SIST EN 60393-6:2016

SLOVENSKI STANDARD
SIST EN 60393-6:2016
01-julij-2016
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Potentiometers for use in electronic equipment - Part 6: Sectional specification - Surface
mount preset potentiometers
Potentiomètres utilises dans les équipements électroniques - Partie 6 : Spécification
intermédiaire - Potentiomètres d'ajustement pour montage en surface
Ta slovenski standard je istoveten z: EN 60393-6:2016
ICS:
31.040.20 Potenciometri, spremenljivi Potentiometers, variable
upori resistors
SIST EN 60393-6:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60393-6:2016

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SIST EN 60393-6:2016


EUROPEAN STANDARD EN 60393-6

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2016
ICS 31.040.20

English Version
Potentiometers for use in electronic equipment - Part 6:
Sectional specification - Surface mount preset potentiometers
(IEC 60393-6:2015)
Potentiomètres utilises dans les équipements électroniques Potentiometer zur Verwendung in Geräten der Elektronik -
- Partie 6 : Spécification intermédiaire - Potentiomètres Teil 6: Rahmenspezifikation - Trimmpotentiometer für die
d'ajustement pour montage en surface Oberflächenmontage
(IEC 60393-6:2015) (IEC 60393-6:2015)
This European Standard was approved by CENELEC on 2016-01-18. 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-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 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 electrotechnical 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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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 60393-6:2016 E

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SIST EN 60393-6:2016
EN 60393-6:2016
European foreword
The text of document 40/2409/FDIS, future edition 2 of IEC 60393-6, prepared by IEC/TC 40
"Capacitors and resistors for electronic equipment" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 60393-6:2016.
The following dates are fixed:
(dop) 2016-10-18
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-01-18
• latest date by which the national standards conflicting with
the document have to be withdrawn

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 not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60393-6:2015 was approved by CENELEC as a European
Standard without any modification.
2

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SIST EN 60393-6:2016
EN 60393-6:2016

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, 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 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 EN 60068-1 2014
and guidance
IEC 60068-2-1 2007 Environmental testing -- Part 2-1: Tests - EN 60068-2-1 2007
Test A: Cold
IEC 60068-2-2 2007 Environmental testing -- Part 2-2: Tests - EN 60068-2-2 2007
Test B: Dry heat
IEC 60068-2-58 2004 Environmental testing -- Part 2-58: Tests - EN 60068-2-58 2004
Test Td: Test methods for solderability,
resistance to dissolution of metallization
and to soldering heat of surface mounting
devices (SMD)
- -  + corrigendum Dec. 2004
IEC 60286-3 -  Packaging of components for automatic EN 60286-3 -
handling -- Part 3: Packaging of surface
mount components on continuous tapes
IEC 60393-1 2008 Potentiometers for use in electronic EN 60393-1 2009
equipment -- Part 1: Generic specification
IEC 61193-2 2007 Quality assessment systems -- Part 2: EN 61193-2 2007
Selection and use of sampling plans for
inspection of electronic components and
packages

3

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SIST EN 60393-6:2016

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SIST EN 60393-6:2016



IEC 60393-6

®


Edition 2.0 2015-12




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Potentiometers for use in electronic equipment –

Part 6: Sectional specification – Surface mount preset potentiometers




Potentiomètres utilisés dans les équipements électroniques –

Partie 6: Spécification intermédiaire – Potentiomètres d'ajustement pour

montage en surface
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 31.040.20 ISBN 978-2-8322-3058-9



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

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SIST EN 60393-6:2016
– 2 – IEC 60393-6:2015  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 . 7
1.3.5 Resistance law . 7
1.3.6 Ratings and characteristics . 8
1.3.7 Marking . 8
1.3.8 Ordering information . 8
1.3.9 Additional information (not for inspection purposes) . 8
1.3.10 Packaging. 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 . 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 . 11
2.2.4 Rated dissipation (in the mounted state) . 12
2.2.5 Limiting element voltage . 13
2.2.6 Insulation voltage (for insulated styles) . 13
2.2.7 Limits for insulation resistance (for insulated styles) . 13
2.3 Preferred test severities . 13
2.3.1 General . 13
2.3.2 Drying . 13
2.3.3 Vibration . 13
2.3.4 Shock . 14
2.3.5 Low air pressure . 14
2.3.6 Change of temperature . 14
2.3.7 Mounting . 14
2.3.8 Solderability. 14
2.3.9 Resistance to soldering heat . 15
2.3.10 Component solvent resistance . 15

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SIST EN 60393-6:2016
IEC 60393-6:2015  IEC 2015 – 3 –
2.3.11 Solvent resistance of the marking . 15
3 Quality assessment procedures . 15
3.1 General . 15
3.2 Definitions. 15
3.2.1 Primary stage of manufacture . 15
3.2.2 Structurally similar components . 15
3.2.3 Assessment level EZ (zero nonconforming) . 15
3.3 Qualification approval . 16
3.3.1 General . 16
3.3.2 Qualification approval on the basis of the fixed sample size procedure . 16
3.3.3 Tests . 16
3.4 Quality conformance inspection . 24
3.4.1 Formation of inspection lots . 24
3.4.2 Test schedule . 24
3.4.3 Assessment levels . 24
3.5 Delayed delivery . 27
Bibliography . 28

Figure 1 – Rated dissipation curve . 12
Figure 2 – Rated dissipation curve with smaller area of operation . 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) . 18
Table 4 – Quality conformance inspection: Lot-by-lot . 25
Table 5 – Quality conformance inspection: Periodic testing . 26

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SIST EN 60393-6:2016
– 4 – IEC 60393-6:2015  IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT –

Part 6: Sectional specification –
Surface mount preset 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 60393-6 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This second edition cancels and replaces the first edition published in 2003 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 (zero nonconforming);
b) complete editorial revision.

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SIST EN 60393-6:2016
IEC 60393-6:2015  IEC 2015 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
40/2409/FDIS 40/2424/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.

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SIST EN 60393-6:2016
– 6 – IEC 60393-6:2015  IEC 2015
POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT –

Part 6: Sectional specification –
Surface mount preset potentiometers



1 General
1.1 Scope
This part of IEC 60393 applies to surface mount preset potentiometers for use in electronic
equipment.
This part of IEC 60393 prescribes preferred ratings and characteristics and selects from
IEC 60393-1, the appropriate quality assessment procedures, tests and measuring methods,
and it gives general performance requirements for this type of potentiometers.
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 code 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 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 60286-3, Packaging of components for automatic handling – Part 3: Packaging of
surface mount components on continuous tapes
IEC 60393-1:2008, Potentiometers for use in electronic equipment – Part 1: Generic
specification
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

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SIST EN 60393-6:2016
IEC 60393-6:2015  IEC 2015 – 7 –
listed in a subclause of the detail specification and indicated in the test schedules, for
example by an asterisk.
The information given in 1.3.2 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 surface mount preset
potentiometer as aid to easy recognition and for comparison of the surface mount
potentiometer with others.
Dimensions and their associated tolerances, which affect interchangeability and mounting,
shall be given in the detail specification. All dimensions shall be stated in millimetres.
Normally the numerical values shall be given for the length, width and thickness of the body.
Where space is insufficient to show the detail dimensions required for inspection purposes,
such dimensions shall appear on the drawing forming an annex to the detail specification.
Recommended land patterns shall be given in the detail specification.
When the outline drawing is other than described above, the detail specification shall state
such dimensional information as will adequately describe the surface mount potentiometer.
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 bump or
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 and they shall be used for voltage proof and the insulation
resistance tests and for application of the vibration and shock tests. For the latter tests the
mounting shall be such that there shall be no parasitic vibration.
Mounting for test and measurement purpose (when required) shall be in accordance with

IEC 60393-1:2008, 4.47.
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
The resistance law is generally not verified. If required, the detail specification shall prescribe
the measuring points and the associated limits for the output ratio and shall specify the
position of the corresponding tests in the test schedules.

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SIST EN 60393-6:2016
– 8 – IEC 60393-6:2015  IEC 2015
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
example on the website http://www.iecq.org/.
The qualified products list “QPL” style is given in the register of approvals, available, for
example, on the website as stated above.
1.3.6.3 Particular characteristics
Additional characteristics may be listed, when they are considered necessary to specify
adequately the component for design and application purposes.
1.3.6.4 Soldering
The detail specification shall prescribe the test methods, severity and requirements applicable
for the solderability and the resistance to soldering heat tests.
1.3.7 Marking
The detail specification shall specify the content of the marking on the surface mount preset
potentiometer and on the package. Deviation from 1.4 shall be specifically stated.
Surface mount preset potentiometers are generally not marked on the body. If some marking
can be applied, the surface mount preset potentiometer shall be clearly marked with the
nominal total resistance and many of the remaining items in IEC 60393-1:2008, 2.4.
All items shall be marked on the package.
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 resistanc;
b) number and issue reference of the detail specification and style reference.
1.3.9 Additional information (not for inspection purposes)
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 on the detail specification.
1.3.10 Packaging
If taping is applied, taping shall be in accordance with IEC 60286-3.

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SIST EN 60393-6:2016
IEC 60393-6:2015  IEC 2015 – 9 –
1.4 Marking
1.4.1 General
When coding is used for nominal total 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 position in the list:
a) nominal total resistance;
b) tolerance on nominal total resistance;
c) detail specification and style reference;
d) year and month (or week) of manufacture;
e) manufacturer's name and/or trademark;
f) manufacture’s type designation.
1.4.2 Marking for potentiometers
The potentiometer shall be clearly marked 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.
1.4.3 Marking for packaging
The package containing the potentiometer(s) shall be clearly marked with all the information
listed in 1.4.1 and below.
a) quantity
b) country origin
1.4.4 Additional marking
Any additional marking shall be applied in such a way 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 surface mount preset potentiometers covered by this standard are classified into climatic
categories according to the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperature and the duration of the damp heat, steady state
test shall be chosen from the following:
Lower category temperature: –65 °C, –55 °C, –40 °C, –25 °C and –10 °C
Upper category temperature: +70 °C, +85 °C, +100 °C, +125 °C and +155 °C
Duration of the damp heat, steady state test:
...