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

IEC 62391-1:2015 is available as IEC 62391-1:2015 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62391-1:2015 applies to fixed electric double-layer capacitors (hereafter referred to as capacitor(s)) mainly used in d.c. 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. This edition includes the following significant technical changes with respect to the previous edition:
a) enhancement of the scope to include electric (high power) application;
b) implementation of Annex Q, replacing Clause 3 in the first edition;
c) in addition, minor revisions related to tables, figures and references.
The contents of the corrigenda of December 2016 and of June 2019 have been included in this copy.

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

L'IEC 62391-1:2015 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.
La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) renforcement du domaine d'application pour inclure des applications électriques (haute puissance);
b) mise en œuvre de l’Annexe Qqui remplace l’Article 3 de la première édition;
c) en plus, des révisions mineures des tableaux, valeurs et références.
Le contenu des corrigenda de décembre 2016 et de juin 2019 a été pris en considération dans cet exemplaire.

General Information

Status
Published
Publication Date
22-Oct-2015
Current Stage
PPUB - Publication issued
Completion Date
23-Oct-2015
Ref Project

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IEC 62391-1
Edition 2.0 2015-10
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
IEC62391-1:2015-10(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62391-1
Edition 2.0 2015-10
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 978-2-8322-5160-7

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: 3 ----------------------
– 2 – IEC 62391-1:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms and definitions .................................................................................................... 10

4 General items ................................................................................................................ 14

4.1 Unit and symbols .................................................................................................. 14

4.2 Preferred values and class .................................................................................... 14

4.2.1 General ......................................................................................................... 14

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

4.4 Quality assessment procedures ............................................................................ 15

5 Tests and measurement ................................................................................................ 15

5.1 General ................................................................................................................. 15

5.2 Test and measurement requirements .................................................................... 15

5.2.1 Test conditions .............................................................................................. 15

5.2.2 Measurement conditions ................................................................................ 15

5.2.3 Voltage treatment .......................................................................................... 16

5.2.4 Thermal treatment ......................................................................................... 16

5.3 Drying ................................................................................................................... 16

5.4 Visual examination and check of dimensions ........................................................ 16

5.4.1 Visual examination ........................................................................................ 16

5.4.2 Dimensions (gauging) .................................................................................... 16

5.4.3 Dimensions (detail) ........................................................................................ 16

5.5 Measurement method 1 for capacitance and internal resistance (constant

current discharge) ................................................................................................. 16

5.5.1 Basic circuit for measuring ............................................................................ 16

5.5.2 Measuring equipment .................................................................................... 17

5.5.3 Measuring procedure ..................................................................................... 18

5.5.4 Calculation methods for capacitance ............................................................. 20

5.5.5 Calculation methods for internal resistance.................................................... 21

5.5.6 Conditions to be prescribed in the detail specification .................................... 22

5.6 Measurement method 2 for capacitance and internal resistance ............................ 22

5.6.1 Constant resistance charging method for capacitance measurement ............. 22

5.6.2 AC internal resistance measuring method ...................................................... 23

5.7 Leakage current .................................................................................................... 23

5.7.1 Measuring method ......................................................................................... 23

5.7.2 Items to be specified in the detail specification .............................................. 24

5.8 Maintain voltage.................................................................................................... 24

5.8.1 Measuring method ......................................................................................... 24

5.8.2 Calculation of voltage maintenance rate ........................................................ 25

5.8.3 Conditions to be prescribed in the detail specification .................................... 25

5.9 Robustness of terminations ................................................................................... 25

5.9.1 Test Ua1 – Tensile ........................................................................................ 25

5.9.2 Test Ub – Bending (half of the sample) .......................................................... 25

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IEC 62391-1:2015 © IEC 2015 – 3 –

5.9.3 Test Uc – Torsion (remaining sample) ........................................................... 26

5.9.4 Test Ud – Torque (for terminations with threaded studs or screws and

for integral mounting devices) ........................................................................ 26

5.9.5 Visual examination ........................................................................................ 26

5.10 Resistance to soldering heat ................................................................................. 26

5.10.1 Preconditioning and initial measurement ........................................................ 26

5.10.2 Test ............................................................................................................... 26

5.10.3 Recovery ....................................................................................................... 26

5.10.4 Final inspection, measurements and requirements......................................... 27

5.11 Solderability .......................................................................................................... 27

5.11.1 General ......................................................................................................... 27

5.11.2 Preconditioning .............................................................................................. 27

5.11.3 Capacitors with leads .................................................................................... 27

5.11.4 Surface mount capacitors .............................................................................. 28

5.12 Rapid change of temperature ................................................................................ 28

5.12.1 Initial measurement ....................................................................................... 28

5.12.2 Test ............................................................................................................... 28

5.12.3 Final inspection, measurements and requirements......................................... 28

5.13 Vibration ............................................................................................................... 28

5.13.1 Initial measurement ....................................................................................... 28

5.13.2 Test ............................................................................................................... 28

5.13.3 Final measurement and requirements ............................................................ 29

5.14 Damp heat, steady state ....................................................................................... 29

5.14.1 Initial measurement ....................................................................................... 29

5.14.2 Test ............................................................................................................... 29

5.14.3 Final measurement ........................................................................................ 29

5.15 Endurance ............................................................................................................ 29

5.15.1 Initial measurements ..................................................................................... 29

5.15.2 Test ............................................................................................................... 29

5.15.3 Final measurement, inspection and requirements .......................................... 29

5.16 Storage ................................................................................................................. 30

5.16.1 Storage at high temperature .......................................................................... 30

5.16.2 Storage at low temperature ............................................................................ 30

5.17 Characteristics at high and low temperature .......................................................... 30

5.17.1 General ......................................................................................................... 30

5.17.2 Test procedure .............................................................................................. 30

5.17.3 Dry heat ........................................................................................................ 31

5.17.4 Cold............................................................................................................... 31

5.17.5 Final measurement and requirements ............................................................ 31

5.18 Component solvent resistance .............................................................................. 31

5.18.1 Initial measurements ..................................................................................... 31

5.18.2 Test ............................................................................................................... 31

5.18.3 Requirements ................................................................................................ 31

5.19 Solvent resistance of marking ............................................................................... 31

5.19.1 Test ............................................................................................................... 31

5.19.2 Requirements ................................................................................................ 32

5.20 Passive flammability ............................................................................................. 32

5.20.1 Test procedure .............................................................................................. 32

5.20.2 Requirements ................................................................................................ 32

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– 4 – IEC 62391-1:2015 © IEC 2015

5.21 Pressure relief (if applicable) ................................................................................ 32

5.21.1 Test ............................................................................................................... 32

5.21.2 Requirements ................................................................................................ 32

Annex A (normative) Classification according to capacitance and internal resistance ........... 33

A.1 General ................................................................................................................. 33

A.2 Classification by capacitance and internal resistance ............................................ 33

Annex B (informative) Measuring method of capacitance and low resistance by low

frequency a.c. method (reference) ........................................................................................ 35

B.1 General ................................................................................................................. 35

B.2 Measuring system ................................................................................................. 35

B.3 Calculation of capacitance .................................................................................... 35

B.4 Measuring conditions ............................................................................................ 36

Annex C (informative) Thermal equilibrium time of capacitors .............................................. 37

C.1 General ................................................................................................................. 37

C.2 Thermal equilibrium time of capacitors .................................................................. 37

Annex D (informative) Charging/discharging efficiency and measurement current ................ 39

D.1 General ................................................................................................................. 39

D.2 Charging efficiency, discharging efficiency, and current ........................................ 39

Annex E (informative) Procedures for setting the measurement current of capacitor

with uncertain nominal internal resistance ............................................................................. 41

E.1 General ................................................................................................................. 41

E.2 Current setting procedures for measurement of capacitor ..................................... 41

E.3 Example of setting current for determining capacitor characteristics ..................... 41

Annex F (informative) Policy on uncertainty of measurement and inset limits ....................... 42

F.1 Objective .............................................................................................................. 42

F.2 Terms and definitions ............................................................................................ 42

F.3 Calculation of measurement uncertainty ................................................................ 42

F.4 Policy .................................................................................................................... 43

F.5 Calculation of inset and outset limits ..................................................................... 43

F.6 Examples .............................................................................................................. 43

F.6.1 General ......................................................................................................... 43

F.6.2 Example 1: Resistor measurement ................................................................ 43

F.6.3 Example 2: Resistor measurement ................................................................ 44

F.6.4 Example 3: Transistor measurement (gain) .................................................... 44

F.6.5 Example 4: Comparison between initial and final measurement results .......... 44

Annex G (informative) Reference to IEC 62391-1:2006 ........................................................ 45

Annex Q (normative) Quality assessment procedures .......................................................... 46

Q.1 General ................................................................................................................. 46

Q.1.1 Overview ....................................................................................................... 46

Q.1.2 Applicability of qualification approval ............................................................. 46

Q.1.3 Applicability of capability approval ................................................................. 46

Q.1.4 Applicability of technology approval ............................................................... 47

Q.2 Primary stage of manufacture ............................................................................... 47

Q.3 Subcontracting ...................................................................................................... 47

Q.4 Structurally similar components ............................................................................ 47

Q.5 Qualification approval procedures ......................................................................... 47

Q.5.1 Eligibility for qualification approval ................................................................. 47

Q.5.2 Application for qualification approval ............................................................. 48

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IEC 62391-1:2015 © IEC 2015 – 5 –

Q.5.3 Test procedure for qualification approval ....................................................... 48

Q.5.4 Granting of qualification approval .................................................................. 48

Q.5.5 Maintenance of qualification approval ............................................................ 48

Q.5.6 Quality conformance inspection ..................................................................... 48

Q.6 Capability approval procedures ............................................................................. 48

Q.6.1 General ......................................................................................................... 48

Q.6.2 Eligibility for capability approval ..................................................................... 49

Q.6.3 Application for capability approval ................................................................. 49

Q.6.4 Description of capability ................................................................................. 49

Q.6.5 Demonstration and verification of capability ................................................... 50

Q.6.6 Programme for capability approval ................................................................. 50

Q.6.7 Capability approval test report ....................................................................... 51

Q.6.8 Abstract of description of capability ............................................................... 51

Q.6.9 Modifications likely to affect the capability approval ....................................... 51

Q.6.10 Initial capability approval ............................................................................... 51

Q.6.11 Granting of capability approval ...................................................................... 52

Q.6.12 Maintenance of capability approval ................................................................ 52

Q.6.13 Extension of capability approval .................................................................... 53

Q.6.14 Quality conformance inspection ..................................................................... 53

Q.7 Rework and repair................................................................................................. 53

Q.7.1 Rework .......................................................................................................... 53

Q.7.2 Repair ........................................................................................................... 54

Q.8 Release for delivery .............................................................................................. 54

Q.8.1 General ......................................................................................................... 54

Q.8.2 Release for delivery under qualification approval before the completion

of Group B tests ............................................................................................ 54

Q.9 Certified test records of released lots .................................................................... 54

Q.10 Delayed delivery ................................................................................................... 54

Q.11 Alternative test methods ....................................................................................... 54

Q.12 Manufacture outside the geographical limits of IECQ CBs ..................................... 54

Q.13 Unchecked parameters ......................................................................................... 54

Q.14 Technology approval procedures .......................................................................... 55

Q.14.1 General ......................................................................................................... 55

Q.14.2 Eligibility for technology approval .................................................................. 55

Q.14.3 Application of technology approval ................................................................ 55

Q.14.4 Description of technology .............................................................................. 55

Q.14.5 Demonstration and verification of the technology ........................................... 55

Q.14.6 Granting of technology approval .................................................................... 55

Q.14.7 Maintenance of technology approval .............................................................. 55

Q.14.8 Quality conformance inspection ..................................................................... 55

Q.14.9 Failure rate level determination...................................................................... 56

Q.14.10 Outgoing quality level .................................................................................... 56

Bibliography .......................................................................................................................... 57

Figure 1 − Basic circuit for measuring ................................................................................... 17

Figure 2 – Voltage–time characteristics between capacitor terminals in capacitance

and internal resistance measurement .................................................................................... 18

Figure 3 − Circuit for constant resistance charging method ................................................... 22

Figure 4 − Circuit for a.c. resistance method ......................................................................... 23

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– 6 – IEC 62391-1:2015 © IEC 2015

Figure 5 − Maintain voltage test diagram .............................................................................. 24

Figure A.1 – Conceptual rendering orientated by characteristics in each classification .......... 34

Figure B.1 – Capacitance measuring system by the low frequency a.c. method .................... 35

Figure C
...

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