IEC 60384-4:2016

IEC 60384-4 ®
Edition 5.0 2016-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –
Part 4: Sectional specification – Fixed aluminium electrolytic capacitors with
solid (MnO ) and non-solid electrolyte
Condensateurs fixes utilisés dans les équipements électroniques –
Partie 4: Spécification intermédiaire – Condensateurs électrolytiques à
l’aluminium, à électrolyte solide (MnO ) et non solide
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IEC 60384-4 ®
Edition 5.0 2016-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –

Part 4: Sectional specification – Fixed aluminium electrolytic capacitors with

solid (MnO ) and non-solid electrolyte

Condensateurs fixes utilisés dans les équipements électroniques –

Partie 4: Spécification intermédiaire – Condensateurs électrolytiques à

l’aluminium, à électrolyte solide (MnO ) et non solide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.50 ISBN 978-2-8322-3552-2

– 2 – IEC 60384-4:2016 © IEC 2016
CONTENTS
FOREWORD . 6
1 General . 8
1.1 Scope . 8
1.2 Object . 8
1.3 Normative references . 8
1.4 Information to be given in a detail specification . 9
1.4.1 General . 9
1.4.2 Outline drawing and dimensions . 9
1.4.3 Mounting . 9
1.4.4 Ratings and characteristics . 9
1.4.5 Marking . 10
1.5 Terms and definitions . 10
1.6 Marking . 10
1.6.1 General . 10
1.6.2 Information for marking . 10
1.6.3 Marking on capacitors . 11
1.6.4 Marking on packaging . 11
2 Preferred ratings and characteristics . 11
2.1 Preferred characteristics . 11
2.2 Preferred values of ratings . 11
2.2.1 Nominal capacitance (C ) . 11
N
2.2.2 Tolerance on nominal capacitance . 12
2.2.3 Rated voltage (U ) . 12
R
2.2.4 Category voltage (U ) . 12
C
2.2.5 Ripple voltage . 12
2.2.6 Reverse voltage . 12
2.2.7 Surge voltage ratio . 12
2.2.8 Rated ripple current . 12
3 Quality assessment procedures . 13
3.1 Primary stage of manufacture . 13
3.2 Structurally similar components . 13
3.3 Certified test records of released lots . 13
3.4 Qualification approval (QA) procedures . 13
3.4.1 General . 13
3.4.2 Qualification approval on the basis of the fixed sample size procedure . 13
3.4.3 Tests . 14
3.5 Quality conformance inspection . 26
3.5.1 Formation of inspection lots . 26
3.5.2 Test schedule . 26
3.5.3 Delayed delivery . 26
3.5.4 Assessment levels . 26
4 Test and measurement procedures . 27
4.1 Pre-conditioning (for non-solid electrolyte capacitors only) . 27
4.2 Visual examination and check of dimensions . 28
4.2.1 General . 28
4.2.2 Visual examination and check of dimensions . 28

4.2.3 Requirements . 28
4.3 Electrical tests . 28
4.3.1 Leakage current . 28
4.3.2 Capacitance . 28
4.3.3 Tangent of loss angle (tan δ) or equivalent series resistance (ESR) . 29
4.3.4 Impedance (if required) . 29
4.3.5 Insulation resistance of the external insulation (if required) . 30
4.3.6 Voltage proof of the external insulation (if required) . 30
4.4 Robustness of terminations . 31
4.4.1 General . 31
4.4.2 Initial inspection . 31
4.4.3 Final inspection . 31
4.5 Resistance to soldering heat . 31
4.5.1 General . 31
4.5.2 Test conditions . 31
4.5.3 Recovery . 31
4.5.4 Final inspection and requirements . 31
4.6 Solderability . 31
4.6.1 General . 31
4.6.2 Test conditions . 31
4.6.3 Final inspection . 32
4.7 Rapid change of temperature . 32
4.7.1 General . 32
4.7.2 Initial inspection . 32
4.7.3 Test conditions . 32
4.7.4 Recovery . 32
4.7.5 Final inspections and requirements . 32
4.8 Vibration . 32
4.8.1 General . 32
4.8.2 Test conditions . 32
4.8.3 Final inspections and requirements . 33
4.9 Bump (if required) . 33
4.9.1 General . 33
4.9.2 Test conditions . 33
4.9.3 Final inspections and requirements . 33
4.10 Shock (if required) . 33
4.10.1 General . 33
4.10.2 Test conditions . 33
4.10.3 Final inspections and requirements . 34
4.11 Climatic sequence . 34
4.11.1 General . 34
4.11.2 Initial inspection . 34
4.11.3 Dry heat . 34
4.11.4 Damp heat, cyclic, test Db, first cycle . 34
4.11.5 Cold . 34
4.11.6 Low air pressure (if required). 34
4.11.7 Damp heat, cyclic, test Db, remaining cycles . 35
4.11.8 Sealing (if required) . 35
4.11.9 Final inspections and requirements . 35

– 4 – IEC 60384-4:2016 © IEC 2016
4.12 Damp heat, steady state . 35
4.12.1 General . 35
4.12.2 Initial inspection . 35
4.12.3 Test conditions . 35
4.12.4 Recovery . 35
4.12.5 Final inspections and requirements . 35
4.13 Endurance . 36
4.13.1 General . 36
4.13.2 Initial inspection . 36
4.13.3 Test conditions . 36
4.13.4 Recovery . 36
4.13.5 Final inspections and requirements . 36
4.14 Surge voltage . 36
4.14.1 General . 36
4.14.2 Initial inspection . 36
4.14.3 Test conditions . 37
4.14.4 Recovery . 37
4.14.5 Final inspections and requirements . 37
4.15 Reverse voltage (if required) . 37
4.15.1 Initial inspection . 37
4.15.2 Test conditions . 37
4.15.3 Recovery . 38
4.15.4 Final inspections and requirements . 38
4.16 Pressure relief (if required) . 38
4.17 Storage at high temperature . 38
4.17.1 General . 38
4.17.2 Initial inspection . 38
4.17.3 Test conditions . 38
4.17.4 Recovery . 38
4.17.5 Final inspections and requirements . 38
4.18 Storage at low temperature (if required) . 38
4.18.1 General . 38
4.18.2 Initial inspection . 38
4.18.3 Test conditions . 38
4.18.4 Recovery . 38
4.18.5 Final inspections and requirements . 39
4.19 Characteristics at high and low temperature . 39
4.19.1 General . 39
4.19.2 Inspections and requirements . 39
4.20 Charge and discharge (if required) . 39
4.20.1 General . 39
4.20.2 Initial inspection . 39
4.20.3 Test conditions . 39
4.20.4 Final inspections and requirements . 39
4.21 High surge current (if required) . 40
4.21.1 General . 40
4.21.2 Final inspections and requirements . 40
4.22 Voltage transient overload (if required) . 40
4.22.1 General . 40

4.22.2 Initial inspection . 40
4.22.3 Final inspections and requirements . 40
Bibliography . 41

Table 1 – Preferred values of tolerances . 12
Table 2 – Sampling plan for qualification approval, assessment level EZ . 15
Table 3 – Test schedule for qualification approval (1 of 10) . 16
Table 4 – Lot-by-lot inspection . 27
Table 5 – Periodic inspection . 27
Table 6 – Amplitude and acceleration options . 33
Table 7 – Preferred severities . 34

– 6 – IEC 60384-4:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 4: Sectional specification –
Fixed aluminium electrolytic capacitors
with solid (MnO ) and non-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
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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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 60384-4 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This fifth edition cancels and replaces the fourth edition published in 2007. 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 2:2011 (sixth edition)
to the extent practicable, and harmonization between other similar kinds of documents;
b) In addition, Clause 4 and all the tables have been reviewed in order to prevent
duplications and contradictions.

The text of this standard is based on the following documents:
FDIS Report on voting
40/2467/FDIS 40/2476/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The list of all parts of the IEC 60384 series, under the general title Fixed capacitors for use in
electronic equipment, can be found on the IEC website.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 8 – IEC 60384-4:2016 © IEC 2016
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 4: Sectional specification –
Fixed aluminium electrolytic capacitors
with solid (MnO ) and non-solid electrolyte
1 General
1.1 Scope
This part of IEC 60384 applies to fixed aluminium electrolytic capacitors with solid (MnO ) and
non-solid electrolyte primarily intended for d.c. applications for use in electronic equipment. It
covers capacitors for long-life applications and capacitors for general-purpose applications.
Capacitors for fixed surface mount aluminium electrolytic capacitors are not included but they
are covered by IEC 60384-18.
Capacitors for special-purpose applications may need additional requirements.
1.2 Object
The object of this standard 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. Test
severities and requirements prescribed in detail specifications referring to this sectional
specification shall be of equal or higher performance level, because lower performance levels
are not permitted.
1.3 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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 60068-2-54:2006, Environmental testing – Part 2-54: Tests – Test Ta: Solderability
testing of electronic components by the wetting balance method
IEC 60384-1:2016, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 60417, Graphical symbols for use on equipment
IEC 61193-2:2007, Quality assessment system – Part 2: Selection and use of sampling plans
for inspection of electronic components and packages
ISO 3, Preferred numbers – Series of preferred numbers

1.4 Information to be given in a detail specification
1.4.1 General
Detail specifications shall be derived from the blank detail specification.
Detail specifications shall not specify requirements inferior to those of the generic, sectional
or blank detail specification. When more severe requirements are included, they shall be
listed in 1.9 of the detail specification and indicated in the test schedules, for example, by an
asterisk.
The information given in 1.4.2 may, for convenience, be presented in tabular form.
The following information shall be given in each detail specification and the values quoted
shall preferably be selected from those given in the appropriate clause of this sectional
specification.
1.4.2 Outline drawing and dimensions
There shall be an illustration of the capacitors as an aid to easy recognition and for
comparison of the capacitors with others.
Dimensions and their associated tolerances, which affect interchangeability and mounting,
shall be given in the detail specification. All dimensions shall preferably be stated in
millimetres; however, when the original dimensions are given in inches, the converted metric
dimensions in millimetres shall be added.
The numerical values of the body shall be given as follows:
– general case: width, length and height;
– for cylindrical body: diameter and length.
The numerical values of the terminals shall be given as follows:
– for leaded terminals: diameter, length and spacing;
– for lug terminals: position and spacing;
width, length and thickness of terminal plates;
– for screw terminals: nominal diameter, nominal length, screw-part length,
position and spacing.
When the configuration is other than described above, the detail specification shall state such
dimensional information as will adequately describe the capacitor.
1.4.3 Mounting
The detail specification shall specify the method of mounting to be applied for normal use and
for the application of the vibration and the bump or shock tests. The design of the capacitor
may be such that special mounting fixtures are required in its use. In this case, the detail
specification shall describe the mounting fixtures and they shall be used in the application of
the vibration and bump or shock tests.
1.4.4 Ratings and characteristics
1.4.4.1 General
The ratings and characteristics shall be given in accordance with the relevant clauses of this
specification, including the items as specified below.

– 10 – IEC 60384-4:2016 © IEC 2016
1.4.4.2 Nominal capacitance range
See 2.2.1.
When products approved to the detail specification have different nominal capacitance ranges,
the following statement should be added:
"The nominal capacitance range available in each voltage range is given in the register of
approvals, available for example on the IECQ on-line certificate system website
www.iecq.org”.
1.4.4.3 Particular characteristics
Additional characteristics may be listed when they are considered necessary to specify
adequately the component for design and application purposes.
1.4.4.4 Soldering
The detail specification shall specify the test methods, severities and requirements applicable
for the solderability and the resistance to soldering heat tests.
1.4.5 Marking
The detail specification shall specify the content of the marking on the capacitor and on the
packaging. Any deviations from 1.6, these shall be stated in the detail specification.
1.5 Terms and definitions
For the purposes of this document, the applicable terms and definitions of IEC 60384-1:2016
and the following apply.
1.5.1
capacitance
capacitance of an equivalent circuit having capacitance and
resistance in series measured with alternating current approximately sinusoidal waveform at a
specified frequency
1.5.2
capacitor
capacitor intended for applications where a high degree of stability of
characteristics over a long life is essential
1.5.3
capacitor
capacitor intended for applications where the high performance
level of long-life grade capacitors is not required
1.6 Marking
1.6.1 General
See IEC 60384-1:2016, 2.4, with the following details.
1.6.2 Information for marking
Information given in the marking is normally selected from the following list; the relative
importance of each item is indicated by its position in the list:
a) nominal capacitance;
b) rated voltage (d.c. voltage may be indicated by the symbol: (IEC 60417-5031:2002)
or );
c) category voltage and category temperatures;
d) polarity of the terminations: for multi-section capacitors, the nominal capacitance and
rated voltage of the sections connected to each termination shall be shown in an
unambiguous way. The termination of a capacitor section which is intended for direct
connection to the rectifier (so-called reservoir section) shall be marked with the number 1
or with the colour red;
e) tolerance on nominal capacitance;
f) year and month (or, year and week) of manufacture;
g) manufacturer's name and/or trade mark;
h) manufacturer's type designation;
i) reference to the detail specification.
1.6.3 Marking on capacitors
The capacitor shall be clearly marked with a), b), c), d), e) and f) of 1.6.2 with as many as
possible of the remaining items as is considered necessary.
1.6.4 Marking on packaging
The packaging containing the capacitors should be clearly marked with all the information
listed in 1.6.2 as necessary.
2 Preferred ratings and characteristics
2.1 Preferred characteristics
Preferred climatic categories only shall be given in the preferred characteristics.
The capacitors covered by this specification are classified into climatic categories according
to the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperatures shall be taken from the following:
– lower category temperature: –55 °C, –40 °C, –25 °C and –10 °C;
– upper category temperature: +85 °C, +100 °C, +105 °C and +125 °C.
The severities for the cold and dry heat tests are the lower and upper category temperatures
respectively.
2.2 Preferred values of ratings
2.2.1 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).

– 12 – IEC 60384-4:2016 © IEC 2016
2.2.2 Tolerance on nominal capacitance
Preferred values of tolerances on nominal capacitance are given in Table 1.
Table 1 – Preferred values of tolerances
Tolerances
%
–10 to +10
a
–10 to +20
–10 to +30
–10 to +50
–10 to +75
–10 to +100
–20 to +20
a
For electronic flash only.
2.2.3 Rated voltage (U )
R
Preferred values of rated d.c. voltages taken from the R 10 and R 20 series of ISO 3 are:
– from R 10: 1,0 – 1,25 – 1,6 – 2,0 – 2,5 -3,15 – 4,0 – 5,0 – 6,3 – 8,0;
– from R 20: 3,5 – 4,5;
n
– and their decimal multiples (×10 , n: integer).
2.2.4 Category voltage (U )
C
The category voltage is equal to the rated voltage.
2.2.5 Ripple voltage
An alternating voltage may be applied provided that the peak voltage resulting from the
alternating voltage superimposed on the d.c. voltage does not exceed the value of rated d.c.
voltage. The rated ripple current (see 2.2.8) does not exceed the permissible reverse voltage.
2.2.6 Reverse voltage
The permissible reverse voltage shall be given in the detail specification.
2.2.7 Surge voltage ratio
The surge voltage shall be 1,15 times the rated voltage for rated voltages ≤315 V or
1,10 times the rated voltage for rated voltages >315 V (see 4.14).
2.2.8 Rated ripple current
The rated ripple current at 100 Hz or 120 Hz and at upper category temperature shall be given
in the detail specification. Alternatively, for capacitors for switched mode power supply
application, the rated ripple current shall be stated at the relevant frequency.
NOTE The rated ripple current is determined by the dimensions of the capacitor and several other factors, for
example, the tangent of loss angle and the permissible temperature rise (see 2.2.5).
____________
ISO 3 indicates the value 3,55 for R 20.

3 Quality assessment procedures
3.1 Primary stage of manufacture
For capacitors with solid electrolyte, the primary stage of manufacture is the formation of the
anode body.
For capacitors with non-solid electrolyte, the primary stage of manufacture is the capacitor
manufacturer's evaluation of the formed anode foil.
3.2 Structurally similar components
Capacitors, considered as being structurally similar, are capacitors produced with similar
processes and materials, though they may be of different case sizes and values.
3.3 Certified test records of released lots
The information required in IEC 60384-1:2016, Q.1.5, shall be made available when
prescribed in the detail specification and when requested by a purchaser. After the endurance
test, the required parameters are the capacitance change, tangent of loss angle and leakage
current.
3.4 Qualification approval (QA) procedures
3.4.1 General
The procedures for qualification approval testing are given in IEC 60384-1:2016, Clause Q.2.
The schedule to be used for qualification approval testing on the basis of lot-by-lot and
periodic tests is given in 3.5. The procedure using a fixed sample size schedule is given in
3.4.2 and 3.4.3.
3.4.2 Qualification approval on the basis of the fixed sample size procedure
The fixed sample size procedure is described in IEC 60384-1:2016, Q.2.4. The sample shall
be representative of the range of capacitors for which approval is sought. The sample may be
the whole or the part of the range given in the detail specification.
The sample shall consist of four specimens having the maximum and minimum voltages and,
for these voltages, the maximum and minimum case size. When the range of rated voltages
exceeds 200 V, an intermediate voltage shall also be tested. In each of these case
size/voltage combinations (values), the maximum capacitance shall be chosen. Thus, for the
approval of a range, testing is required of either four or six values. When the range consists of
less than four values, the number of specimens to be tested shall be that required for four
values.
Two (for 6 values) or three (for 4 values) per value may be used as replacements for
specimens, which are non-conforming because of incidents not attributable to the
manufacturer.
The numbers given in Group 0 assume that all groups are applicable. If this is not so, the
numbers may be reduced accordingly.
When additional groups are introduced into the qualification approval test schedule, the
number of specimens required for Group 0 shall be increased by the same number as that
required for the additional groups.
Table 2 gives the number of samples to be tested in each group or subgroup together with the
permissible number of non-conforming items for qualification approval tests.

– 14 – IEC 60384-4:2016 © IEC 2016
3.4.3 Tests
The complete series of tests specified in Table 2 and Table 3 are required for the approval of
capacitors covered by a detail specification. The tests of each group shall be carried out in
the order given.
The whole sample shall be subjected to the tests of Group 0 and then divided for the other
gr
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