EN IEC 60384-24:2021

SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 60384-24:2015
SIST EN 60384-24:2015/AC:2017
Nespremenljivi kondenzatorji za elektronsko opremo - 24. del: Področna
specifikacija - Nespremenljivi tantalovi elektrolitski kondenzatorji s prevodnim
polimernim trdim elektrolitom za površinsko montažo (IEC 60384-24:2021)
Fixed capacitors for use in electronic equipment - Part 24: Sectional specification - Fixed
tantalum electrolytic surface mount capacitors with conductive polymer solid electrolyte
(IEC 60384-24:2021)
Festkondensatoren zur Verwendung in Geräten der Elektronik – Teil 24:
Rahmenspezifikation – Oberflächenmontierbare Tantal-Elektrolyt-Kondensatoren mit
leitfähigem Polymerfestkörper-Elektrolyten (IEC 60384-24:2021)
Condensateurs fixes utilisés dans les équipements électroniques - Partie 24:
Spécification intermédiaire - Condensateurs fixes électrolytiques au tantale pour
montage en surface à électrolyte solide en polymère conducteur (IEC 60384-24:2021)
Ta slovenski standard je istoveten z: EN IEC 60384-24:2021
ICS:
31.060.40 Tantalski elektrolitni Tantalum electrolytic
kondenzatorji capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60384-24

NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2021
ICS 31.060.40; 31.060.50 Supersedes EN 60384-24:2015 and all of its
amendments and corrigenda (if any)
English Version
Fixed capacitors for use in electronic equipment - Part 24:
Sectional specification - Fixed tantalum electrolytic surface
mount capacitors with conductive polymer solid electrolyte
(IEC 60384-24:2021)
Condensateurs fixes utilisés dans les équipements Festkondensatoren zur Verwendung in Geräten der
électroniques - Partie 24: Spécification intermédiaire - Elektronik - Teil 24: Rahmenspezifikation -
Condensateurs fixes électrolytiques au tantale pour Oberflächenmontierbare Tantal-Elektrolyt-Kondensatoren
montage en surface à électrolyte solide en polymère mit leitfähigem Polymerfestkörper-Elektrolyten
conducteur (IEC 60384-24:2021)
(IEC 60384-24:2021)
This European Standard was approved by CENELEC on 2021-08-18. 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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60384-24:2021 E

European foreword
The text of document 40/2849/FDIS, future edition 3 of IEC 60384-24, 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 60384-24:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–05–18
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–08–18
document have to be withdrawn
This document supersedes EN 60384-24:2015 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 60384-24:2021 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 standards
indicated:
IEC 60068-2-58:2015 NOTE Harmonized as EN 60068-2-58:2015 (not modified)
IEC 60384-3 NOTE Harmonized as EN 60384-3
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 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 60384-1 2016 Fixed capacitors for use in electronic EN 60384-1 2016
equipment - Part 1: Generic specification
IEC 61193-2 2007 Quality assessment systems - Part 2: EN 61193-2 2007
Selection and use of sampling plans for
inspection of electronic components and
packages
IEC 60384-24 ®
Edition 3.0 2021-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –

Part 24: Sectional specification – Fixed tantalum electrolytic surface mount

capacitors with conductive polymer solid electrolyte

Condensateurs fixes utilisés dans les équipements électroniques –

Partie 24: Spécification intermédiaire – Condensateurs fixes électrolytiques

au tantale pour montage en surface à électrolyte solide en polymère conducteur

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.40; 31.060.50 ISBN 978-2-8322-9978-4

– 2 – IEC 60384-24:2021 © IEC 2021
CONTENTS
FOREWORD. 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Preferred ratings and characteristics . 8
4.1 Preferred characteristics . 8
4.2 Preferred values of ratings . 8
4.2.1 Nominal capacitance (C ) . 8
N
4.2.2 Tolerance on nominal capacitance . 8
4.2.3 Rated voltage (U ) . 8
R
4.2.4 Category voltage (U ) . 9
C
4.2.5 Surge voltage (U or U ) . 9
RS CS
4.2.6 Rated temperature . 9
5 Test and measurement procedures . 9
5.1 General . 9
5.2 Preliminary drying . 9
5.3 Measuring conditions . 9
5.4 Mounting . 10
5.4.1 General . 10
5.4.2 Initial inspections . 10
5.4.3 Test conditions . 10
5.4.4 Final inspections and requirements . 10
5.5 Visual examination and check of dimensions . 10
5.5.1 General . 10
5.5.2 Visual examination and check of dimensions . 10
5.5.3 Requirements . 10
5.6 Electrical tests . 10
5.6.1 Leakage current . 10
5.6.2 Capacitance . 11
5.6.3 Tangent of loss angle (tan δ) . 11
5.6.4 Equivalent series resistance (ESR) (if required) . 11
5.7 Resistance to soldering heat . 12
5.7.1 General . 12
5.7.2 Initial inspections . 12
5.7.3 Test conditions . 12
5.7.4 Recovery . 12
5.7.5 Final inspections and requirements . 12
5.8 Solderability . 12
5.8.1 General . 12
5.8.2 Final inspections and requirements . 12
5.9 Shear test . 12
5.10 Substrate bending test (if required) . 12
5.10.1 General . 12
5.10.2 Initial inspections . 12
5.10.3 Test conditions . 12
5.10.4 Final inspections and requirements . 12

IEC 60384-24:2021 © IEC 2021 – 3 –
5.11 Rapid change of temperature . 13
5.11.1 General . 13
5.11.2 Initial inspections . 13
5.11.3 Test conditions . 13
5.11.4 Recovery . 13
5.11.5 Final inspections and requirements . 13
5.12 Climatic sequence . 13
5.12.1 General . 13
5.12.2 Initial inspections . 13
5.12.3 Dry heat . 13
5.12.4 Damp heat, cyclic, test Db, first cycle . 13
5.12.5 Cold. 13
5.12.6 Damp heat, cyclic, test Db, remaining cycles . 14
5.12.7 Recovery . 14
5.12.8 Final inspections and requirements . 14
5.13 Damp heat, steady state . 14
5.13.1 General . 14
5.13.2 Initial inspections . 14
5.13.3 Test conditions . 14
5.13.4 Recovery . 14
5.13.5 Final inspections and requirements . 14
5.14 Characteristics at high and low temperature . 14
5.14.1 General . 14
5.14.2 Initial inspections and requirements . 14
5.15 Surge voltage . 14
5.15.1 General . 14
5.15.2 Initial inspections . 15
5.15.3 Test conditions . 15
5.15.4 Recovery . 15
5.15.5 Final inspections and requirements . 15
5.16 Endurance . 15
5.16.1 General . 15
5.16.2 Initial inspections . 15
5.16.3 Test conditions . 16
5.16.4 Recovery . 16
5.16.5 Final inspections and requirements . 16
5.17 Component solvent resistance (if required) . 16
5.18 Solvent resistance of marking (if required) . 16
5.19 High surge current (if required) . 16
5.20 Storage at high temperature . 16
5.20.1 General . 16
5.20.2 Initial inspections . 16
5.20.3 Test conditions . 16
5.20.4 Recovery . 16
5.20.5 Final inspections and requirements . 16
6 Marking . 17
6.1 General . 17
6.2 Information for marking . 17
6.3 Marking on capacitors . 17

– 4 – IEC 60384-24:2021 © IEC 2021
6.4 Marking on packaging . 17
7 Information to be given in a detail specification . 17
7.1 General . 17
7.2 Outline drawing and dimensions . 17
7.3 Mounting . 18
7.4 Ratings and characteristics . 18
7.4.1 General . 18
7.4.2 Nominal capacitance range . 18
7.4.3 Particular characteristics . 18
7.4.4 Soldering . 18
7.5 Marking . 18
8 Quality assessment procedures . 19
8.1 Primary stage of manufacture . 19
8.2 Structurally similar components . 19
8.3 Certified test records of released lots . 19
8.4 Qualification approval (QA) procedures . 19
8.4.1 General . 19
8.4.2 Qualification approval on the basis of the fixed sample size procedure . 19
8.4.3 Tests . 20
8.5 Quality conformance inspections . 27
8.5.1 Formation of inspection lots. 27
8.5.2 Test schedule . 28
8.5.3 Delayed delivery . 28
8.5.4 Assessment levels . 28
Annex X (informative) Cross-references to the prior edition of this document . 30
Bibliography . 31

Table 1 – Category and surge voltages . 9
Table 2 – Category and surge voltages . 9
Table 3 – Sampling plan for qualification approval, assessment level EZ . 21
Table 4 – Test schedule for qualification approval . 22
Table 5 – Lot-by-lot inspection . 28
Table 6 – Periodic inspection . 29
Table X.1 – Reference to IEC 60384-24 for clauses/subclauses and tables . 30

IEC 60384-24:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 24: Sectional specification – Fixed tantalum electrolytic surface
mount capacitors with conductive polymer solid electrolyte

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-
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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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60384-24 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This third edition cancels and replaces the second edition published in 2015. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Revision of the structure in accordance with ISO/IEC Directives, Part 2:2018, to the extent
practicable, and harmonization between other similar kinds of documents.
b) In addition, Clause 5 and all the tables have been reviewed in order to prevent
duplications and contradictions.

– 6 – IEC 60384-24:2021 © IEC 2021
The text of this standard is based on the following documents:
FDIS Report on voting
40/2849/FDIS 40/2860/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 60384 series, published under the general title Fixed capacitors
for use in electronic equipment, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at http://www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 60384-24:2021 © IEC 2021 – 7 –
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 24: Sectional specification – Fixed tantalum electrolytic surface
mount capacitors with conductive polymer solid electrolyte

1 Scope
This part of IEC 60384 applies to fixed tantalum electrolytic surface mount capacitors with
conductive polymer solid electrolyte, which are primarily intended for DC applications for use
in electronic equipment.
Fixed tantalum electrolytic surface mount capacitors with solid (MnO ) electrolyte are not
included but are covered by IEC 60384-3.
These capacitors are primarily intended for use in electronic equipment to be mounted directly
on substrates for hybrid circuits or to printed boards.
Capacitors for special-purpose applications can need additional requirements.
The object of this document is to prescribe preferred ratings and characteristics and to select
from IEC 60384-1:2016 the appropriate quality assessment procedures, tests and measuring
methods and to give general performance requirements for this type of capacitor.
2 Normative references
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.
IEC 60063, Preferred number series for resistors and capacitors
IEC 60068-1:2013, Environmental testing – Part 1: General and guidance
IEC 60384-1:2016, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling plans
for inspection of electronic components and packages
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60384-1:2016 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 8 – IEC 60384-24:2021 © IEC 2021
3.1
capacitance
capacitance of an equivalent circuit whose capacitance and
resistance in series is measured with an alternating current having an approximately
sinusoidal waveform at a specified frequency
4 Preferred ratings and characteristics
4.1 Preferred characteristics
Preferred climatic categories only shall be given in the preferred characteristics.
The capacitors covered by this sectional specification are classified into climatic categories in
accordance with the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperature shall be taken from the following:
• lower category temperature: −55 °C;
• upper category temperature: +105 °C and +125 °C.
The severities for the cold and dry heat tests are the lower and upper category temperatures
respectively.
The upper category temperature shall be 105 °C or 125 °C for a rated temperature of 85 °C.
The upper category temperature shall be 125 °C for a rated temperature of 105 °C.
4.2 Preferred values of ratings
4.2.1 Nominal capacitance (C )
N
Preferred values of nominal capacitance are indicated in microfarad (µF).
Preferred values of nominal capacitance shall be taken from the E 12 series of IEC 60063 as
follows:
1,0 – 1,2 – 1,5 – 1,8 – 2,2 – 2,7 – 3,3 – 3,9 – 4,7 – 5,6 – 6,8 – 8,2;
n
and their decimal multiples (× 10 , n: integer).
4.2.2 Tolerance on nominal capacitance
Preferred value of tolerance on nominal capacitance is:
±20 %.
4.2.3 Rated voltage (U )
R
Preferred values of rated DC voltages taken from R10 and R20 series of ISO 3 are:
– from R10: 1,0 – 1,25 – 1,6 – 2,0 – 2,5 – 4,0 – 5,0 – 6,3 – 8,0;

– from R20: 3,5 ;
n
– and their decimal multiples (× 10 , n: integer).
_____________
ISO 3 indicates the value 3,55 for R20.

IEC 60384-24:2021 © IEC 2021 – 9 –
4.2.4 Category voltage (U )
C
The category voltage for capacitors is given in Table 1 and Table 2.
4.2.5 Surge voltage (U or U )
RS CS
The surge voltage shall be 1,15 times the rated or category voltage rounded off to the nearest
volt (two significant digits) (see Table 1 and Table 2).
NOTE U is the surge voltage to rated voltage;
RS
U is the surge voltage to category voltage.
CS
4.2.6 Rated temperature
The value of the rated temperature is +85 °C and +105 °C (see Table 1 and Table 2).
Table 1 – Category and surge voltages
Values in volts
Upper category temperature 125 °C / rated temperature 85 °C
U 2,0 2,5 4,0 5,0 6,3 8,0 10 12,5 16 20 25 35
R
U = 0,80 U 1,6 2,0 3,2 4,0 5,0 6,4 8,0 10 13 16 20 28
C R
U
2,3 2,9 4,6 5,8 7,2 9,2 12 14 18 23 29 40
RS
U 1,8 2,3 3,7 4,6 5,8 7,4 9,2 12 15 18 23 32
CS
Table 2 – Category and surge voltages
Values in volts
Upper category temperature 125 °C / rated temperature 105 °C

or upper category temperature 105 °C / rated temperature 85 °C
U 2,0 2,5 4,0 5,0 6,3 8,0 10 12,5 16 20 25 35
R
U = 0,90 U 1,8 2,3 3,6 4,5 5,7 7,2 9,0 11 14 18 23 32
C R
U 2,3 2,9 4,6 5,8 7,2 9,2 12 14 18 23 29 40
RS
U 2,0 2,6 4,1 5,2 6,5 8,2 10 13 16 20 26 36
CS
5 Test and measurement procedures
5.1 General
Test severities and requirements prescribed in detail specifications referring to this sectional
specification are of equal or higher performance level, because lower performance levels are
not permitted.
This clause supplements the information given in IEC 60384-1:2016, Clause 4.
5.2 Preliminary drying
See IEC 60384-1:2016, 4.3.
5.3 Measuring conditions
See IEC 60384-1:2016, 4.2.1.
– 10 – IEC 60384-24:2021 © IEC 2021
5.4 Mounting
5.4.1 General
See IEC 60384-1:2016, 4.33, with 5.4.2, 5.4.3 and 5.4.4 of this document.
5.4.2 Initial inspections
See Table 4.
5.4.3 Test conditions
The test method shall be the reflow method and reflow temperature profile specified in the
detail specification.
5.4.4 Final inspections and requirements
See Table 4.
5.5 Visual examination and check of dimensions
5.5.1 General
See IEC 60384-1:2016, 4.4, with 5.5.2 and 5.5.3 of this document.
5.5.2 Visual examination and check of dimensions
Visual examination shall be carried out with suitable equipment with approximately 10×
magnification and lighting appropriate to the specimen under test and the quality level
required. The operator should have available facilities for incident or transmitted illumination,
as well as an appropriate measuring facility. The capacitors shall be examined to verify that
the materials, design, construction, and physical dimensions are appropriate.
5.5.3 Requirements
The workmanship shall be in accordance with the applicable requirements given in the detail
specification.
5.6 Electrical tests
5.6.1 Leakage current
5.6.1.1 General
See IEC 60384-1:2016, 4.9, with 5.6.1.2 and 5.6.1.3 of this document.
5.6.1.2 Measuring conditions
The rated voltage shall be applied across the capacitor and its protective resistor placed in
series with the capacitor to limit the charging current.
The protective resistor shall have a value of 1 000 Ω.
5.6.1.3 Requirements
See Table 4.
IEC 60384-24:2021 © IEC 2021 – 11 –
5.6.2 Capacitance
5.6.2.1 General
See IEC 60384-1:2016, 4.7, with 5.6.2.2 and 5.6.2.3 of this document.
5.6.2.2 Measuring conditions
Unless otherwise specified in the detail specifications, the capacitance shall be measured at a
frequency of 100 Hz or 120 Hz.
The peak alternating voltage actually applied across the capacitor terminations shall not
exceed 0,5 V (RMS).
A DC bias voltage of 0,7 V to 1,0 V may be applied during the measurement to avoid negative
voltage application to the capacitor by the applied AC voltage.
The inaccuracy of the measuring instruments shall not exceed ±2 % of the limit specified in
the detail specification, whether this is given as an absolute value or as a change of
capacitance.
5.6.2.3 Requirements
See Table 4.
5.6.3 Tangent of loss angle (tan δ)
5.6.3.1 General
See IEC 60384-1:2016, 4.8.1, with 5.6.3.2 and 5.6.3.3 of this document.
5.6.3.2 Measuring conditions
The measurement shall be under the conditions as specified in 5.6.2.2.
The inaccuracy of the measuring equipment shall not exceed 0,01 in absolute value.
5.6.3.3 Requirements
See Table 4.
5.6.4 Equivalent series resistance (ESR) (if required)
5.6.4.1 General
See IEC 60384-1:2016, 4.8.2, with 5.6.4.2 and 5.6.4.3 of this document.
5.6.4.2 Measuring conditions
Unless otherwise specified in the detail specifications, test conditions are as follows:
– temperature: 20 °C ± 2 °C;
– applied voltage: peak AC value ≤ 0,5 V (RMS);
– voltage frequency: 100 kHz ± 10 kHz.
The error of measurement shall not exceed 5 % of the requirement, or 0,02 Ω, whichever is
the greater.
– 12 – IEC 60384-24:2021 © IEC 2021
5.6.4.3 Requirements
See Table 4.
5.7 Resistance to soldering heat
5.7.1 General
See IEC 60384-1:2016, 4.14, with 5.7.2 to 5.7.5 of this document.
5.7.2 Initial inspections
See Table 4.
5.7.3 Test conditions
The test method shall be the reflow method, and the reflow temperature profile shall be
specified in the detail specification.
5.7.4 Recovery
The recovery period shall be 24 h ± 2 h.
5.7.5 Final inspections and requirements
After recovery, the capacitors shall be visually examined under normal lighting and
approximately 10× magnification and measured electrical characteristics given in Table 4.
5.8 Solderability
5.8.1 General
See IEC 60384-1:2016, 4.15, with 5.8.2 of this document.
5.8.2 Final inspections and requirements
See Table 4.
5.9 Shear test
See IEC 60384-1:2016, 4.34.
5.10 Substrate bending test (if required)
5.10.1 General
See IEC 60384-1:2016, 4.35, with 5.10.2 to 5.10.4 of this document.
5.10.2 Initial inspections
See Table 4.
5.10.3 Test conditions
Deflection D and the number of bends shall be specified in the detail specification.
5.10.4 Final inspections and requirements
See Table 4.
IEC 60384-24:2021 © IEC 2021 – 13 –
5.11 Rapid change of temperature
5.11.1 General
See IEC 60384-1:2016, 4.16, with 5.11.2 to 5.11.5 of this document.
The capacitors shall be mounted in accordance with 5.4.
5.11.2 Initial inspections
See Table 4.
5.11.3 Test conditions
Test conditions are as follows:
– T = lower category temperature;
A
– T = upper category temperature;
B
– the capacitors shall be tested for 5 cycles;
– the duration of the exposure at each temperature limit shall be 30 min.
5.11.4 Recovery
The recovery period shall be 1 h to 2 h.
5.11.5 Final inspections and requirements
See Table 4.
5.12 Climatic sequence
5.12.1 General
See IEC 60384-1:2016, 4.21, with 5.12.2 to 5.12.8 of this document.
5.12.2 Initial inspections
See Table 4.
5.12.3 Dry heat
See IEC 60384-1:2016, 4.21.3, with the following details:
– temperature: upper category temperature;
– duration: 16 h.
5.12.4 Damp heat, cyclic, test Db, first cycle
See IEC 60384-1:2016, 4.21.4.
5.12.5 Cold
See IEC 60384-1:2016, 4.21.5, with the following details:
– temperature: lower category temperature;
– duration: 2 h.
– 14 – IEC 60384-24:2021 © IEC 2021
5.12.6 Damp heat, cyclic, test Db, remaining cycles
See IEC 60384-1:2016, 4.21.7.
5.12.7 Recovery
The recovery period shall be 1 h to 2 h.
5.12.8 Final inspections and requirements
See Table 4.
5.13 Damp heat, steady state
5.13.1 General
See IEC 60384-1:2016, 4.22, with 5.13.2 to 5.13.5 of this document:

The capacitors shall be mounted in accordance with 5.4.
5.13.2 Initial inspections
See Table 4.
5.13.3 Test conditions
Test conditions are as follows:
– temperature: 40 °C ± 2 °C;
– relative humidity: (93 ± 3) %;
– applied voltage: no voltage shall be applied;
– duration: 21 days.
5.13.4 Recovery
The recovery period shall be 1 h to 2 h.
5.13.5 Final inspections and requirements
See Table 4.
5.14 Characteristics at high and low temperature
5.14.1 General
See IEC 60384-1:2016, 4.29, with 5.14.2 of this document:

The capacitors shall be mounted in accordance with 5.4.
5.14.2 Initial inspections and requirements
The capacitors shall be measured at each temperature step and shall meet the requirements
given in Table 4.
5.15 Surge voltage
5.15.1 General
See IEC 60384-1:2016, 4.26, with 5.15.2 to 5.15.5 of this document.

IEC 60384-24:2021 © IEC 2021 – 15 –
5.15.2 Initial inspections
See Table 4.
5.15.3 Test conditions
Test conditions are as follows:
– number of cycles: 1 000;
– temperature: 15 °C to upper category temperature with the applicable
requirements given in the detail specification;
– voltage: 1,15 U or 1,15 U ;
R C
– charge resistor: 1 000 Ω ± 100 Ω or a value calculated by Formula (1);
RC = 0,1 ± 0,05 (s) (1)
where
If the internal resistance of the power supply is negligibly smaller than 1 000 Ω, R is equal to
the resistance of the charging circuit. If the internal resistance of the power supply affects the
charging resistance of the circuit, the current value possibly gets too small to measure
correctly. On the other hand, if the time constant is 0,1 s and the capacitance is 1 000 µF, the
R value is 100 Ω. Since an excessive inrush current then flows depending on the applied
voltage, it is not possible to distinguish whether a defect, even if it occurs, is caused by the
inrush current or the surge. Therefore, either of the two conditions above should be selectable
depending on the situation at measurement.
R is the sum of the internal resistance of the power supply and resistance of the charge
circuit (Ω)
C is the value of nominal capacitance (F)
– duration of charge: 30 s;
– duration of no-load: 5 min 30 s.
5.15.4 Recovery
The recovery period shall be 1 h to 2 h.
5.15.5 Final inspections and requirements
See Table 4.
5.16 Endurance
5.16.1 General
See IEC 60384-1:2016, 4.23, with 5.16.2 to 5.16.5 of this document:
The capacitors shall be mounted in accordance with 5.4.
5.16.2 Initial inspections
See Table 4.
– 16 – IEC 60384-24:2021 © IEC 2021
5.16.3 Test conditions
Test conditions are as follows:
– applied voltage: category voltage, unless otherwise specified in the detail specification;
– temperature: upper category temperature;
– duration: 1 000 h.
NOTE When the category voltage is different from the rated voltage, the sample tested is divided into two parts
and submitted to the rated temperature and the category voltage respectively.
5.16.4 Recovery
The recovery period shall be 1 h to 2 h.
5.16.5 Final inspections and requirements
See Table 4.
5.17 Component solvent resistance (if required)
See IEC 60384-1:2016, 4.31.
5.18 Solvent resistance of marking (if required)
See IEC 60384-1:2016, 4.32.
5.19 High surge current (if required)
See IEC 60384-1:2016, 4.39.
5.20 Storage at high temperature
5.20.1 General
See IEC 60384-1:2016, 4.25.1, with 5.20.2 to 5.20.5 of this document.
5.20.2 Initial inspections
S
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