IEC 60384-9:2005

INTERNATIONAL IEC
STANDARD 60384-9
QC 300700
Third edition
2005-05
Fixed capacitors for use in electronic equipment –
Part 9:
Sectional specification:
Fixed capacitors of ceramic dielectric,
Class 2
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD 60384-9
QC 300700
Third edition
2005-05
Fixed capacitors for use in electronic equipment –
Part 9:
Sectional specification:
Fixed capacitors of ceramic dielectric,
Class 2
 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
U
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60384-9  IEC:2005(E)
CONTENTS
1 General .6
1.1 Scope.6
1.2 Object .6
1.3 Normative references .6
1.4 Information to be given in a detail specification .6
1.4.1 Outline drawing and dimensions .7
1.4.2 Mounting .7
1.4.3 Ratings and characteristics.7
1.4.4 Marking .7
1.5 Terms and definitions .8
1.6 Marking .8
2 Preferred ratings and characteristics .9
2.1 Preferred characteristics .9
2.2 Preferred values of ratings .9
3 Quality assessment procedures.10
3.1 Primary stage of manufacture.10
3.2 Structurally similar components.10
3.3 Certified records of released lots.10
3.4 Qualification Approval .11
3.5 Quality Conformance Inspection.16
4 Test and measurement procedures.18
4.1 Special preconditioning .18
4.2 Visual examination and check of dimensions.18
4.3 Electrical tests.18
4.4 Temperature characteristic of capacitance .20
4.5 Robustness of terminations .21
4.6 Resistance to soldering heat .21
4.7 Solderability .22
4.8 Rapid change of temperature .22
4.9 Vibration.22
4.10 Bump .23
4.11 Shock.23
4.12 Climatic sequence .24
4.13 Damp heat, steady state.26
4.14 Endurance.26
4.15 Component solvent resistance (if applicable).27
4.16 Solvent resistance of the marking (if applicable).27

Annex A (normative) Capacitance ageing of fixed capacitors of ceramic dielectric,
Class 2 .28

60384-9  IEC:2005(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 9: Sectional specification:
Fixed 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 60384-9 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 1988 and amendment 1
(2000). This third edition is a result of maintenance activities related to the previous edition.
All changes that have been agreed upon can be categorized as minor revisions.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1530/FDIS 40/1550/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.

– 4 – 60384-9  IEC:2005(E)
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 60384 consists of the following parts, under the general title Fixed capacitors for use in
electronic equipment:
Part 1: Generic specification
Part 2: Sectional specification: Fixed metallized polyethylene-terephthalate film dielectric
d.c. capacitors
Part 3: Sectional specification: Fixed tantalum chip capacitors
Part 4: Sectional specification: Aluminium electrolytic capacitors with solid and non-solid
electrolyte
Part 5: Sectional specification: Fixed mica dielectric d.c. capacitors with a rated voltage not
exceeding 3000 V – Selection of methods of test and general requirements
Part 6: Sectional specification: Fixed metallized polycarbonate film dielectric d.c.
capacitors
Part 7: Sectional specification: Fixed polystyrene film dielectric metal foil d.c. capacitors
Part 8: Sectional specification: Fixed capacitors of ceramic dielectric, Class 1
Part 9: Sectional specification: Fixed capacitors of ceramic dielectric, Class 2
Part 11: Sectional specification: Fixed polyethylene-terephthalate film dielectric metal foil
d.c. capacitors
Part 12: Sectional specification: Fixed polycarbonate film dielectric metal foil d.c. capacitors
Part 13: Sectional specification: Fixed polypropylene film dielectric metal foil d.c. capacitors
Part 14: Sectional specification: Fixed capacitors for electromagnetic interference
suppression and connection to the supply mains
Part 15: Sectional specification: Fixed tantalum capacitors with non-solid or solid electrolyte
Part 16: Sectional specification: Fixed metallized polypropylene film dielectric d.c.
capacitors
Part 17: Sectional specification: Fixed metallized polypropylene film dielectric a.c. and pulse
capacitors
Part 18: Sectional specification: Fixed aluminium electrolytic chip capacitors with solid and
non-solid electrolyte
Part 19: Sectional specification: Fixed metallized polyethylene-terephthalate film dielectric
chip d.c. capacitors
Part 20: Sectional specification: Fixed metallized polyphenylene sulfide film dielectric chip
d.c. capacitors
Part 21: Sectional specification: Fixed surface mount multilayer capacitors of ceramic
dielectric, Class 1
Part 22: Sectional specification: Fixed surface mount multilayer capacitors of ceramic
dielectric, Class 2
Part 23: Sectional specification: Fixed surface mount metallized polyethylene naphthalate
film dielectric d.c. capacitors
Part 24: Sectional specification – Surface mount fixed tantalum electrolytic capacitors with
conductive polymer solid electrolyte①
Part 25: Sectional specification – Surface mount fixed aluminium electrolytic capacitors with
conductive polymer solid electrolyte①

———————
To be published.
60384-9  IEC:2005(E) – 5 –
The QC number that appears on the front cover of this publication is the specification number
in the IECQ Quality Assessment System for Electronic Components.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
A bilingual version of this publication may be issued at a later date.

– 6 – 60384-9  IEC:2005(E)
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 9: Sectional specification:
Fixed capacitors of ceramic dielectric, Class 2

1 General
1.1 Scope
This part of IEC 60384 is applicable to fixed capacitors of ceramic dielectric with a defined
temperature coefficient (dielectric Class 2), intended for use in electronic equipment, including
leadless capacitors but excluding fixed surface mount multilayer capacitors of ceramic
dielectric.
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 60384-1:1999, 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 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.
IEC 60063:1963, Preferred number series for resistors and capacitors
Amendment No. 1 (1967)
Amendment No. 2 (1977)
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60384-1:1999, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification.
IEC 60410:1973, Sampling plans and procedures for inspection by attributes
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.
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.
———————
Which are covered by IEC 60384-22 (Class 2).

60384-9  IEC:2005(E) – 7 –
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 capacitor as an aid to easy recognition and for comparison
of the capacitor 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 of the body, the width and height
of the body and the wire spacing, or for cylindrical types, the body diameter, and the length
and diameter of the terminations. When necessary, for example when a number of items
(capacitance values/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. When the capacitor is not
designed for use on printed boards, this shall be clearly stated in the detail specification.
1.4.2 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 capacitors shall be
mounted by their normal means. 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.
1.4.3 Ratings 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 Rated 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 values available in each voltage range is given in IEC QC 001005".
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.
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.

– 8 – 60384-9  IEC:2005(E)
1.5 Terms and definitions
For the purposes of this document, the applicable terms and definitions of IEC 60384-1 and
the following apply.
1.5.1
fixed capacitors of 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. The ceramic dielectric is characterized by
the non-linear change of capacitance over the category temperature range (see Table 2)
1.5.2
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 2).
1.5.3
rated voltage (U )
R
maximum d.c. voltage which may be applied continuously to the terminations of a capacitor at
the rated temperature
NOTE The sum of the d.c. voltage and the peak a.c. voltage applied to the capacitor should not exceed the rated
voltage. The value of the peak alternating voltage should not exceed the value determined by the permissible
reactive power.
1.6 Marking
See IEC 60384-1, 2.4 with the following details:
1.6.1 The 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) rated capacitance;
b) rated voltage (d.c. voltage may be indicated by the symbol      or      );
c) tolerance on rated capacitance;
d) the dielectric subclass, see Table 2;
e) year and month (or week) of manufacture;
f) manufacturer's name or trade mark;
g) climatic category;
h) manufacturer's type designation;
i) reference to the detail specification.
NOTE Information required under 1.6.1 b) and 1.6.1 d) may be given in code form under manufacturer’s, or
national, type or style designation.
1.6.1 The capacitor shall be clearly marked with a), b) and c) above and with as many as
possible of the remaining items as is considered necessary. Any duplication of information in
the marking on the capacitor should be avoided
1.6.2 The package containing the capacitor(s) shall be clearly marked with all the
information listed in 1.6.1.
1.6.3 Any additional marking shall be so applied that no confusion can arise.

60384-9  IEC:2005(E) – 9 –
2 Preferred ratings and characteristics
2.1 Preferred characteristics
The values given in detail specifications shall preferably be selected from the following:
2.1.1 Preferred climatic categories
The capacitors covered by this 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 and –10 °C
Upper category temperature: +70 °C, +85 °C, +100 °C and +125 °C
Duration of the damp heat, steady state test: 4, 10, 21 and 56 days
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 Rated temperature
For capacitors covered by this specification, the rated temperature is equal to the upper
category temperature.
2.2.2 Rated voltage (U )
R
The preferred values of rated voltage are: 25 – 40 – 63 – 100 – 160 – 250 – 400 – 630 – 1000
– 1 600 – 2 500 and 4 000 V. These values conform to the basic series of preferred values R5
given in ISO 3. If other values are needed they shall be chosen from the R10 series.
2.2.3 Category voltage (U )
C
Since the rated temperature is defined as the upper category temperature, the category
voltage is equal to the rated voltage, as defined in IEC 60384-1, 2.2.17.
2.2.4 Preferred values of rated capacitance and associated tolerance values
2.2.4.1 Preferred values of rated capacitance
Rated 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 rated capacitance
Table 1 – Preferred tolerance on rated capacitance
Preferred series Tolerances Letter code
%
E3 and E6 –20/+80 Z
–20/+50 S
E6 ±20 M
E6 and E12 ±10 K
– 10 – 60384-9  IEC:2005(E)
2.2.5 Temperature characteristic of capacitance
Table 2 denotes with a cross the preferred values of temperature characteristics with and
without 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 Class 2C1.
Table 2 – Preferred values of temperature characteristics
Sub- Maximum capacitance change Category temperature range and
class in per cent within the
corresponding number code
letter category temperature range
code with respect to the
capacitance at 20 °C
-55/+125 °C -55/+85 °C -40/+85 °C -25/+85 °C -10/+85 °C
measured with and without a
d.c. voltage applied
a
Without With d.c.
d.c. voltage voltage 1 2 3 4 6
applied applied
2B ±10 - x x x -
2C ±20 x x x - -
2D +20/–30 As specified in - - - x -
the detail
2E +22/–56 - x x x x
specification
2F +30/–80 - x x x x
2R ±15 x - - - -
2X ±15 +15/–25 x - - - -
a The applied voltage is the rated d.c. voltage or as specified in the detail specification.

The temperature range for which the temperature characteristics of the dielectric is defined is
the same as the category temperature range.
3 Quality assessment procedures
3.1 Primary stage of manufacture
For single layer capacitors, the primary stage of manufacture is the metallizing of the
dielectric to form the electrode; for multilayer capacitors it is the first common firing of the
dielectric-electrode assembly.
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 records of released lots
The information required in IEC 60384-1, 3.9 shall be made available when prescribed in the
detail specification and when requested by a purchaser. After the endurance test, the
parameters for which variables information is required are the capacitance change, tan δ and
the insulation resistance.
60384-9  IEC:2005(E) – 11 –
3.4 Qualification approval
The procedures for qualification approval testing are given in IEC 60384-1, 3.5.
The schedule to be used for qualification approval testing on the basis of lot-by-lot and
periodic tests is given in 3.5 of this specification. The procedure using a fixed sample size
schedule is given in 3.4.1 and 3.4.2 below.
3.4.1 Qualification approval on the basis of the fixed sample size procedure
The fixed sample size procedure is described in IEC 60384-1, 3.5.3 b). The sample shall be
representative of the range of capacitors for which approval is sought. This may or may not be
the complete range covered by the detail specification.
The samples shall consist of specimens having the lowest and highest voltages, and for these
voltages the lowest and highest capacitance values. When there are more than four rated
voltages an intermediate voltage shall also be tested. Thus, for the approval of a range,
testing is required of either four or six values (capacitance/voltage combinations). When the
range consists of less than four values, the number of specimens to be tested shall be that
required for four values.
Spare specimens are permitted as follows:
Two (for six values) or three (for four values) per value which 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 3 gives the number of samples to be tested in each group or subgroup together with the
number of permissible non-conformances for qualification approval tests.
3.4.2 Tests
The complete series of tests specified in Table 3 and Table 4 are required for the approval of
capacitors covered by one 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
groups.
Non-conforming specimens found during the tests of Group 0 shall not be used for the other
groups.
“One non-conforming item” is counted when a capacitor has not satisfied the whole or a part
of the tests of a group.
The approval is granted when the number of non-conforming items does not exceed the
specified number of permissible non-conforming items for each group or subgroup and the
total number of permissible non-conforming items.

– 12 – 60384-9  IEC:2005(E)
NOTE Tables 3 and 4 together form the fixed sample size test schedule for which Table 3 includes the details for
the sampling and permissible non-conforming item for the different tests or groups of test, whereas Table 4
together with the details of test contained in Clause 4 gives a complete summary of test conditions and
performance requirements and indicates where, for example for the test method or conditions of test, a choice has
to be made in the detail specification.
The conditions of test and performance requirements for the fixed sample size test schedule
shall be identical to those prescribed in the detail specification for quality conformance
inspection.
Table 3 – Sampling plan together with numbers of permissible non-conforming items for
qualification approval tests, assessment level EZ
Group Test Subclause of this Number of Permissible
publication specimens number of
No.
non-conforming
items
b
n
c
0 Visual examination 4.2
Dimensions 4.2
Capacitance 4.3.1
Tangent of loss angle 4.3.2 108 0
Insulation resistance 4.3.3
Voltage proof 4.3.4
Spare specimens 8
...