1、BSI Standards PublicationPotentiometers for use in electronic equipmentPart 2: Sectional specification Lead-screw actuated and rotary preset potentiometersBS EN 60393-2:2016National forewordThis British Standard is the UK implementation of EN 60393-2:2016. It is identical to IEC 60393-2:2015. It sup
2、ersedes BS QC 410100:1990 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/40X, Capacitors and resistors for electronic equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does n
3、ot purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 73672 8ICS 31.040.20Compliance with a British Standard cannot confer immunity fromlegal obl
4、igations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60393-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60393-2 April 2016 IC
5、S 31.040.20 English Version Potentiometers for use in electronic equipment - Part 2: Sectional specification - Lead-screw actuated and rotary preset potentiometers (IEC 60393-2:2015) Potentiomtres utiliss dans les quipements lectroniques - Partie 2 : Spcification intermdiaire - Potentiomtres dajuste
6、ment multitours et rotatifs (IEC 60393-2:2015) Potentiometer zur Verwendung in Gerten der Elektronik - Teil 2: Rahmenspezifikation - Trimmpotentiometer mit Einstellung durch Gewindespindel oder durch direktes Drehen (IEC 60393-2:2015) This European Standard was approved by CENELEC on 2016-01-18. CEN
7、ELEC 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-date lists and bibliographical references concerning such national standards may be obtained on
8、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 translation under the responsibility of a CENELEC member into its own language and notified to the CE
9、N-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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungar
10、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique
11、 Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60393-2:2016 E BS EN 60393-2:2016EN 60393-2:2016 2 European fore
12、word The text of document 40/2407/FDIS, future edition 3 of IEC 60393-2, prepared by IEC/TC 40“Capacitors and resistors for electronic equipment“ was submitted to the IEC-CENELEC parallel voteand approved by CENELEC as EN 60393-2:2016. The following dates are fixed: latest date by which the document
13、 has to be implemented atnational level by publication of an identical nationalstandard or by endorsement(dop) 2016-10-18 latest date by which the national standards conflicting withthe document have to be withdrawn(dow) 2019-01-18 Attention is drawn to the possibility that some of the elements of t
14、his document may be the subject ofpatent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all suchpatent rights. Endorsement notice The text of the International Standard IEC 60393-2:2015 was approved by CENELEC as a EuropeanStandard without any modification. BS EN 603
15、93-2:2016EN 60393-2:2016 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 document and are indispensable for its application. For dated references,
16、 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, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information
17、 on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60062 - Marking codes for resistors and capacitors EN 60062 - IEC 60068-1 2013 Environmental testing - Part 1: General and guidance EN 60068-1 2014 IEC 6006
18、8-2-1 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: Tests - Test B: Dry heat EN 60068-2-2 2007 IEC 60393-1 2008 Potentiometers for use in electronic equipment - Part 1: Generic specification EN 60393-1 2009 IEC 6119
19、3-2 2007 Quality assessment systems - Part 2: Selection and use of sampling plans for inspection of electronic components and packages EN 61193-2 2007 BS EN 60393-2:2016 2 IEC 60393-2:2015 IEC 2015 CONTENTS FOREWORD . 4 1 General . 6 1.1 Scope . 6 1.2 Normative references 6 1.3 Information to be giv
20、en in a detail specification . 6 1.3.1 General . 6 1.3.2 Outline drawing and dimensions 7 1.3.3 Mounting . 7 1.3.4 Style 7 1.3.5 Resistance law 7 1.3.6 Ratings and characteristics 7 1.3.7 Marking . 8 1.3.8 Ordering information 8 1.3.9 Additional information (not for inspection purposes) . 8 1.4 Mark
21、ing . 8 1.4.1 General . 8 1.4.2 Marking for potentiometers 8 1.4.3 Marking for packaging . 8 1.4.4 Additional marking . 8 2 Preferred ratings, characteristics and test severities 9 2.1 Preferred characteristics . 9 2.1.1 General . 9 2.1.2 Preferred climatic categories . 9 2.1.3 Temperature coefficie
22、nts and temperature characteristics of resistance . 9 2.1.4 Limits for change in resistance or output voltage ratio . 10 2.1.5 Total mechanical travel 11 2.2 Preferred values of ratings 11 2.2.1 General . 11 2.2.2 Nominal total resistance 11 2.2.3 Tolerances on nominal total resistance 12 2.2.4 Rate
23、d dissipation . 12 2.2.5 Limiting element voltage 13 2.2.6 Insulation voltage 13 2.2.7 Limits for insulation resistance . 13 2.3 Preferred test severities 13 2.3.1 General . 13 2.3.2 Drying 13 2.3.3 Vibration 14 2.3.4 Shock 14 2.3.5 Low air pressure 14 2.3.6 Change of temperature 14 3 Quality assess
24、ment procedures . 14 3.1 General . 14 3.2 Definitions. 14 3.2.1 Primary stage of manufacture 14 3.2.2 Structurally similar components . 14 BS EN 60393-2:2016IEC 60393-2:2015 IEC 2015 3 3.2.3 Assessment levels EZ and FZ (zero nonconforming) 15 3.3 Qualification approval . 15 3.3.1 General . 15 3.3.2
25、Qualification approval on the basis of the fixed sample size procedure 15 3.3.3 Tests . 16 3.4 Quality conformance inspection 23 3.4.1 Formation of inspection lots . 23 3.4.2 Test schedule 23 3.4.3 Assessment levels . 23 3.5 Delayed delivery . 26 Bibliography 27 Figure 1 Rated dissipation curve 12 F
26、igure 2 Rated dissipation curve 13 Table 1 Temperature coefficients and temperature characteristics of resistance 10 Table 2 Limits for change in resistance or output voltage ratio . 11 Table 3 Fixed sample size test schedule for qualification approval (1 of 7) . 17 Table 4 Quality conformance inspe
27、ction: Lot-by-lot inspection . 24 Table 5 Quality conformance inspection: Periodic testing (1 of 2). 25 BS EN 60393-2:2016 4 IEC 60393-2:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT Part 2: Sectional specification Lead-screw actuatedand rot
28、ary preset potentiometers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of IEC is to promoteinternational co-operation on all questions concernin
29、g standardization in the electrical and electronic fields. Tothis end and in addition to other activities, IEC publishes International Standards, Technical Specifications,Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IECPublication(s)”). Their prepa
30、ration is entrusted to technical committees; any IEC National Committee interestedin the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closelywit
31、h the International Organization for Standardization (ISO) in accordance with conditions determined byagreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an internationalconsensus of opinion on the relevant subjec
32、ts since each technical committee has representation from allinterested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC NationalCommittees in that sense. While all reasonable efforts are made to ensure that the technical con
33、tent of IECPublications is accurate, IEC cannot be held responsible for the way in which they are used or for anymisinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publicationstransparently to the maximum extent possible
34、 in their national and regional publications. Any divergencebetween any IEC Publication and the corresponding national or regional publication shall be clearly indicated inthe latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformityass
35、essment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for anyservices carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, empl
36、oyees, servants or agents including individual experts andmembers of its technical committees and IEC National Committees for any personal injury, property damage orother damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) andexpenses arising out of the p
37、ublication, use of, or reliance upon, this IEC Publication or any other IECPublications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications isindispensable for the correct application of this publication. 9) Attention is drawn to the possi
38、bility that some of the elements of this IEC Publication may be the subject ofpatent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60393-2 has been prepared by IEC technical committee 40:Capacitors and resistors for electronic equ
39、ipment. This third edition cancels and replaces the second edition published in 1989 and constitutes atechnical revision. This edition includes the following significant technical changes with respect to the previousedition: a) revision of the information on the assessment level EZ and FZ (zero nonc
40、onforming); b) complete editorial revision. BS EN 60393-2:2016IEC 60393-2:2015 IEC 2015 5 The text of this standard is based on the following documents: FDIS Report on voting 40/2407/FDIS 40/2422/RVD Full information on the voting for the approval of this standard can be found in the report onvoting
41、 indicated in the above table. This International Standard is to be used in conjunction with IEC 60393-1:2008. A list of all parts in the IEC 60363 series, published under the general title Potentiometers foruse in electronic equipment, can be found on the IEC website. This publication has been draf
42、ted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged untilthe stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the datarelated to the specific publication. At this date, the publicati
43、on will be reconfirmed, withdrawn, replaced by a revised edition, or amended. BS EN 60393-2:2016 6 IEC 60393-2:2015 IEC 2015 POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT Part 2: Sectional specification Lead-screw actuatedand rotary preset potentiometers 1 General 1.1 Scope This part of IEC 60393 a
44、pplies to lead-screw actuated and rotary preset potentiometers,wirewound and non-wirewound for use in electronic equipment. These potentiometers areprimarily intended for use in circuits for trimming purposes which require infrequentadjustments. This part of IEC 60393 prescribes preferred ratings an
45、d characteristics and selects fromIEC 60393-1 the appropriate quality assessment procedures, tests and measuring methods. Itprovides general performance requirements for this type of potentiometer. This standard gives the minimum performance requirements and test severities. 1.2 Normative references
46、 The following documents, in whole or in part, are normatively referenced in this document andare indispensable for its application. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including anyamendments) applies. IEC 60062
47、, Marking codes for resistors and capacitors IEC 60068-1:2013, Environmental testing Part 1: General and guidance IEC 60068-2-1:2007, Environmental testing Part 2-1: Tests Test A: Cold IEC 60068-2-2:2007, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60393-1:2008, Potentiometers for use
48、 in electronic equipment Part 1: Genericspecification IEC 61193-2:2007, Quality assessment systems Part 2: Selection and use of samplingplans for inspection of electronic components and packages 1.3 Information to be given in a detail specification 1.3.1 General Detail specifications shall be derive
49、d from the relevant blank detail specification. Detail specifications shall not specify requirements inferior to those of the generic, sectionalor blank detail specification. When severer requirements are included, they shall be listed in asubclause of the detail specification and indicated in the test schedules, for example by anasterisk. The information given in 1.3.2 and 1.3.4 may, for convenience, be presented in tabular form. BS EN 60393-2:2016IEC 60393-2:2015 I
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