EN 60384-22:2012

SLOVENSKI STANDARD
01-junij-2012
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Fixed capacitors for use in electronic equipment - Part 22: Sectional specification - Fixed
surface mount multilayer capacitors of ceramic dielectric, Class 2
Festkondensatoren zur Verwendung in Geräten der Elektronik - Teil 22:
Rahmenspezifikation - Oberflächenmontierbare Vielschichtkeramik-Festkondensatoren,
Klasse 2
Condensateurs fixes utilisés dans les équipements électroniques - Partie 22:
Spécification intermédiaire - Condensateurs multicouches fixes à diélectriques en
céramique pour montage en surface, de Classe 2
Ta slovenski standard je istoveten z: EN 60384-22:2012
ICS:
31.060.10 Fiksni kondenzatorji Fixed capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60384-22
NORME EUROPÉENNE
March 2012
EUROPÄISCHE NORM
ICS 31.060.10 Supersedes EN 60384-22:2004

English version
Fixed capacitors for use in electronic equipment -
Part 22: Sectional specification -
Fixed surface mount multilayer capacitors of ceramic dielectric, Class 2
(IEC 60384-22:2011)
Condensateurs fixes utilisés dans les Festkondensatoren zur Verwendung in
équipements électroniques - Geräten der Elektronik -
Partie 22: Spécification intermédiaire - Teil 22: Rahmenspezifikation -
Condensateurs multicouches fixes à Oberflächenmontierbare
diélectriques en céramique pour montage Vielschichtkeramik-Festkondensatoren,
en surface, de Classe 2 Klasse 2
(CEI 60384-22:2011) (IEC 60384-22:2011)

This European Standard was approved by CENELEC on 2012-01-13. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60384-22:2012 E
Foreword
The text of document 40/2128/FDIS, future edition 2 of IEC 60384-22, 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 60384-22:2012.

The following dates are fixed:
(dop) 2012-10-13
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-01-13
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60384-22:2004.
EN 60384-22:2004:
— The measuring frequency of 1 MHz has been reduced to 1 kHz for 100 pF, see 4.5.1 Capacitance.
— The test voltage of 1,2 U at U ≥ 1 000 V has been added in 4.5.4 Voltage proof.
R R
— Detail test conditions have been added in 4.7 Shear test and 4.8 Substrate bending test.
— Test conditions applying lead free solder alloy (Sn-Ag-Cu) have been included in 4.9 Resistance to
soldering heat and 4.10 Solderability.
— A selection of the test conditions according to marketing needs has been stated in 4.13 Damp heat,
steady state.
— The dimensions of 0402 M in Annex A have been added.
— The temperature characteristics code of capacitance for the reference temperature of 25 °C has
been added, see Annex C.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 60384-22:2011 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 60384-14 NOTE  Harmonized as EN 60384-14.
IEC 60384-22-1 NOTE  Harmonized as EN 60384-22-1.

- 3 - EN 60384-22:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60063 1963 Preferred number series for resistors and - -
+ A1 1967 capacitors
+ A2 1977
IEC 60068-1 1988 Environmental testing - EN 60068-1 1994
+ corr. October 1988 Part 1: General and guidance
+ A1 1992
IEC 60068-2-58 2004 Environmental testing - EN 60068-2-58 2004
Part 2-58: Tests - Test Td: Test methods for + corr. December 2004
solderability, resistance to dissolution of
metallization and to soldering heat of surface
mounting devices (SMD)
IEC 60384-1 2008 Fixed capacitors for use in electronic EN 60384-1 2009
+ corr. November 2008 equipment -
Part 1: Generic specification
IEC 61193-2 2007 Quality assessment systems - EN 61193-2 2007
Part 2: Selection and use of sampling plans
for inspection of electronic components and
packages
ISO 3 1973 Preferred numbers - Series of preferred - -
numbers
IEC 60384-22 ®
Edition 2.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –
Part 22: Sectional specification – Fixed surface mount multilayer capacitors of
ceramic dielectric, Class 2
Condensateurs fixes utilisés dans les équipements électroniques –
Partie 22: Spécification intermédiaire – Condensateurs multicouches fixes à
diélectriques en céramique pour montage en surface, de Classe 2

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 31.060.10 ISBN 978-2-88912-821-1

– 2 – 60384-22 © IEC:2011
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 . 8
1.4.1 Outline drawing and dimensions . 9
1.4.2 Mounting . 9
1.4.3 Rating and characteristics . 9
1.4.4 Marking . 10
1.5 Terms and definitions . 10
1.6 Marking . 10
1.6.1 Information for marking . 11
1.6.2 Marking on the body . 11
1.6.3 Requirements for marking . 11
1.6.4 Marking of the packaging . 11
1.6.5 Additional marking . 11
2 Preferred rating and characteristics . 11
2.1 Preferred characteristics . 11
2.1.1 Preferred climatic categories . 11
2.2 Preferred values of ratings . 12
2.2.1 Rated temperature (T ) . 12
R
2.2.2 Rated voltage (U ) . 12
R
2.2.3 Category voltage (U ) . 12
C
2.2.4 Preferred values of nominal capacitance and associated tolerance
values . 12
2.2.5 Temperature characteristic of capacitance . 13
2.2.6 Dimensions . 14
3 Quality assessment procedures . 14
3.1 Primary stage of manufacture . 14
3.2 Structurally similar components . 14
3.3 Certified records of released lots . 14
3.4 Qualification approval . 14
3.4.1 Qualification approval on the basis of the fixed sample size
procedures . 14
3.4.2 Tests . 15
3.5 Quality conformance inspection . 20
3.5.1 Formation of inspection lots . 20
3.5.2 Test schedule . 20
3.5.3 Delayed delivery . 20
3.5.4 Assessment levels . 20
4 Test and measurement procedures . 22
4.1 Special preconditioning . 22
4.2 Measuring conditions . 22
4.3 Mounting . 22
4.4 Visual examination and check of dimensions . 22
4.4.1 Visual examination . 22

60384-22 © IEC:2011 – 3 –
4.4.2 Requirements . 22
4.5 Electrical tests . 24
4.5.1 Capacitance . 24
4.5.2 Tangent of loss angle (tan δ) . 25
4.5.3 Insulation resistance . 25
4.5.4 Voltage proof . 26
4.5.5 Impedance (if required by the detail specification) . 27
4.5.6 Equivalent series resistance [ESR] (if required by the detail
specification) . 27
4.6 Temperature characteristic of capacitance . 27
4.6.1 Special preconditioning . 27
4.6.2 Measuring conditions . 27
4.6.3 Requirements . 28
4.7 Shear test . 28
4.8 Substrate bending test . 28
4.8.1 Initial measurement . 28
4.8.2 Final inspection . 28
4.9 Resistance to soldering heat . 29
4.9.1 Special preconditioning . 29
4.9.2 Initial measurement . 29
4.9.3 Test conditions . 29
4.9.4 Recovery . 30
4.9.5 Final inspection, measurements and requirements . 30
4.10 Solderability . 31
4.10.1 Test conditions . 31
4.10.2 Recovery . 32
4.10.3 Final inspection, measurements and requirements . 32
4.11 Rapid change of temperature . 32
4.11.1 Special preconditioning . 32
4.11.2 Initial measurement . 32
4.11.3 Number of cycles . 32
4.11.4 Recovery . 32
4.11.5 Final inspection, measurements and requirements . 32
4.12 Climatic sequence . 33
4.12.1 Special preconditioning . 33
4.12.2 Initial measurement . 33
4.12.3 Dry heat . 33
4.12.4 Damp heat, cyclic, Test Db, first cycle . 33
4.12.5 Cold . 33
4.12.6 Damp heat, cyclic, Test Db, remaining cycles . 33
4.12.7 Final inspection, measurements and requirements . 34
4.13 Damp heat, steady state . 34
4.13.1 Special preconditioning . 34
4.13.2 Initial measurement . 34
4.13.3 Conditions of test . 34
4.13.4 Recovery . 35
4.13.5 Final inspection, measurements and requirements . 35
4.14 Endurance . 35
4.14.1 Special preconditioning . 35

– 4 – 60384-22 © IEC:2011
4.14.2 Initial measurement . 36
4.14.3 Conditions of test . 36
4.14.4 Recovery . 36
4.14.5 Final inspection, measurements and requirements . 36
4.15 Robustness of terminations (only for capacitors with strip termination) . 37
4.15.1 Test conditions . 37
4.15.2 Final inspection and requirements . 37
4.16 Component solvent resistance (if required) . 37
4.17 Solvent resistance of the marking (if required) . 37
4.18 Accelerated damp heat, steady state (if required) . 37
4.18.1 Initial measurement . 37
4.18.2 Conditioning . 38
4.18.3 Recovery . 38
4.18.4 Final measurements . 38
Annex A (normative) Guidance for the specification and coding of dimensions of fixed
surface mount multilayer capacitors of ceramic dielectric, Class 2 . 39
Annex B (informative) Capacitance ageing of fixed capacitors of ceramic dielectric,
Class 2 . 40
Annex C (informative) Temperature characteristics of capacitance for the reference
temperature of 25 °C . 42
Bibliography . 43

Figure 1 – Fault: crack or fissure . 23
Figure 2 – Fault: crack or fissure . 23
Figure 3 – Separation or delamination . 23
Figure 4 – Exposed electrodes . 23
Figure 5 – Principal faces . 24
Figure 6 – Reflow temperature profile . 30
Figure A.1 – Dimensions . 39

Table 1 – Preferred values of category voltages . 12
Table 2 – Preferred tolerances . 13
Table 3 – Temperature characteristic of capacitance . 13
Table 4 – Fixed sample size test plan for qualification approval, assessment level EZ . 16
Table 5 – Tests schedule for qualification approval . 17
Table 6a – Lot-by-lot inspection . 21
Table 6b – Periodic test . 21
Table 7 – Measuring conditions . 24
Table 8 – Tangent of loss angle limits . 25
Table 9 – Test voltages. 26
Table 10 – Details of measuring conditions . 27
Table 11 – Reflow temperature profiles for Sn-Ag-Cu alloy . 30
Table 12 – Maximum capacitance change . 31
Table 13 – Maximum capacitance change . 33
Table 14 – Number of damp heat cycles . 33
Table 15 – Final inspection, measurements and requirements . 34

60384-22 © IEC:2011 – 5 –
Table 16 – Test conditions for damp heat, steady state . 35
Table 17 – Final inspection, measurements and requirements . 35
Table 18 – Endurance test conditions (U = U ) . 36
C R
Table 19 – Endurance test conditions (U ≠ U ) . 36
C R
Table 20 – Final inspection, measurements and requirements of endurance test . 37
Table 21 – Initial requirements . 38
Table 22 – Conditioning . 38
Table A.1 – Dimensions . 39
Table C.1 – Temperature characteristics of capacitance for the reference temperature
of 25 °C . 42
Table C.2 – Measuring conditions of temperature characteristic of capacitance for the
reference temperature of 25 °C . 42

– 6 – 60384-22 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 22: Sectional specification – Fixed surface mount
multilayer capacitors of ceramic dielectric, Class 2

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-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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 60384-22 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This second edition cancels and replaces the first edition published in 2004 and contains the
following significant technical changes with respect to the previous edition.
• The measuring frequency of 1 MHz has been reduced to 1 kHz for 100 pF, see 4.5.1
Capacitance.
• The test voltage of 1,2 U at U ≥ 1 000 V has been added in 4.5.4 Voltage proof.
R R
• Detail test conditions have been added in 4.7 Shear test and 4.8 Substrate bending test.
• Test conditions applying lead free solder alloy (Sn-Ag-Cu) have been included in 4.9
Resistance to soldering heat and 4.10 Solderability.
• A selection of the test conditions according to marketing needs has been stated in 4.13
Damp heat, steady state.
60384-22 © IEC:2011 – 7 –
• The dimensions of 0402 M in Annex A have been added.
• The temperature characteristics code of capacitance for the reference temperature of
25 °C has been added, see Annex C.
The text of this standard is based on the following documents:
FDIS Report on voting
40/2128/FDIS 40/2141/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 web site.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site 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 – 60384-22 © IEC:2011
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 22: Sectional specification – Fixed surface mount
multilayer capacitors of ceramic dielectric, Class 2

1 General
1.1 Scope
This part of IEC 60384 is applicable to fixed unencapsulated surface mount multilayer
capacitors of ceramic dielectric, Class 2, for use in electronic equipment. These capacitors
have metallized connecting pads or soldering strips and are intended to be mounted on
printed boards, or directly onto substrates for hybrid circuits.
Capacitors for electromagnetic interference suppression are not included, but are covered by
IEC 60384-14.
1.2 Object
The object of this standard is to prescribe preferred ratings and characteristics and to select
from IEC 60384-1 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 should be of equal or higher performance level, 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 60063:1963, Preferred number series for resistors and capacitors
Amendment 1 (1967)
Amendment 2 (1977)
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60068-2-58:2004, Environmental testing – Part 2-58: Tests – Test Td – Test methods
for solderability, resistance to dissolution of metallization and to soldering heat of surface
mounting devices (SMD)
IEC 60384-1:2008, 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
ISO 3:1973, Preferred numbers – Series of preferred numbers
1.4 Information to be given in a detail specification
Detail specifications shall be derived from the relevant blank detail specification.

60384-22 © IEC:2011 – 9 –
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.
NOTE The information given in 1.4.1 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.
1.4.1 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.
Normally the numerical values shall be given for the length, width and height of the body.
When necessary, for example when a number of items (sizes and capacitance/voltage ranges)
are covered by a detail specification, the dimensions and their associated tolerances shall be
placed in a table below the drawing.
When the configuration is other than described above, the detail specification shall state such
dimensional information as will adequately describe the capacitors.
1.4.2 Mounting
The detail specification shall give guidance on methods of mounting for normal use. Mounting
for test and measurement purposes (when required) shall be in accordance with 4.3 of this
sectional specification.
1.4.3 Rating and characteristics
The ratings and characteristics shall be in accordance with the relevant clauses of this
specification, together with the following.
1.4.3.1 Nominal capacitance range
See 2.2.4.1.
NOTE When products approved to the detail specification have different ranges, the following statement should
be added: “The range of capacitance values available in each voltage range is given in the register of approvals,
available for example on the website www.iecq.org”.
1.4.3.2 Particular characteristics
Additional characteristics may be listed, when they are considered necessary to specify
adequately the component for design and application purposes.
1.4.3.3 Soldering
The detail specification shall prescribe the test methods, severities and requirements
applicable for the solderability and the resistance to soldering heat tests.

– 10 – 60384-22 © IEC:2011
1.4.4 Marking
The detail specification shall specify the content of the marking on the capacitor and on the
package. Deviations from 1.6 of this sectional specification shall be specifically stated.
1.5 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60384-1, as well as
the following apply.
1.5.1
surface mount capacitor
capacitor whose small dimensions and nature or shape of terminations make it suitable for
surface mounting in hybrid circuits and on printed boards
1.5.2
fixed capacitors, ceramic dielectric, Class 2
capacitor which has a dielectric with a high permittivity and is suitable for by-pass and
coupling applications or for frequency discriminating circuits where low losses and high
stability of capacitance are not of major importance
NOTE The ceramic dielectric is characterized by a non linear change of capacitance over the category
temperature range (see Table 3).
1.5.3
subclass
maximum percentage change of capacitance within the category temperature range with
respect to the capacitance at 20 °C
NOTE The subclass may be expressed in code form (see Table 3).
1.5.4
category temperature range
range of ambient temperatures for which the capacitor has been designed to operate
continuously; this is given by the lower and upper category temperature
1.5.5
rated temperature
T
R
maximum ambient temperature at which the rated voltage may be continuously applied
1.5.6
rated d.c. voltage
U
R
maximum d.c. voltage which may be applied continuously to a capacitor at any temperature
between the lower category temperature and the rated temperature
NOTE Maximum d.c. voltage is the sum of the d.c. voltage and peak a.c. voltage or peak pulse voltage applied to
the capacitor.
1.5.7
category voltage
U
C
maximum voltage which may be applied continuously to a capacitor at its upper category
temperature
1.6 Marking
See IEC 60384-1, 2.4, with the following details.

60384-22 © IEC:2011 – 11 –
1.6.1 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:
– nominal capacitance;
– rated voltage (d.c. voltage may be indicated by the symbol (     or     );
– tolerance on nominal capacitance;
– dielectric subclass as applicable (according to 2.2.5);
– year and month (or week) of manufacture;
– manufacturer’s name or trade mark;
– climatic category;
– manufacturer’s type designation;
– reference to the detail specification.
1.6.2 Marking on the body
These capacitors are generally not marked on the body. If some marking can be applied, they
shall be clearly marked with as many as possible of the above items as is considered useful.
Any duplication of information in the marking on the capacitor should be avoided.
1.6.3 Requirements for marking
Any marking shall be legible and not easily smeared or removed by rubbing with the finger.
1.6.4 Marking of the packaging
The packaging containing the capacitor(s) shall be clearly marked with all the information
listed in 1.6.1.
1.6.5 Additional marking
Any additional marking shall be so applied that no confusion can arise.
2 Preferred rating and characteristics
2.1 Preferred characteristics
The values given in the detail specification shall preferably be selected from the following.
2.1.1 Preferred climatic categories
The capacitors covered by this sectional specification are classified into climatic categories
according to the general rules given in IEC 60068-1.
The lower and upper category temperatures and the duration of the damp heat, steady state
test shall be chosen from the following:
– lower category temperature: −55 °C, −40 °C, −25 °C, .10 °C and +10 °C;
– upper category temperature: +70 °C, +85 °C, +100 °C, +125 °C and +150 °C;
– duration of the damp heat, steady state test (40 °C, 93 % RH): 4, 10, 21 and 56 days.

– 12 – 60384-22 © IEC:2011
The severities for the cold and dry heat tests are the lower and upper category temperatures
respectively.
NOTE The resistance to humidity resulting from the above climatic category is for the capacitors in their
unmounted state. The climatic performance of the capacitors after mounting is greatly influenced by the mounting
substrate, the mounting method (see 4.3) and the final coating.
2.2 Preferred values of ratings
2.2.1 Rated temperature (T )
R
The rated temperature is equal to the upper category temperature for capacitors with the
upper category temperature not exceeding 125 °C, unless otherwise stated in the detail
specification.
2.2.2 Rated voltage (U )
R
The preferred values of the rated voltage are the values of the R5 series of ISO 3. If other
values are needed they shall be chosen from the R10 series.
The sum of the d.c. voltage and the peak a.c. voltage or the peak to peak a.c. voltage,
whichever is the greater, applied to the capacitor shall not exceed the rated voltage. The
value of the peak a.c. voltage shall not exceed the value determined by the permissible
reactive power.
)
2.2.3 Category voltage (U
C
The category voltage is equal to the rated voltage for capacitors with the upper category
temperature not exceeding 125 °C. Any category voltages which are different from the rated
voltage, for capacitors with the upper category temperature exceeding 125 °C or for high
voltage capacitors with rated voltages above 500 V, shall be given by the detail specification.
The preferred values of the category voltage at 125 °C upper category temperature for high
volumetric capacitors with a rated voltage of 16 V and less and a rated temperature of 85 °C
are given in Table 1.
Table 1 – Preferred values of category voltages
UR    V 2,5 4 6,3 10 16
U   V 1,6 2,5 4 6,3 10
C
NOTE The numeric values of U are calculated by the following:
C
U = 0,63 × U .
C R
2.2.4 Preferred values of nominal capacitance and associated tolerance values
2.2.4.1 Preferred values of nominal capacitance
Nominal capacitance values shall be taken from the series of IEC 60063; the E3, E6 and E12
series are preferred.
2.2.4.2 Preferred tolerances on nominal capacitance
See Table 2.
60384-22 © IEC:2011 – 13 –
Table 2 – Preferred tolerances
Preferred series Tolerance Letter code
%
E3 and E6 −20/+80 Z
−20/+50 S
E6 ±20 M
E6 and E12 K
±10
2.2.5 Temperature characteristic of capacitance
Table 3 denotes with a cross the preferred values of the temperature characteristic with and
without a d.c. voltage applied. The method of coding the subclass is also given; for example a
dielectric with a percentage change of ± 20 % without d.c. voltage applied over the
temperature range from –55 °C to +125 °C will be defined as a dielectric of subclass 2C1.
The temperature range for which the temperature characteristic of the dielectric is defined is
the same as the category temperature range.
Table 3 – Temperature characteristic of capacitance
Maximum capacitance change within the Category temperature range and
category temperature range with respect to corresponding number code
Sub- the capacitance at 20 °C measured with
−55/+150 −55/+125 −55/+85 −40/+85 −25/+85 +10/+85
and without a d.c. voltage applied
class
letter
% °C °C °C °C °C °C
code
without d.c. with d.c. voltage applied
0 1 2 3 4 6
voltage applied (NOTE 1)
2B ± 10  × × ×
2C ± 20 × × ×
2D +20/−30 ×  ×
Requirements specified in
the detail specification
2E +22/−56  × × × ×
2F +30/−80  × × × ×
2R
± 15 × × × ×
NOTE 1 d.c. voltage applied is either rated voltage or the voltage specified in the detail specification.
NOTE 2 "×" indicates preferred.
NOTE 3 W
...