SIST EN IEC 62391-1:2023

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

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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 .
...