SIST EN IEC 62391-1:2023
(Main)Fixed electric double-layer capacitors for use in electric and electronic equipment - Part 1: Generic specification (IEC 62391-1:2022)
Fixed electric double-layer capacitors for use in electric and electronic equipment - Part 1: Generic specification (IEC 62391-1:2022)
This part of IEC 62391 applies to fixed electric double-layer capacitors (hereafter referred to as
capacitors) mainly used in DC circuits of electric and electronic equipment.
This part of IEC 62391 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.
Elektrische Doppelschichtkondensatoren zur Verwendung in elektrischen und elektronischen Geräten - Teil 1: Fachgrundspezifikation (IEC 62391-1:2022)
Condensateurs électriques fixes à double couche utilisé dans les équipements électriques et électroniques - Partie 1: Spécification générique (IEC 62391-1:2022)
L’IEC 62391-1:2022 s’applique aux condensateurs électriques fixes à double couche (appelés ci-après condensateurs) principalement utilisés dans des circuits à courant continu d’équipements électriques et électroniques.
La présente partie de l’IEC 62391 définit les termes normalisés, les procédures de contrôle et les méthodes d’essai utilisés dans les spécifications intermédiaires et particulières des composants électroniques dans le cadre de l’assurance de la qualité, ainsi qu’à d’autres fins.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- Le présent document a été intégralement restructuré pour satisfaire aux Directives ISO/IEC, Partie 2. De nouvelles catégories techniques des méthodes d’essai ont été introduites, les méthodes d’essai ayant été réorganisées en fonction de ces nouvelles catégories. Les tableaux, figures et références ont été révisés en conséquence.
- Les formules de calcul de l’efficacité de charge/décharge de l’Annexe D ont été divisées en deux: "Calcul prenant pour hypothèse la pleine charge et la pleine décharge" et "Calcul prenant pour hypothèse une charge et une décharge incomplètes, dues à la résistance interne".
Nespremenljivi električni dvoplastni kondenzatorji za električno in elektronsko opremo - 1. del: Rodovna specifikacija (IEC 62391-1:2022)
Ta del standarda IEC 62391 se uporablja za nespremenljive električne dvoplastne kondenzatorje (v nadaljnjem besedilu kondenzatorje), ki se uporabljajo za električno in elektronsko opremo v omrežjih z enosmerno napetostjo.
Ta del standarda IEC 62391 določa splošne pogoje, inšpekcijske postopke in preskusne metode za uporabo v sekcijskih in podrobnih specifikacijah elektronskih komponent za oceno kakovosti ali kateri koli drug namen.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 62391-1:2023
01-januar-2023
Nadomešča:
SIST EN 62391-1:2016
SIST EN 62391-1:2016/AC:2017
SIST EN 62391-1:2016/AC:2019
Nespremenljivi električni dvoplastni kondenzatorji za električno in elektronsko
opremo - 1. del: Rodovna specifikacija (IEC 62391-1:2022)
Fixed electric double-layer capacitors for use in electric and electronic equipment - Part
1: Generic specification (IEC 62391-1:2022)
Elektrische Doppelschichtkondensatoren zur Verwendung in elektrischen und
elektronischen Geräten - Teil 1: Fachgrundspezifikation (IEC 62391-1:2022)
Condensateurs électriques fixes à double couche utilisé dans les équipements
électriques et électroniques - Partie 1: Spécification générique (IEC 62391-1:2022)
Ta slovenski standard je istoveten z: EN IEC 62391-1:2022
ICS:
31.060.10 Fiksni kondenzatorji Fixed capacitors
SIST EN IEC 62391-1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 62391-1:2023
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SIST EN IEC 62391-1:2023
EUROPEAN STANDARD EN IEC 62391-1
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2022
ICS 31.060.10 Supersedes EN 62391-1:2016;
EN 62391-1:2016/AC:2016-12;
EN 62391-1:2016/AC:2019-08
English Version
Fixed electric double-layer capacitors for use in electric and
electronic equipment - Part 1: Generic specification
(IEC 62391-1:2022)
Condensateurs électriques fixes à double couche utilisés Elektrische Doppelschichtkondensatoren zur Verwendung
dans les équipements électriques et électroniques - Partie in elektrischen und elektronischen Geräten - Teil 1:
1: Spécification générique Fachgrundspezifikation
(IEC 62391-1:2022) (IEC 62391-1:2022)
This European Standard was approved by CENELEC on 2022-11-24. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62391-1:2022 E
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SIST EN IEC 62391-1:2023
EN IEC 62391-1:2022 (E)
European foreword
The text of document 40/2966/FDIS, future edition 3 of IEC 62391-1, 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 IEC 62391-1:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-08-24
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-11-24
document have to be withdrawn
This document supersedes EN 62391-1:2016 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62391-1:2022 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60027 (series) NOTE Harmonized as EN 60027 (series)
IEC 60068-2-47:2005 NOTE Harmonized as EN 60068-2-47:2005 (not modified)
IEC 60301:2012 NOTE Harmonized as EN 60301:2012 (not modified)
IEC 60384-1:2021 NOTE Harmonized as EN IEC 60384-1:2021 (not modified)
IEC 60695-2-11 NOTE Harmonized as EN IEC 60695-2-11
IEC 61881-3:2012 NOTE Harmonized as EN 61881-3:2012 (not modified)
IEC 62391-1:2015 NOTE Harmonized as EN 62391-1:2016 (not modified)
IEC 62391-2:2006 NOTE Harmonized as EN 62391-2:2006 (not modified)
IEC 62391-2-1:2006 NOTE Harmonized as EN 62391-2-1:2006 (not modified)
IEC 62576:2018 NOTE Harmonized as EN IEC 62576:2018 (not modified)
ISO 80000-1:2009 NOTE Harmonized as EN ISO 80000-1:2013 (not modified)
2
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SIST EN IEC 62391-1:2023
EN IEC 62391-1:2022 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 60063 - Preferred number series for resistors and EN 60063 -
capacitors
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 60068-2-6 - Environmental testing - Part 2-6: Tests - EN 60068-2-6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2-14 - Environmental testing - Part 2-14: Tests - EN 60068-2-14 -
Test N: Change of temperature
IEC 60068-2-20 - Environmental testing - Part 2-20: Tests - EN IEC 60068-2-20 -
Test Ta and Tb: Test methods for
solderability and resistance to soldering
heat of devices with leads
IEC 60068-2-21 - Environmental testing - Part 2-21: Tests - EN IEC 60068-2-21 -
Test U: Robustness of terminations and
integral mounting devices
IEC 60068-2-45 1980 Basic environmental testing procedures - EN 60068-2-45 1992
Part 2-45: Tests - Test XA and guidance:
Immersion in cleaning solvents
+ A1 1993 + A1 1993
IEC 60068-2-58 - Environmental testing - Part 2-58: Tests - EN 60068-2-58 -
Test Td: Test methods for solderability,
resistance to dissolution of metallization
and to soldering heat of surface mounting
devices (SMD)
3
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SIST EN IEC 62391-1:2023
EN IEC 62391-1:2022 (E)
IEC 60068-2-69 - Environmental testing - Part 2-69: Tests - EN 60068-2-69 -
Test Te/ Tc: Solderability testing of
electronic components and printed boards
by the wetting balance (force
measurement) method
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60294 - Measurement of the dimensions of a EN 60294 -
cylindrical component with axial
terminations
IEC 60695-11-5 - Fire hazard testing - Part 11-5: Test flames EN 60695-11-5 -
- Needle-flame test method - Apparatus,
confirmatory test arrangement and
guidance
IEC 60717 - Method for the determination of the space EN 60717 -
required by capacitors and resistors with
unidirectional terminations
IEC 61193-2 - Quality assessment systems - Part 2: EN 61193-2 -
Selection and use of sampling plans for
inspection of electronic components and
packages
4
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SIST EN IEC 62391-1:2023
IEC 62391-1
®
Edition 3.0 2022-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fixed electric double-layer capacitors for use in electric and electronic
equipment –
Part 1: Generic specification
Condensateurs électriques fixes à double couche utilisés dans les équipements
électriques et électroniques –
Partie 1: Spécification générique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.10 ISBN 978-2-8322-5729-6
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: 7 ----------------------
SIST EN IEC 62391-1:2023
– 2 – IEC 62391-1:2022 © IEC 2022
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 General requirements . 15
4.1 Unit and symbols . 15
4.2 Preferred values and class . 15
4.2.1 General . 15
4.2.2 Preferred values of nominal capacitance . 15
4.2.3 Class . 15
4.3 Marking . 15
4.3.1 General . 15
4.3.2 Coding . 15
5 General provisions for tests and measurement procedures . 16
5.1 General . 16
5.2 Test and measurement requirements . 16
5.2.1 Test conditions . 16
5.2.2 Measurement conditions . 16
5.2.3 Voltage treatment . 16
5.2.4 Thermal treatment . 16
5.3 Drying . 16
5.4 Storage . 17
5.4.1 Storage at high temperature . 17
5.4.2 Storage at low temperature . 17
6 Electrical tests and measurements . 17
6.1 Measurement method 1 for capacitance and internal resistance (constant
current discharge) . 17
6.1.1 Basic circuit for measuring . 17
6.1.2 Measuring equipment . 18
6.1.3 Measurement procedure . 19
6.1.4 Calculation methods for capacitance . 21
6.1.5 Calculation methods for internal resistance. 22
6.1.6 Conditions to be prescribed in the detail specification . 23
6.2 Measurement method 2 for capacitance and internal resistance . 23
6.2.1 Constant resistance charging method for capacitance measurement . 23
6.2.2 AC internal resistance measurement method . 24
6.3 Leakage current . 24
6.3.1 Measurement method . 24
6.3.2 Items to be specified in the detail specification . 26
6.4 Maintain voltage. 26
6.4.1 Measurement method . 26
6.4.2 Calculation of voltage maintenance rate . 27
6.4.3 Conditions to be prescribed in the detail specification . 27
7 Mechanical tests and measurements . 27
7.1 Visual examination and check of dimensions . 27
7.1.1 Visual examination . 27
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SIST EN IEC 62391-1:2023
IEC 62391-1:2022 © IEC 2022 – 3 –
7.1.2 Dimensions (gauging) . 27
7.1.3 Dimensions (detail) . 28
7.2 Robustness of terminations . 28
7.2.1 Test Ua1 – Tensile . 28
7.2.2 Test Ub – Bending (half of the sample) . 28
7.2.3 Test Uc – Torsion (remaining sample) . 28
7.2.4 Test Ud – Torque (for terminations with threaded studs or screws and
for integral mounting devices) . 28
7.2.5 Visual examination . 29
7.3 Vibration . 29
7.3.1 Initial measurement . 29
7.3.2 Test . 29
7.3.3 Final measurement and requirements . 29
8 Environmental and climatic tests . 29
8.1 Rapid change of temperature . 29
8.1.1 Initial measurement . 29
8.1.2 Test . 29
8.1.3 Final inspection, measurements and requirements. 29
8.2 Damp heat, steady state . 30
8.2.1 Initial measurement . 30
8.2.2 Test . 30
8.2.3 Final measurement . 30
8.3 Endurance . 30
8.3.1 Initial measurements . 30
8.3.2 Test . 30
8.3.3 Final measurement, inspection and requirements . 30
8.4 Characteristics at high and low temperature . 31
8.4.1 General . 31
8.4.2 Test procedure . 31
8.4.3 Dry heat . 31
8.4.4 Cold. 31
8.4.5 Final measurement and requirements . 31
9 Tests related to component assembly . 31
9.1 Resistance to soldering heat . 31
9.1.1 Preconditioning and initial measurement . 31
9.1.2 Test . 31
9.1.3 Recovery . 32
9.1.4 Final inspection, measurements and requirements. 32
9.2 Solderability . 32
9.2.1 General . 32
9.2.2 Preconditioning . 32
9.2.3 Capacitors with leads . 32
9.2.4 Surface mount capacitors . 33
9.3 Component solvent resistance . 33
9.3.1 Initial measurements . 33
9.3.2 Test . 33
9.3.3 Requirements . 33
9.4 Solvent resistance of marking . 34
9.4.1 Test . 34
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SIST EN IEC 62391-1:2023
– 4 – IEC 62391-1:2022 © IEC 2022
9.4.2 Requirements . 34
10 Tests related to safety . 34
10.1 Passive flammability . 34
10.1.1 Test procedure . 34
10.1.2 Requirements . 34
10.2 Pressure relief (if applicable) . 35
10.2.1 Test . 35
10.2.2 Requirements . 35
11 Quality assessment procedures . 35
Annex A (normative) Classification according to capacitance and internal resistance . 36
A.1 General . 36
A.2 Classification by capacitance and internal resistance . 36
Annex B (informative) Measurement method of capacitance and low resistance by low
frequency AC method (reference) . 38
B.1 General . 38
B.2 Measurement system . 38
B.3 Calculation of capacitance . 38
B.4 Measurement conditions . 39
Annex C (informative) Thermal equilibrium time of capacitors . 40
C.1 General . 40
C.2 Thermal equilibrium time of capacitors . 40
Annex D (informative) Charging/discharging efficiency and measurement current . 42
D.1 General . 42
D.2 Charging efficiency, discharging efficiency, and current . 42
D.2.1 Calculation assuming full charge and discharge . 42
D.2.2 Calculation assuming incomplete charging and discharging due to
internal resistance . 43
Annex E (informative) Procedures for setting the measurement current of capacitor
with uncertain nominal internal resistance . 46
E.1 General . 46
E.2 Current setting procedures for measurement of capacitor . 46
E.3 Example of a current setting for determining capacitor characteristics . 46
Annex F (informative) Policy on uncertainty of measurement and inset limits . 47
F.1 Objective . 47
F.2 Calculation of measurement uncertainty . 47
F.3 Policy . 47
F.4 Calculation of inset and outset limits . 47
F.5 Examples . 48
F.5.1 General . 48
F.5.2 Example 1: Resistor measurement . 48
F.5.3 Example 2: Resistor measurement . 48
F.5.4 Example 3: Transistor measurement (gain) . 48
F.5.5 Example 4: Comparison between initial and final measurement results . 48
Annex Q (normative) Quality assessment procedures . 49
Q.1 General . 49
Q.1.1 Overview . 49
Q.1.2 Applicability of qualification approval . 49
Q.1.3 Applicability of capability approval . 49
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SIST EN IEC 62391-1:2023
IEC 62391-1:2022 © IEC 2022 – 5 –
Q.1.4 Applicability of technology approval . 50
Q.2 Primary stage of manufacture . 50
Q.3 Subcontracting . 50
Q.4 Structurally similar components . 50
Q.5 Qualification approval procedures . 50
Q.5.1 Eligibility for qualification approval . 50
Q.5.2 Application for qualification approval . 51
Q.5.3 Test procedure for qualification approval . 51
Q.5.4 Granting of qualification approval . 51
Q.5.5 Maintenance of qualification approval . 51
Q.5.6 Quality conformance inspection . 51
Q.6 Capability approval procedures . 51
Q.6.1 General . 51
Q.6.2 Eligibility for capability approval . 52
Q.6.3 Application for capability approval . 52
Q.6.4 Description of capability . 52
Q.6.5 Demonstration and verification of capability . 53
Q.6.6 Programme for capability approval . 53
Q.6.7 Capability approval test report . 54
Q.6.8 Abstract of description of capability . 54
Q.6.9 Modifications likely to affect the capability approval . 54
Q.6.10 Initial capability approval . 54
Q.6.11 Granting of capability approval . 55
Q.6.12 Maintenance of capability approval . 55
Q.6.13 Extension of capability approval . 56
Q.6.14 Quality conformance inspection . 56
Q.7 Rework and repair. 56
Q.7.1 Rework .
...
SLOVENSKI STANDARD
oSIST prEN IEC 62391-1:2022
01-januar-2022
Nespremenljivi električni dvoplastni kondenzatorji za električno in elektronsko
opremo - 1. del: Rodovna specifikacija
Fixed electric double-layer capacitors for use in electric and electronic equipment - Part
1: Generic specification
Elektrische Doppelschichtkondensatoren zur Verwendung in elektrischen und
elektronischen Geräten - Teil 1: Fachgrundspezifikation
Condensateurs électriques fixes à double couche utilisé dans les équipements
électriques et électroniques - Partie 1: Spécification générique
Ta slovenski standard je istoveten z: prEN IEC 62391-1:2021
ICS:
31.060.10 Fiksni kondenzatorji Fixed capacitors
oSIST prEN IEC 62391-1:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 62391-1:2022
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oSIST prEN IEC 62391-1:2022
40/2887/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62391-1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-11-19 2022-02-11
SUPERSEDES DOCUMENTS:
40/2835/CD, 40/2871/CC
IEC TC 40 : CAPACITORS AND RESISTORS FOR ELECTRONIC EQUIPMENT
SECRETARIAT: SECRETARY:
Netherlands Mr Ronald Drenthen
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.
TITLE:
Fixed electric double-layer capacitors for use in electric and electronic equipment - Part 1: Generic
specification
PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
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oSIST prEN IEC 62391-1:2022
IEC 62391-1 Ed.3:20xx © IEC (E) – 2 – 40/2887/CDV
1 CONTENTS
2
3 FOREWORD . 7
4 1 Scope . 9
5 2 Normative references . 9
6 3 Terms and definitions . 10
7 4 General requirements . 14
8 4.1 Unit and symbols . 14
9 4.2 Preferred values and class . 14
10 4.2.1 General . 14
11 4.2.2 Preferred values of nominal capacitance . 14
12 4.2.3 Class . 14
13 4.3 Marking . 14
14 4.3.1 General . 14
15 4.3.2 Coding . 14
16 5 General provisions for tests and measurement procedures . 15
17 5.1 General . 15
18 5.2 Test and measurement requirements . 15
19 5.2.1 Test conditions . 15
20 5.2.2 Measurement conditions . 15
21 5.2.3 Voltage treatment . 15
22 5.2.4 Thermal treatment . 15
23 5.3 Drying . 15
24 5.4 Storage . 16
25 5.4.1 Storage at high temperature . 16
26 5.4.2 Storage at low temperature . 16
27 6 Electrical tests and measurements . 16
28 6.1 Measurement method 1 for capacitance and internal resistance (constant
29 current discharge) . 16
30 6.1.1 Basic circuit for measuring . 16
31 6.1.2 Measuring equipment . 17
32 6.1.3 Measuring procedure . 18
33 6.1.4 Calculation methods for capacitance . 20
34 6.1.5 Calculation methods for internal resistance. 21
35 6.1.6 Conditions to be prescribed in the detail specification . 22
36 6.2 Measurement method 2 for capacitance and internal resistance . 22
37 6.2.1 Constant resistance charging method for capacitance measurement . 22
38 6.2.2 AC internal resistance measuring method . 23
39 6.3 Leakage current . 23
40 6.3.1 Measuring method . 23
41 6.3.2 Items to be specified in the detail specification . 25
42 6.4 Maintain voltage. 25
43 6.4.1 Measuring method . 25
44 6.4.2 Calculation of voltage maintenance rate . 26
45 6.4.3 Conditions to be prescribed in the detail specification . 26
46 7 Mechanical tests and measurements . 26
47 7.1 Visual examination and check of dimensions . 26
48 7.1.1 Visual examination . 26
49 7.1.2 Dimensions (gauging) . 26
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oSIST prEN IEC 62391-1:2022
IEC 62391-1 Ed.3:20xx © IEC (E) – 3 – 40/2887/CDV
50 7.1.3 Dimensions (detail) . 27
51 7.2 Robustness of terminations . 27
52 7.2.1 Test Ua1 – Tensile . 27
53 7.2.2 Test Ub – Bending (half of the sample) . 27
54 7.2.3 Test Uc – Torsion (remaining sample) . 27
55 7.2.4 Test Ud – Torque (for terminations with threaded studs or screws and
56 for integral mounting devices) . 27
57 7.2.5 Visual examination . 28
58 7.3 Vibration . 28
59 7.3.1 Initial measurement . 28
60 7.3.2 Test . 28
61 7.3.3 Final measurement and requirements . 28
62 8 Environmental and climatic tests . 28
63 8.1 Rapid change of temperature . 28
64 8.1.1 Initial measurement . 28
65 8.1.2 Test . 28
66 8.1.3 Final inspection, measurements and requirements. 28
67 8.2 Damp heat, steady state . 29
68 8.2.1 Initial measurement . 29
69 8.2.2 Test . 29
70 8.2.3 Final measurement . 29
71 8.3 Endurance . 29
72 8.3.1 Initial measurements . 29
73 8.3.2 Test . 29
74 8.3.3 Final measurement, inspection and requirements . 29
75 8.4 Characteristics at high and low temperature . 29
76 8.4.1 General . 29
77 8.4.2 Test procedure . 30
78 8.4.3 Dry heat . 30
79 8.4.4 Cold. 30
80 8.4.5 Final measurement and requirements . 30
81 9 Tests related to component assembly . 30
82 9.1 Resistance to soldering heat . 30
83 9.1.1 Preconditioning and initial measurement . 30
84 9.1.2 Test . 30
85 9.1.3 Recovery . 31
86 9.1.4 Final inspection, measurements and requirements. 31
87 9.2 Solderability . 31
88 9.2.1 General . 31
89 9.2.2 Preconditioning . 31
90 9.2.3 Capacitors with leads . 31
91 9.2.4 Surface mount capacitors . 32
92 9.3 Component solvent resistance . 32
93 9.3.1 Initial measurements . 32
94 9.3.2 Test . 32
95 9.3.3 Requirements . 32
96 9.4 Solvent resistance of marking . 32
97 9.4.1 Test . 32
98 9.4.2 Requirements . 33
99 10 Tests related to safety . 33
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100 10.1 Passive flammability . 33
101 10.1.1 Test procedure . 33
102 10.1.2 Requirements . 33
103 10.2 Pressure relief (if applicable) . 33
104 10.2.1 Test . 33
105 10.2.2 Requirements . 33
106 11 Quality assessment procedures . 34
107 Annex A (normative) Classification according to capacitance and internal resistance . 35
108 A.1 General . 35
109 A.2 Classification by capacitance and internal resistance . 35
110 Annex B (informative) Measuring method of capacitance and low resistance by low
111 frequency AC method (reference) . 38
112 B.1 General . 38
113 B.2 Measuring system . 38
114 B.3 Calculation of capacitance . 38
115 B.4 Measuring conditions . 39
116 Annex C (informative) Thermal equilibrium time of capacitors . 40
117 C.1 General . 40
118 C.2 Thermal equilibrium time of capacitors . 40
119 Annex D (informative) Charging/discharging efficiency and measurement current . 42
120 D.1 General . 42
121 D.2 Charging efficiency, discharging efficiency, and current . 42
122 D.2.1 Calculation assuming full charge and discharge . 42
123 D.2.2 Calculation assuming incomplete charging and discharging due to
124 internal resistance . 43
125 Annex E (informative) Procedures for setting the measurement current of capacitor
126 with uncertain nominal internal resistance . 46
127 E.1 General . 46
128 E.2 Current setting procedures for measurement of capacitor . 46
129 E.3 Example of setting current for determining capacitor characteristics . 46
130 Annex F (informative) Policy on uncertainty of measurement and inset limits . 47
131 F.1 Objective . 47
132 F.2 Terms and definitions . 47
133 F.3 Calculation of measurement uncertainty . 47
134 F.4 Policy . 48
135 F.5 Calculation of inset and outset limits . 48
136 F.6 Examples . 48
137 F.6.1 General . 48
138 F.6.2 Example 1: Resistor measurement . 48
139 F.6.3 Example 2: Resistor measurement . 49
140 F.6.4 Example 3: Transistor measurement (gain) . 49
141 F.6.5 Example 4: Comparison between initial and final measurement results . 49
142 Annex G (informative) Reference to IEC 62391-1:2015 . 50
143 Annex Q (normative) Quality assessment procedures . 51
144 Q.1 General . 51
145 Q.1.1 Overview . 51
146 Q.1.2 Applicability of qualification approval . 51
147 Q.1.3 Applicability of capability approval . 51
148 Q.1.4 Applicability of technology approval . 52
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149 Q.2 Primary stage of manufacture . 52
150 Q.3 Subcontracting . 52
151 Q.4 Structurally similar components . 52
152 Q.5 Qualification approval procedures . 52
153 Q.5.1 Eligibility for qualification approval . 52
154 Q.5.2 Application for qualification approval . 53
155 Q.5.3 Test procedure for qualification approval . 53
156 Q.5.4 Granting of qualification approval . 53
157 Q.5.5 Maintenance of qualification approval . 53
158 Q.5.6 Quality conformance inspection . 53
159 Q.6 Capability approval procedures . 53
160 Q.6.1 General . 53
161 Q.6.2 Eligibility for capability approval . 54
162 Q.6.3 Application for capability approval . 54
163 Q.6.4 Description of capability . 54
164 Q.6.5 Demonstration and verification of capability . 55
165 Q.6.6 Programme for capability approval . 55
166 Q.6.7 Capability approval test report . 56
167 Q.6.8 Abstract of description of capability . 56
168 Q.6.9 Modifications likely to affect the capability approval . 56
169 Q.6.10 Initial capability approval . 56
170 Q.6.11 Granting of capability approval . 57
171 Q.6.12 Maintenance of capability approval . 57
172 Q.6.13 Extension of capability approval . 58
173 Q.6.14 Quality conformance inspection . 58
174 Q.7 Rework and repair. 58
175 Q.7.1 Rework . 58
176 Q.7.2 Repair . 58
177 Q.8 Release for delivery . 59
178 Q.8.1 General . 59
179 Q.8.2 Release for delivery under qualification approval before the completion
180 of Group B tests . 59
181 Q.9 Certified test records of released lots . 59
182 Q.10 Delayed delivery . 59
183 Q.11 Alternative test methods . 59
184 Q.12 Manufacture outside the geographical limits of IECQ CBs . 59
185 Q.13 Unchecked parameters . 59
186 Q.14 Technology approval procedures . 60
187 Q.14.1 General . 60
188 Q.14.2 Eligibility for technology approval . 60
189 Q.14.3 Application of technology approval . 60
190 Q.14.4 Description of technology . 60
191 Q.14.5 Demonstration and verification of the technology . 60
192 Q.14.6 Granting of technology approval . 60
193 Q.14.7 Maintenance of technology approval . 60
194 Q.14.8 Quality conformance inspection . 60
195 Q.14.9 Failure rate level determination. 60
196 Q.14.10 Outgoing quality level . 60
197 Bibliography . 61
198
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199 Figure 1 − Basic circuit for measuring . 17
200 Figure 2 – Voltage–time characteristics between capacitor terminals in capacitance
201 and internal resistance measurement . 18
202 Figure 3 − Circuit for constant resistance charging method . 22
203 Figure 4 − Circuit for AC resistance method . 23
204 Figure 5 − Electrical circuit for measuring leakage currents . 24
205 Figure 6 − Diagram of current and voltage changes at the time of measuring the
206 leakage current . 25
207 Figure 7 − Maintain voltage test diagram . 26
208 Figure A.1 – Conceptual rendering orientated by characteristics in each classification . 36
209 Figure B.1 – Capacitance measuring system by the low frequency AC method . 38
210 Figure C.1 – Thermal equilibrium times of capacitors (from 85 °C to 25 °C) . 40
211 Figure C.2 – Thermal equilibrium times of capacitors (from −40 °C to 25 °C) . 41
212 Figure C.3 – Capacitor core temperature change with respect to time . 41
213 Figure Q.1 – General scheme for capability approval . 54
214
215 Table 1 – Measuring conditions for measuring method 1A . 19
216 Table 2 – Measuring conditions for measuring method 1B . 20
217 Table 3 – Tensile force . 27
218 Table 4 – Torque . 28
219 Table 5 – Severities and requirements . 33
220 Table A.1 – Electrical performance and measuring method by class . 36
221 Table E.1 – Example of setting current for measurement of capacitor . 46
222
223
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224 INTERNATIONAL ELECTROTECHNICAL COMMISSION
225 ____________
226
227 FIXED ELECTRIC DOUBLE-LAYER CAPACITORS
228 FOR USE IN ELECTRIC AND ELECTRONIC EQUIPMENT –
229
230 Part 1: Generic specification
231
232 FOREWORD
233 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
234 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
235 inter
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