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

prescribes terms and methods of test for polymeric positive temperature coefficient thermistors, insulated and non-insulated types, typically intended for use in current limiting and overcurrent protection applications. It establishes standard terms, inspection procedures and methods of test for use in detail specifications for Qualification Approval and for Quality Assessment Systems for electronic components.

Elektrische Doppelschichtfestkondensatoren zur Verwendung in Geräten der Elektronik - Teil 1: Fachgrundnorm

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.

Fiksni električni dvoplastni kondenzatorji za elektronsko opremo – 1. del: Rodovna specifikacija (IEC 62391-1:2006)

General Information

Status
Withdrawn
Publication Date
07-Jun-2006
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
6060 - Document made available
Start Date
08-Jun-2006
Completion Date
08-Jun-2006

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SLOVENSKI SIST EN 62391-1:2006
STANDARD
oct 2006
Fiksni električni dvoplastni kondenzatorji za elektronsko opremo – 1. del:
Rodovna specifikacija (IEC 62391-1:2006)
Fixed electric double-layer capacitors for use in electronic equipment – Part 1:
Generic specification (IEC 62391-1:2006)
ICS 31.060.10 Referenčna številka
SIST EN 62391-1:2006(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 62391-1
NORME EUROPÉENNE
June 2006
EUROPÄISCHE NORM
ICS 31.060.10
English version
Fixed electric double-layer capacitors
for use in electronic equipment
Part 1: Generic specification
(IEC 62391-1:2006)
Condensateurs électriques fixes Elektrische
à double couche utilisés dans Doppelschichtfestkondensatoren zur
les équipements électroniques Verwendung in Geräten der Elektronik
Partie 1: Spécification générique Teil 1: Fachgrundnorm
(CEI 62391-1:2006) (IEC 62391-1:2006)

This European Standard was approved by CENELEC on 2006-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62391-1:2006 E
---------------------- Page: 2 ----------------------
EN 62391-1:2006 - 2 -
Foreword

The text of document 40/1640/FDIS, future edition 1 of IEC 62391-1, prepared by IEC TC 40, Capacitors

and resistors for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was

approved by CENELEC as EN 62391-1 on 2006-05-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2007-02-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-05-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 62391-1:2006 was approved by CENELEC as a European

Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 62391-1:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60027 Series Letter symbols to be used in electrical HD 60027 Series
technology
IEC 60050 Series International Electrotechnical Vocabulary - -
(IEV)
1) 2)
IEC 60062 (mod) - Marking codes for resistors and capacitors EN 60062 2005
IEC 60063 - Preferred number series for resistors and - -
capacitors
IEC 60068-1 1988 Environmental testing -
+ corr. October 1988 Part 1: General and guidance
+ A1 1992
EN 60068-1 1994
IEC 60068-2-1 1990 Environmental testing - EN 60068-2-1 1993
+ A1 1993 Part 2: Tests - Tests A: Cold + A1 1993
+ A2 1994 + A2 1994
IEC 60068-2-2 1974 Basic environmental testing procedures - EN 60068-2-2 1993
+ A1 1993 Part 2: Tests - Tests B: Dry heat + A1 1993
+ A2 1994 + A2 1994
IEC 60068-2-6 1995 Environmental testing -

+ corr. March 1995 Part 2: Tests - Test Fc: Vibration (sinusoidal) EN 60068-2-6 1995

IEC 60068-2-14 1984 Environmental testing -
+ A1 1986 Part 2: Tests - Test N: Change of temperature EN 60068-2-14 1999
IEC 60068-2-20 1979 Basic environmental testing procedures -
+ A2 1987 Part 2: Tests - Test T: Soldering HD 323.2.20 S3 1988
IEC 60068-2-21 1999 Environmental testing - EN 60068-2-21 1999
Part 2-21: Tests - Test U: Robustness of
terminations and integral mounting devices
IEC 60068-2-45 1980 Basic environmental testing procedures - EN 60068-2-45 1992
+ A1 1993 Part 2: Tests - Test Xa and guidance: + A1 1993
Immersion in cleaning solvents
Undated reference.
Valid edition at date of issue.
EN 60068-2-2 includes supplement A to IEC 60068-2-2.
---------------------- Page: 4 ----------------------
EN 62391-1:2006 - 4 -
Publication Year Title EN/HD Year
IEC 60068-2-47 1999 Environmental testing - EN 60068-2-47 1999
Part 2-47: Test methods - Mounting of + corr. June 2000
components, equipment and other articles for
vibration, impact and similar dynamic tests
IEC 60068-2-58 2004 Environmental testing - EN 60068-2-58 2004
Part 2-58: Tests - Test Td: Test methods for + corr. December 2004
solderability, resistance to dissolution of
metallization and to soldering heat of surface
mounting devices (SMD)
IEC 60068-2-78 2001 Environmental testing - EN 60068-2-78 2001
Part 2-78: Tests - Test Cab: Damp heat,
steady state
IEC 60294 1969 Measurement of the dimensions of a - -
cylindrical component having two axial
terminations
IEC 60617 data- Graphical symbols for diagrams - - -
base
IEC 60695-11-5 2004 Fire hazard testing - EN 60695-11-5 2005
Part 11-5: Test flames - Needle-flame test
method - Apparatus, confirmatory test
arrangement and guidance
IEC 60717 1981 Method for the determination of the space - -
required by capacitors and resistors with
unidirectional terminations
IEC 61760-1 1998 Surface mounting technology - EN 61760-1 1998
Part 1: Standard method for the specification
of surface mounting components (SMDs)
IEC QC 001002-3 - IEC Quality Assessment System for - -
Electronic Components (IECQ) - Rules of
Procedure -
Part 3: Approval procedures
ISO 1000 1992 SI units and recommendations for the use of - -
their multiples and of certain other units

EN 60068-2-47 is superseded by EN 60068-2-47:2005, which is based on IEC 60068-2-47:2005.

---------------------- Page: 5 ----------------------
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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale V
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 6 ----------------------
– 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

---------------------- Page: 7 ----------------------
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

---------------------- Page: 8 ----------------------
– 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.

---------------------- Page: 9 ----------------------
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.
---------------------- Page: 10 ----------------------
– 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 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.
1.2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.
IEC 60027 (all parts), Letter symbols to be used in electrical technology
IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV)
IEC 60062, Marking codes for resistors and capacitors
IEC 60063, Preferred number series for resistors and capacitors
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60068-2-1:1990, Environmental testing – Part 2: Tests – Tests A: Cold
Amendment 1 (1993)
Amendment 2 (1994)
IEC 60068-2-2:1974, Environmental testing – Part 2: Tests – Tests B: Dry Heat
Amendment 1 (1993)
Amendment 2 (1994)

IEC 60068-2-6:1995, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)

IEC 60068-2-14:1984, Environmental testing – Part 2: Tests – Test N: Change of temperature

Amendment 1 (1986)
IEC 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering
Amendment 2 (1987)

IEC 60068-2-21:1999, Environmental testing – Part 2-21: Tests – Test U: Robustness of

terminations and integral mounting devices
---------------------- Page: 11 ----------------------
62391-1  IEC:2006(E) – 7 –

IEC 60068-2-45:1980, Environmental testing – Part 2: Tests – Test XA and guidance:

Immersion in cleaning solvents
Amendment 1 (1993)

IEC 60068-2-47:1999, Environmental testing – Part 2-47: Test methods – Mounting of

components, equipment and other articles for vibration, impact and similar dynamic tests

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 60068-2-78:2001, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat,

steady state.

IEC 60294:1969, Measurement of the dimensions of a cylindrical component having two axial

terminations
IEC 60617 (all parts) [DB] , Graphical symbols for diagrams

IEC 60695-11-5: Fire hazard testing – Part 11-5: Test flames – Needle-flame test method:

Apparatus, confirmatory test arrangement and guidance

IEC 60717:1981, Method for the determination of the space required by capacitors and

resistors with unidirectional terminations
IEC 61760-1:1998, Surface mounting technology – Part 1: Standard method for the
specification of surface mounting components (SMDs)
QC001002-3, Rules of procedure – Part 3: Approval procedures

ISO 1000:1992, SI units and recommendations for the use of their multiples and of certain

other units
2 Technical data
2.1 Unit and symbols

Units, graphical symbols, letter symbols and terminology shall, whenever possible, be taken

from the following publications:
– IEC 60027
– IEC 60050
– IEC 60617
– ISO 1000

When further items are required they should be derived in accordance with the principles of

the publications listed above.
___________
“DB” refers to the IEC on-line database.
To be published.
---------------------- Page: 12 ----------------------
– 8 – 62391-1  IEC:2006(E)
2.2 Terms and definitions
For the purpose of this document, the following definitions apply:
2.2.1
type

group of components having similar design features and the similarity of whose manufacturing

techniques enables them to be grouped together either for qualification approval or for quality

conformance inspection; they are generally covered by a single detail specification

NOTE Components described in several detail specifications, may, in some cases, be considered as belonging to

the same type.
2.2.2
style

subdivision of a type, generally based on dimensional factors; a style may include several

variants, generally of a mechanical order
2.2.3
grade

term to indicate an additional general characteristic concerning the intended application of the

component which may only be used in combination with one or more words (e.g. long life

grade) and not by a single letter or number
2.2.4
family (of electronic components)

group of components which predominantly displays a particular physical attribute and/or fulfils

a defined function
2.2.5
subfamily (of electronic components)

group of components within a family manufactured by similar technological methods

2.2.6
d.c. capacitor
capacitor designed essentially for application with direct voltage
NOTE A d.c. capacitor may not be suitable for use on a.c. supplies.
2.2.7
rated capacitance
designated capacitance value usually indicated on the capacitor
2.2.8
category temperature range

range of ambient temperatures for which the capacitor has been designed to operate

continuously; this is given by the lower and upper category temperature
2.2.9
lower category temperature
minimum ambient temperature for which a capacitor has been designed to operate
continuously
2.2.10
upper category temperature
maximum ambient temperature for which a capacitor has been designed to operate
continuously
---------------------- Page: 13 ----------------------
62391-1  IEC:2006(E) – 9 –
2.2.11
rated temperature

maximum ambient temperature at which the rated voltage may be continuously applied

2.2.12
rated voltage (d.c.)

maximum direct voltage or peak value of pulse voltage which may be applied continuously to

a capacitor at any temperature between the lower category temperature and the rated

temperature
2.2.13
category voltage

maximum voltage which may be applied continuously to a capacitor at its upper category

temperature
2.2.14
temperature derated voltage

maximum voltage that may be applied continuously to a capacitor when it is at any

temperature between the rated temperature and the upper category temperature

NOTE Information on the voltage/temperature dependence at temperatures between the rated temperature and

the upper category temperature should, if applicable, be given in the relevant specification.

2.2.15
surge voltage ratio

quotient of the maximum instantaneous voltage which may be applied to the terminations of

the capacitor for a specified time at any temperature within the category temperature range

and the rated voltage or the temperature derated voltage, as appropriate

NOTE The number of times per hour that this voltage may be applied should be specified.

2.2.16
rated ripple voltage

r.m.s. value of the maximum allowable alternating voltage at a specified frequency

superimposed on the d.c. voltage at which the capacitor may be operated continuously at a

specified temperature

NOTE The sum of the direct voltage and the peak value of the alternating voltage applied to the capacitor should

not exceed the rated voltage or temperature derated voltage as applicable.
2.2.17
reverse voltage (for polar capacitors only)
voltage applied to the capacitor terminations in the reverse polarity direction
2.2.18
rated ripple current

r.m.s. value of the maximum allowable alternating current of a specified frequency, at which

the capacitor may be operated continuously at a specified temperature
2.2.19
time constant

product of the internal resistance (including circuit resistance) and the capacitance, normally

expressed in seconds
2.2.20
internal resistance

expresses the resistance component in an equivalent series circuit of capacitance and

resistance of a capacitor, given in ohms (Ω)
---------------------- Page: 14 ----------------------
– 10 – 62391-1  IEC:2006(E)
2.2.21
IR drop

voltage drop between the capacitor terminals that is generated at the start of discharge and

quantified by the product of the discharge current and the internal resistance of the capacitor

2.2.22
maximum temperature of a capacitor
temperature at the hottest point of its external surface
NOTE The terminations are considered to be part of the external surface.
2.2.23
minimum temperature of a capacitor
temperature at the coldest point of the external surface
NOTE The terminations are considered to be part of the external surface.
2.2.24
minimum storage temperature

minimum ambient temperature which the capacitor should withstand in the non-operating

condition without damage
2.2.25
maximum storage temperature

maximum ambient temperature which is equal to the upper category temperature of the

capacitor
2.2.26
temperature characteristic of capacitance

maximum reversible variation of capacitance produced over a given temperature range within

the category temperature range, normally expressed as a percentage of the capacitance

related to a reference temperature of 20 °C

NOTE The term characterizing this property applies mainly to capacitors of which the variations of capacitance as

a function of temperature, linear or non-linear, cannot be expressed with precision and certainty.

2.2.27
visible damage

visible damage which reduces the usability of the capacitor for its intended purpose

2.2.28
leakage current

value of the current that flows through a capacitor after a charge for a fixed period of time,

given in amperes (A)
2.2.29
self discharge

voltage held while being left for a fixed period of time under no load after a charge for a fixed

period of time
2.2.
...

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