Potentiometers for use in electronic equipment - Part 5: Sectional specification - Single-turn rotary low-power wirewound and non-wirewound potentiometers

IEC 60393-5:2015 applies to single-turn rotary low-power wirewound and non-wirewound potentiometers, with a rated dissipation less than to 10 W. These potentiometers are primarily intended for use in electronic equipment. This part of IEC 60393 prescribes preferred ratings and characteristics and selects from IEC 60393-1, appropriate quality assessment procedures, tests and measuring methods. It provides general performance requirements for this type of potentiometer. This standard gives the minimum performance requirements and test severities. This edition includes the following significant technical changes with respect to the previous edition:
a) revision of the information on the assessment level EZ and FZ (zero nonconforming);
b) complete editorial revision.
This publication is to be read in conjunction with IEC 60393-1:2008.

Potentiomètres utilisés dans les équipements électroniques - Partie 5: Spécification intermédiaire - Potentiomètres de faible puissance, bobinés et non bobinés, rotatifs, monotour

L'IEC 60393-5:2015 s'applique aux potentiomètres de faible puissance, bobinés et non bobinés, rotatifs, monotour avec une dissipation assignée inférieure à 10 W. Ces potentiomètres sont principalement conçus pour être utilisés dans des équipements électroniques. La présente partie de l'IEC 60393 prescrit des valeurs assignées et des caractéristiques préférentielles et sélectionne dans l'IEC 60393-1 des procédures d'assurance de la qualité, des essais et des méthodes de mesure appropriés. Elle donne les exigences de performances générales pour ce type de potentiomètre. La présente norme donne les exigences de performances et les sévérités d'essais minimales. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) révision des informations sur les niveaux d'assurance EZ et FZ (zéro non-conformité);
b) révision éditoriale complète.
Cette publication doit être lue conjointement avec la IEC 60393-1:2008.

General Information

Status
Published
Publication Date
13-Dec-2015
Current Stage
PPUB - Publication issued
Start Date
14-Dec-2015
Completion Date
14-Dec-2015
Ref Project

Buy Standard

Standard
IEC 60393-5:2015 - Potentiometers for use in electronic equipment - Part 5: Sectional specification - Single-turn rotary low-power wirewound and non-wirewound potentiometers
English and French language
65 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC 60393-5
Edition 3.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Potentiometers for use in electronic equipment –
Part 5: Sectional specification – Single-turn rotary low-power wirewound and
non-wirewound potentiometers
Potentiomètres utilisés dans les équipements électroniques –
Partie 5: Spécification intermédiaire – Potentiomètres de faible puissance,
bobinés et non bobinés, rotatifs, monotour
IEC 60393-5:2015-12(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2015 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, 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

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite

ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and

Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15

documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International

iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in

variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions

committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries

and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: csc@iec.ch.
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 60 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC

en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et

comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus

projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just

Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette

Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:

csc@iec.ch.
---------------------- Page: 2 ----------------------
IEC 60393-5
Edition 3.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Potentiometers for use in electronic equipment –
Part 5: Sectional specification – Single-turn rotary low-power wirewound and
non-wirewound potentiometers
Potentiomètres utilisés dans les équipements électroniques –
Partie 5: Spécification intermédiaire – Potentiomètres de faible puissance,
bobinés et non bobinés, rotatifs, monotour
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.040.20 ISBN 978-2-8322-3059-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60393-5:2015  IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 4

1 General ........................................................................................................................... 6

1.1 Scope ..................................................................................................................... 6

1.2 Normative references .............................................................................................. 6

1.3 Information to be given 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 ................................................................................................................ 8

1.3.5 Resistance law ................................................................................................ 8

1.3.6 Ratings and characteristics .............................................................................. 8

1.3.7 Marking ........................................................................................................... 8

1.3.8 Ordering information ........................................................................................ 8

1.3.9 Additional information ...................................................................................... 8

1.4 Marking ................................................................................................................... 9

1.4.1 General ........................................................................................................... 9

1.4.2 Marking for potentiometers .............................................................................. 9

1.4.3 Marking for packaging ..................................................................................... 9

1.4.4 Additional marking ........................................................................................... 9

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 coefficients and temperature characteristics of resistance ......... 10

2.1.4 Limits for change in resistance or output voltage ratio ................................... 11

2.1.5 Limits for insulation resistance ....................................................................... 12

2.1.6 Limits for resistance law ................................................................................ 12

2.1.7 Limits for starting torque ................................................................................ 13

2.1.8 Limits for switch torque .................................................................................. 13

2.2 Preferred values of ratings .................................................................................... 13

2.2.1 General ......................................................................................................... 13

2.2.2 Nominal total resistance ................................................................................ 14

2.2.3 Tolerances on nominal total resistance .......................................................... 14

2.2.4 Rated dissipation ........................................................................................... 14

2.2.5 Limiting element voltage ................................................................................ 15

2.2.6 Insulation voltage .......................................................................................... 15

2.2.7 Switch rating (if applicable) ............................................................................ 15

2.3 Preferred test severities ........................................................................................ 15

2.3.1 General ......................................................................................................... 15

2.3.2 Drying ............................................................................................................ 16

2.3.3 Vibration ........................................................................................................ 16

2.3.4 Shock ............................................................................................................ 16

3 Quality assessment procedures ..................................................................................... 16

3.1 General ................................................................................................................. 16

3.2 Definitions............................................................................................................. 16

3.2.1 Primary stage of manufacture ........................................................................ 16

---------------------- Page: 4 ----------------------
IEC 60393-5:2015  IEC 2015 – 3 –

3.2.2 Structurally similar components ..................................................................... 16

3.2.3 Assessment levels EZ and FZ (zero non-conforming) .................................... 17

3.3 Qualification approval ........................................................................................... 17

3.3.1 General ......................................................................................................... 17

3.3.2 Qualification approval on the basis of the fixed sample size procedure .......... 17

3.3.3 Tests ............................................................................................................. 17

3.4 Quality conformance inspection ............................................................................ 27

3.4.1 Formation of inspection lots ........................................................................... 27

3.4.2 Test schedule ................................................................................................ 27

3.4.3 Assessment levels ......................................................................................... 27

3.5 Delayed delivery ................................................................................................... 31

Annex A (normative) Test methods for sealing ..................................................................... 32

A.1 Container sealing test for container sealed styles only .......................................... 32

A.2 Shaft and panel sealing test for all styles .............................................................. 32

Bibliography .......................................................................................................................... 33

Figure 1 – Outline drawing and dimensions ............................................................................. 7

Figure 2 – Rated dissipation curve ........................................................................................ 14

Figure 3 – Rated dissipation curve (examples of smaller area).............................................. 15

Figure A.1 – Component under test....................................................................................... 32

Table 1 – Temperature coefficients and temperature characteristics of resistance for

non-wirewound potentiometers ............................................................................................. 10

Table 2 – Temperature coefficients and temperature characteristics of resistance for

wirewound potentiometers .................................................................................................... 11

Table 3 – Preferred combination of limits .............................................................................. 12

Table 4 – Preferred measuring points and values of output ratio for non-wirewound

potentiometers ...................................................................................................................... 13

Table 5 – Preferred measuring points and values of output ratio for wirewound

potentiometers ...................................................................................................................... 13

Table 6 – Fixed sample size test schedule for qualification approval (1 of 8) ......................... 19

Table 7 – Quality conformance inspection: Lot-by-lot (1 of 2) ................................................ 27

Table 8 – Quality conformance inspection: Periodic testing (1 of 3)....................................... 29

---------------------- Page: 5 ----------------------
– 4 – IEC 60393-5:2015  IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT –
Part 5: Sectional specification – Single-turn rotary low-power
wirewound and non-wirewound potentiometers
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National 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 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-

governmental 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 technical 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 IEC 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 uniformity, 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) 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 ensure 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 any 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 referenced 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.

International Standard IEC 60393-5 has been prepared by IEC technical committee 40:

Capacitors and resistors for electronic equipment.

This third edition cancels and replaces the second edition published in 1992 and constitutes a

technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) revision of the information on the assessment level EZ and FZ (zero nonconforming);

b) complete editorial revision.
---------------------- Page: 6 ----------------------
IEC 60393-5:2015  IEC 2015 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
40/2408/FDIS 40/2423/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting 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 for

use in electronic equipment, can be found on the IEC website.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated 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.
---------------------- Page: 7 ----------------------
– 6 – IEC 60393-5:2015  IEC 2015
POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT –
Part 5: Sectional specification – Single-turn rotary low-power
wirewound and non-wirewound potentiometers
1 General
1.1 Scope

This part of IEC 60393 applies to single-turn rotary low-power wirewound and non-wirewound

potentiometers, with a rated dissipation less than to 10 W. These potentiometers are primarily

intended for use in electronic equipment.

This part of IEC 60393 prescribes preferred ratings and characteristics and selects from

IEC 60393-1, appropriate quality assessment procedures, tests and measuring methods. It

provides general performance requirements for this type of potentiometer.
This standard gives the minimum performance requirements and test severities.
1.2 Normative references

The following documents, in whole or in part, are normatively referenced in this document 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.
IEC 60062, 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 in electronic equipment – Part 1: Generic

specification

IEC 60915, Capacitors and resistors for use in electronic equipment – Preferred dimensions

of shaft ends, bushes and for the mounting of single-hole, bush-mounted, shaft-operated

electronic components

IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling

plans 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 derived from the relevant blank detail specification.

Detail specifications shall not specify requirements inferior to those of the generic, sectional

or blank detail specification. When more severe requirements are included, they shall be

listed in a subclause of the detail specification and indicated in the test schedules, for

example by an asterisk.
---------------------- Page: 8 ----------------------
IEC 60393-5:2015  IEC 2015 – 7 –

The information given in 1.3.3 and 1.3.4 may, for convenience, be presented in tabular form.

The following information shall be given in each detail specification and the values quoted

shall preferably be selected from those given in the appropriate clause of this sectional

specification.
1.3.2 Outline drawing and dimensions

The detail specification shall incorporate an illustration of the potentiometer being specified.

Where space is insufficient to show the detail dimensions required for inspection purposes,

such dimensions shall appear on a drawing forming an annex to the detail specification, as

shown in Figure 1.
IEC
Figure 1 – Outline drawing and dimensions
The drawing shall give the following details:

– the dimensions of the shaft and bush. These may be given either on the outline drawing or

by reference to IEC 60915;
– any locating devices;
– the total mechanical travel;
– the effective electrical travel;
– the angle of ineffective mechanical travel;
– the switch angle (if applicable);
– the dimensions of the switch, if fitted, and the location of terminations;

– the dimensions which shall be measured in accordance with IEC 60393-1:2008, 4.4.2;

– any other dimensional information which will adequately describe the potentiometer.

All dimensions shall preferably be stated in millimetres, however, when the original

dimensions are given in inches, the converted metric dimensions in millimetres shall be added.

When the potentiometer is not designed for use on printed boards, this shall be clearly

indicated in the detail specification.
1.3.3 Mounting

The detail specification shall specify the method of mounting to be applied for the voltage

proof and the insulation resistance tests and for the application of the vibration and shock

tests. The potentiometers shall be mounted by their normal means, but the design may be

such that special mounting fixtures are required. In this case, the detail specification shall

describe the mounting fixtures that shall be used for the voltage proof and the insulation

---------------------- Page: 9 ----------------------
– 8 – IEC 60393-5:2015  IEC 2015

resistance tests and for the application of the vibration and shock tests. For the latter tests

the mounting shall be such that there shall be no parasitic vibration.
1.3.4 Style
See IEC 60393-1:2008, 2.2.2.

The style shall be presented by a double-letter code, e.g. AB, which is arbitrarily chosen for

each detail specification.

The style designation, therefore, has no meaning unless the number of the detail specification

is also given.
1.3.5 Resistance law
See 2.1.6.
1.3.6 Ratings and characteristics
1.3.6.1 General

The ratings and characteristics shall be in accordance with the relevant clauses of this

specification together with the following:
1.3.6.2 Nominal total resistance range
See IEC 60393-1:2008, 2.3.2

When products approved according to the detail specification have different ranges, the

following statement should be added:

“The range of values available in each style is given in the register of approvals, available for

www.iecq.org”.
example on the website http://

The qualified products list “QPL” style is given in the register of approvals, available for

example on the website stated above.
1.3.7 Marking

The detail specification shall specify the content of the marking on the potentiometer and on

the package. Deviations from 1.4 of this sectional specification shall be specifically stated.

1.3.8 Ordering information

The detail specification shall indicate that the following information, in clear or in coded form,

is required when ordering:
a) nominal total resistance and tolerance on nominal total resistance;
b) resistance law (if other than linear);
c) number and issue reference of the detail specification and style reference;
d) shaft and bush dimensions, if not implicit in the style reference.
1.3.9 Additional information

The detail specification may include information which is not required to be verified by the

inspection procedure, such as circuit diagrams, curves, drawings and notes needed for the

clarification of the detail specification.
---------------------- Page: 10 ----------------------
IEC 60393-5:2015  IEC 2015 – 9 –
1.4 Marking
1.4.1 General

When coding is used for nominal resistance, tolerance and date of manufacture, the method

shall be selected from those given in IEC 60062.

The information given in the marking is normally selected from the following list; the relative

importance of each item is indicated by its position in the list:
a) nominal total resistance;
b) tolerance on nominal total resistance;
c) resistance law (if other than linear);
d) detail specification and style reference;
e) year and month (or week) of manufacture;

f) details of shaft and bush (if not implicit in d) above). This may be in code form;

g) manufacturer's name and/or trademark;
h) switch rated voltage (a.c. and d.c. ratings when appropriate);
i) switch rated current (a.c. and d.c. ratings when appropriate);

j) corresponding terminals (in the case of double pole switches), and terminals for

connection to the mains supply;
k) manufacturer’s type and designation.
1.4.2 Marking for potentiometers

The potentiometer shall be clearly marked with a) and b) of 1.4.1 and with as many of the

remaining items as is practicable. Any duplication of information in the marking of the

potentiometer should be avoided.
The switch, if fitted, shall be clearly marked with h), i) and j) of 1.4.1.
1.4.3 Marking for packaging

The package containing the potentiometer(s) shall be clearly marked with a) to g) and, if a

switch is fitted to the potentiometer, with h) and i) of 1.4.1, and with the information below.

a) quantity
b) country origin
1.4.4 Additional marking
Any additional marking shall be so applied that no confusion can arise.
2 Preferred ratings, characteristics and test severities
2.1 Preferred characteristics
2.1.1 General

The values given in the detail specification shall preferably be selected from the following:

2.1.2 Preferred climatic categories
The potentiometers covered by this specification are classif
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.