipment“ was submitted to the IEC-CENELEC para
12、llel vote and approved by CENELEC as EN 60301:2012. 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) 2013-05-17 latest date by which the national standards conflicting wit
13、h the document have to be withdrawn (dow) 2015-08-17 This document supersedes HD 349 S1:1977. EN 60301:2012 includes the following significant technical changes with respect to HD 349 S1:1977: - employment of SI units only in the normative part of this standard, causing transfer of all imperial dime
14、nsions from Table 1 to the informative Annex A; - addition of two smaller diameters of wire terminations in Table 1; and - tightening of the tolerance ranges defined by minimum and maximum diameters in Table 1. Attention is drawn to the possibility that some of the elements of this document may be t
15、he 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 60301:2012 was approved by CENELEC as a European Standard without any modification. BS EN 60301:2012 2 60301 IEC:
16、2012 CONTENTS 1 Scope . 5 2 Preferred diameters of wire terminations 5 Annex A (informative) Imperial wire dimensions . 6 Table 1 Preferred diameters of wire terminations . 5 Table A.1 Typical imperial wire diameters 6 BS EN 60301:201260301 IEC:2012 5 PREFERRED DIAMETERS OF WIRE TERMINATIONS OF CAPA
17、CITORS AND RESISTORS 1 Scope This International Standard gives a series of preferred diameters of the finished wire terminations of capacitors and resistors for use in electronic equipment. 2 Preferred diameters of wire terminations A series of preferred diameters d of the finished wire terminations
18、 is given in Table 1. Table 1 Preferred diameters of wire terminations Minimum diameter dminmm Nominal diameter d mm Maximum diameter dmaxmm 0,18 0,2 0,22 0,23 0,25 0,27 0,27 0,3 0,33 0,36 0,4 0,43 0,45 0,5 0,53 0,55 0,6 0,63 0,65 0,7 0,73 0,75 0,8 0,83 0,95 1,0 1,03 1,15 1,2 1,23 The nominal or mea
19、n diameter of actual wire terminations may deviate from the listed nominal diameter d, if the actual wire diameter with its tolerance is within the range as defined by the minimum and maximum diameters, dminand dmax, in Table 1. NOTE 1 The presented nominal diameters d are intended to apply to the w
20、ire terminations of finished products. The diameter of the supplied lead wire material may deviate from this recommendation since all processing applied to the wire material takes effect prior to assessment of the wire terminations diameter. NOTE 2 The designer of components with wire terminations a
21、nd the writer of specifications on such products may wish to consider the influence of a wide variation of the diameter of wire terminations on the performance of the respective products, e.g. through the thermal conductivity leading to differences in the thermal management of the component, which p
22、robably influences the result of endurance tests and also the functional lifetime of the respective component. Hence, the designer or writer may decide to prescribe a tighter tolerance window for the wire terminations of the respective product, preferably within the ranges given in this standard. BS
23、 EN 60301:2012 6 60301 IEC:2012 Annex A (informative) Imperial wire dimensions The previous editions of this standard also listed comparable typical wire dimensions as established in the imperial unit system. These dimensions are listed in Table A.1. Table A.1 Typical imperial wire diameters Imperia
24、l nominal wire diameter in Converted metric diameter mm 0,008 0,203 0,010 0,254 0,012 0,305 0,016 0,406 0,020 0,508 0,025 0,635 0,028 0,711 0,032 0,813 0,038 0,965 0,043 1,092 _ BS EN 60301:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body res
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