IEC 62391-1:2006

Fixed electric double-layer capacitors for use in electronic equipment - Part 1: Generic specification

IEC 62391-1:2006 applies to fixed electric double layer capacitors (hereafter called "capacitor(s)") mainly used in DC circuits of electronic equipment. It establishes standard terms, inspection procedures and methods of test for use in sectional and detail specifications of electronic components for quality assessment or any other purpose.

Condensateurs électriques fixes à double couche utilisés dans les équipements électroniques - Partie 1: Spécification générique

La CEI 62391-1:2006 s'applique aux condensateurs électriques fixes à double couche (que l'on appellera ci-après "condensateurs") principalement utilisés dans des circuits à courant continu d'équipements électroniques. Elle définit les termes normalisés, les procédures d'inspection et les méthodes d'essai utilisés dans les spécifications intermédiaires et particulières des composants électroniques dans le cadre de l'assurance de qualité, ainsi qu'à d'autres fins.

General Information

• Status: Published
• Publication Date: 09-Apr-2006
• ICS: 31.060.10 - Fixed capacitors
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Drafting Committee: MT 62391-1 - TC 40/MT 62391-1
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 23-Oct-2015

Relations

• Revised: IEC 62391-1:2015 - Fixed electric double-layer capacitors for use in electric and electronic equipment - Part 1: Generic specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 62391-1
First edition
2006-04
Fixed electric double-layer capacitors
for use in electronic equipment –
Part 1:
Generic specification
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: [e-mail]
Tel: [phone]
Fax: [phone]
INTERNATIONAL IEC
STANDARD 62391-1
First edition
2006-04
Fixed electric double-layer capacitors
for use in electronic equipment –
Part 1:
Generic specification
 IEC 2006  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale V
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62391-1  IEC:2006(E)
CONTENTS
FOREWORD.4

1 General .6
1.1 Scope.6
1.2 Normative references .6
2 Technical data.7
2.1 Unit and symbols.7
2.2 Terms and definitions .8
2.3 Preferred values.11
2.4 Marking .11
3 Quality assessment procedures.12
3.1 General .12
3.2 Primary stage of manufacture.12
3.3 Structurally similar components.12
3.4 Declaration of conformity.12
3.5 Test schedule and requirement for initial assessment.12
4 Tests and measurement procedures.12
4.1 General .12
4.2 Standard atmospheric conditions.12
4.3 Drying .13
4.4 Visual examination and check of dimensions.14
4.5 Capacitance .14
4.6 Internal resistance.17
4.7 Leakage current .19
4.8 Self-discharge .19
4.9 Robustness of terminations .20
4.10 Resistance to soldering heat .21
4.11 Solderability .22
4.12 Rapid change of temperature .23
4.13 Vibration.23
4.14 Damp heat, steady state.23
4.15 Endurance.23
4.16 Storage .24
4.17 Characteristics at high and low temperature .25
4.18 Component solvent resistance.25
4.19 Solvent resistance of marking.26
4.20 Passive flammability.26
4.21 Pressure relief (if applicable).27

Annex A (normative) Classification according to capacitance and internal resistance.28
Annex B (informative) Measuring method of capacitance and low resistance by low
frequency a.c. method (reference) .30

62391-1  IEC:2006(E) – 3 –
Figure 1 − Circuit for constant current discharge method .14
Figure 2 – Voltage characteristic between capacitor terminals .15
Figure 3 − Circuit for constant resistance charging method .16
Figure 4 − Circuit for a.c. resistance method.17
Figure 5 − Voltage characteristic between capacitor terminals .18
Figure 6 − Self-discharge test diagram .19
Figure A.1 − Conceptual rendering orientated by characteristics in each classification.29
Figure B.1 − Capacitance measuring system by low frequency a.c. method .30

Table 1 – Reference test: standard atmospheric conditions .13
Table 2 – Discharge conditions .15
Table 3 − Discharge current.18
Table 4 – Tensile force .20
Table 5 – Torque .21
Table 6 – Severities and requirements .27
Table A.1 − Measurement items for electric performance.29

– 4 – 62391-1  IEC:2006(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED ELECTRIC DOUBLE-LAYER CAPACITORS
FOR USE IN ELECTRONIC EQUIPMENT

Part 1: Generic specification
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62391-1 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1640/FDIS 40/1712/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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

62391-1  IEC:2006(E) – 5 –
IEC 62391 consists of the following parts, under the general title Fixed electric double layer
capacitors for use in electronic equipment
Part 1: Generic specification
Part 2: Sectional specification – Electric double-layer capacitors for power application
The sectional specification mentioned above does have a blank detail specification being a
supplementary document, containing requirements for style, layout and minimum content of
detail specifications.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
A bilingual version of this standard may be issued at a later date.

– 6 – 62391-1  IEC:2006(E)
FIXED ELECTRIC DOUBLE-LAYER CAPACITORS
FOR USE IN ELECTRONIC EQUIPMENT

Part 1: Generic specification
1 General
1.1 Scope
This part of IEC 62391 applies to fixed electric double layer capacitors (hereafter called
“capacitor(s)”) mainly used in DC circui
...

IEC 62391-1 ®
Edition 1.0 2006-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed electric double-layer capacitors for use in electronic equipment –
Part 1: Generic specification
Condensateurs électriques fixes à double couche utilisés dans les équipements
électroniques –
Partie 1: Spécification générique

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 la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
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.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) 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 CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 62391-1 ®
Edition 1.0 2006-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed electric double-layer capacitors for use in electronic equipment –

Part 1: Generic specification
Condensateurs électriques fixes à double couche utilisés dans les équipements

électroniques –
Partie 1: Spécification générique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 31.060.10 ISBN 978-2-83220-140-4

– 2 – 62391-1  IEC:2006
CONTENTS
FOREWORD . 4

1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Technical data . 7
2.1 Unit and symbols . 7
2.2 Terms and definitions . 8
2.3 Preferred values . 11
2.4 Marking . 11
3 Quality assessment procedures . 12
3.1 General . 12
3.2 Primary stage of manufacture . 12
3.3 Structurally similar components . 12
3.4 Declaration of conformity . 12
3.5 Test schedule and requirement for initial assessment . 12
4 Tests and measurement procedures . 12
4.1 General . 12
4.2 Standard atmospheric conditions . 12
4.3 Drying . 13
4.4 Visual examination and check of dimensions . 14
4.5 Capacitance . 14
4.6 Internal resistance . 17
4.7 Leakage current . 19
4.8 Self-discharge . 20
4.9 Robustness of terminations . 20
4.10 Resistance to soldering heat . 21
4.11 Solderability . 22
4.12 Rapid change of temperature . 23
4.13 Vibration. 24
4.14 Damp heat, steady state . 24
4.15 Endurance . 24
4.16 Storage . 25
4.17 Characteristics at high and low temperature . 25
4.18 Component solvent resistance . 26
4.19 Solvent resistance of marking . 27
4.20 Passive flammability . 27
4.21 Pressure relief (if applicable) . 28

Annex A (normative) Classification according to capacitance and internal resistance . 29
Annex B (informative) Measuring method of capacitance and low resistance by low
frequency a.c. method (reference) . 31

62391-1  IEC:2006 – 3 –
Figure 1 − Circuit for constant current discharge method . 14
Figure 2 – Voltage characteristic between capacitor terminals . 15
Figure 3 − Circuit for constant resistance charging method . 16
Figure 4 − Circuit for a.c. resistance method . 17
Figure 5 − Voltage characteristic between capacitor terminals . 19
Figure 6 − Self-discharge test diagram . 20
Figure A.1 − Conceptual rendering orientated by characteristics in each classification . 30
Figure B.1 − Capacitance measuring system by low frequency a.c. method . 31

Table 1 – Reference test: standard atmospheric conditions . 13
Table 2 – Discharge conditions . 15
Table 3 − Discharge current . 18
Table 4 – Tensile force . 21
Table 5 – Torque . 21
Table 6 – Severities and requirements . 28
Table A.1 − Measurement items for electric performance . 30

– 4 – 62391-1  IEC:2006
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED ELECTRIC DOUBLE-LAYER CAPACITORS
FOR USE IN ELECTRONIC EQUIPMENT –

Part 1: Generic specification
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publica
...