EN 60384-14:2013
(Main)Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains
Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains
IEC 60384-14:2013 applies to capacitors and resistor-capacitor combinations which will be connected to an a.c. mains or other supply with nominal voltage not exceeding 1 000 V a.c. (r.m.s.) or 1 000 V d.c. and with a nominal frequency not exceeding 100 Hz. This fourth edition cancels and replaces the third edition published in 2005. It constitutes a technical revision. All changes that have been agreed upon can be categorized as minor revisions.
Festkondensatoren zur Verwendung in Geräten der Elektronik - Teil 14: Rahmenspezifikation - Festkondensatoren zur Unterdrückung elektromagnetischer Störungen, geeignet für Netzbetrieb
Condensateurs fixes utilisés dans les équipements électroniques - Partie 14: Spécification intermédiaire - Condensateurs fixes d'antiparasitage et raccordement à l'alimentation
La CEI 60384-14:2013 s'applique aux condensateurs et aux combinaisons condensateur/résistance qui sont connectés à un réseau d'alimentation en courant alternatif ou à une autre alimentation dont la tension nominale ne dépasse pas 1 000 V c.a. (efficace) ou 1 000 V c.c. et dont la fréquence nominale ne dépasse pas 100 Hz. Cette quatrième édition annule et remplace la troisième édition publiée en 2005 dont elle constitue une révision technique. Toutes les modifications acceptées peuvent être classées comme des révisions mineures.
Fiksni kondenzatorji za uporabo v elektronskih napravah - 14. del: Področna specifikacija - Fiksni kondenzatorji za dušenje elektromagnetnega motenja in za povezovanje z omrežnim napajanjem (IEC 60384-14:2013)
Ta del standarda IEC 60384 velja za kondenzatorje in kombinacije uporov/kondenzatorjev, ki se priključijo v izmenično napajalno omrežje ali drug vir napajanja z nazivno sistemsko napetostjo do 1000 V izmenične napetosti (efektivne izmenične napetosti) ali do 1000 V enosmerne napetosti in z nazivno frekvenco do 100 Hz.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2014
)LNVQLNRQGHQ]DWRUML]DXSRUDERYHOHNWURQVNLKQDSUDYDKGHO 3RGURþQD
VSHFLILNDFLMD)LNVQLNRQGHQ]DWRUML]DGXãHQMHHOHNWURPDJQHWQHJDPRWHQMDLQ]D
SRYH]RYDQMH]RPUHåQLPQDSDMDQMHP ,(&
Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed
capacitors for electromagnetic interference suppression and connection to the supply
mains
Festkondensatoren zur Verwendung in Geräten der Elektronik - Teil 14:
Rahmenspezifikation - Festkondensatoren zur Unterdrückung elektromagnetischer
Störungen, geeignet für Netzbetrieb
Condensateurs fixes utilisés dans les équipements électroniques - Partie 14:
Spécification intermédiaire - Condensateurs fixes d'antiparasitage et raccordement à
l'alimentation
Ta slovenski standard je istoveten z: EN 60384-14:2013
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 60384-14
NORME EUROPÉENNE
August 2013
EUROPÄISCHE NORM
ICS 31.060.10 Supersedes EN 60384-14:2005
English version
Fixed capacitors for use in electronic equipment -
Part 14: Sectional specification -
Fixed capacitors for electromagnetic interference suppression and
connection to the supply mains
(IEC 60384-14:2013)
Condensateurs fixes utilisés dans les Festkondensatoren zur Verwendung in
équipements électroniques - Geräten der Elektronik -
Partie 14: Spécification intermédiaire - Teil 14: Rahmenspezifikation -
Condensateurs fixes d'antiparasitage et Festkondensatoren zur Unterdrückung
raccordement à l'alimentation elektromagnetischer Störungen, geeignet
(CEI 60384-14:2013) für Netzbetrieb
(IEC 60384-14:2013)
This European Standard was approved by CENELEC on 2013-07-10. 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, Former Yugoslav Republic of Macedonia, 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
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60384-14:2013 E
Foreword
The text of document 40/2199/FDIS, future edition 4 of IEC 60384-14, 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 60384-14:2013.
The following dates are fixed:
(dop) 2014-04-10
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-07-10
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60384-14:2005.
EN 60384-14:2005:
All changes that have been agreed upon can be categorized as minor revisions.
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 60384-14:2013 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 60335-1 NOTE Harmonised as EN 60335-1.
IEC 60384-14-3 NOTE Harmonised as EN 60384-14-3.
IEC 60950-1 NOTE Harmonised as EN 60950-1.
IEC 61140 NOTE Harmonised as EN 61140.
- 3 - EN 60384-14:2013
Annex ZA
(normative)
Normative references to i nternational publications
with their corresponding European publications
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.
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 60060-1 2010 High-voltage test techniques - EN 60060-1 2010
Part 1: General definitions and test
requirements
IEC 60063 Preferred number series for resistors and - -
capacitors
IEC 60065 (mod) 2001 Audio, video and similar electronic apparatus EN 60065 2002
+ corr. August 2002 - Safety requirements + corr. August 2007
+ A1 (mod) 2005 + A1 2006
+ A2 (mod) 2010 + A2 2010
- - + A11
- - + A12
1)
IEC 60068-1 1988 Environmental testing - EN 60068-1 1994
+ corr. October 1988 Part 1: General and guidance
IEC 60068-2-17 Environmental testing - EN 60068-2-17
Part 2: Tests - Test Q: Sealing
IEC 60384-1 2008 Fixed capacitors for use in electronic EN 60384-1 2009
+ corr. November 2008 equipment -
Part 1: Generic specification
2) 3)
IEC 60417 Data Graphical symbols for use on equipment HD 243 S12
base
4) 5)
IEC 60664-1 Insulation coordination for equipment within EN 60664-1
low-voltage systems -
Part 1: Principles, requirements and tests
IEC 60695-11-10 Fire hazard testing - EN 60695-11-10
Part 11-10: Test flames - 50 W horizontal
and vertical flame test methods
IEC 60940 Guidance information on the application of - -
capacitors, resistors, inductors and complete
filter units for radio interference suppression
IEC 61193-2 Quality assessment systems - EN 61193-2
Part 2: Selection and use of sampling plans
for inspection of electronic components and
packages
1)
EN 60068-1 includes A1 to IEC 60068-1
+ corr. October .
2)
HD 243 S12 includes supplement(s) M to K to IEC 60417.
3)
HD 243 S12 is superseded by EN 60417-2:1999, which is based on IEC 60417-2:1998.
4)
EN 60664-1 includes A1 + A2 to IEC 60664-1.
5)
EN 60664-1 is superseded by EN 60664-1:2007, which is based on IEC 60664-1:2007.
Publication Year Title EN/HD Year
IEC 61210 (mod) Connecting devices - Flat quick-connect EN 61210
terminations for electrical copper conductors
- Safety requirements
CISPR 17 Methods of measurement of the suppression EN 55017
characteristics of passive EMC filtering
devices
ISO 7000 Graphical symbols for use on equipment - - -
Registered symbols
IEC 60384-14 ®
Edition 4.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –
Part 14: Sectional specification – Fixed capacitors for electromagnetic
interference suppression and connection to the supply mains
Condensateurs fixes utilisés dans les équipements électroniques –
Partie 14: Spécification intermédiaire – Condensateurs fixes d'antiparasitage
et raccordement à l'alimentation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 31.060.10 ISBN 978-2-83220-828-1
– 2 – 60384-14 © IEC:2013
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 Outline drawing and dimensions . 9
1.4.2 Mounting . 9
1.4.3 Ratings and characteristics . 10
1.4.4 Marking . 10
1.5 Terms and definitions . 10
1.6 Marking . 15
1.6.1 Marking of capacitors . 15
1.6.2 Marking of packaging. 15
1.6.3 Additional marking . 16
1.7 Classification of Class X and Class Y capacitors . 16
1.7.1 Classification of X capacitors . 16
1.7.2 Classification of Y capacitors . 16
2 Preferred ratings and characteristics . 17
2.1 Preferred characteristics . 17
2.1.1 Preferred climatic categories . 17
2.2 Preferred values of ratings . 18
2.2.1 Nominal capacitance (C ) . 18
N
2.2.2 Tolerance on nominal capacitance . 18
2.2.3 Rated voltage (U ) . 18
R
2.2.4 Nominal resistance (R ) . 18
N
2.2.5 Rated temperature . 18
2.2.6 Passive flammability . 18
2.3 Requirements for sleeving, tape, tubing and wire insulation . 18
3 Assessment procedures . 19
3.1 Primary stage of manufacture . 19
3.2 Structurally similar components . 19
3.3 Certified records of released lots . 19
3.4 Approval testing . 19
3.4.1 Safety tests only approval. 19
3.4.2 Qualification approval . 19
3.4.3 Qualification approval on the basis of the fixed sample size
procedure . 19
3.5 Quality conformance inspection . 30
3.5.1 Formation of inspection lots . 30
3.5.2 Test schedule . 31
3.5.3 Delayed delivery . 31
3.5.4 Assessment level . 31
4 Test and measurement procedures . 32
4.1 Visual examination and check of dimensions . 32
4.1.1 Creepage distances and clearances . 32
60384-14 © IEC:2013 – 3 –
4.2 Electrical tests . 33
4.2.1 Voltage proof . 33
4.2.2 Capacitance . 35
4.2.3 Tangent of loss angle . 35
4.2.4 Resistance (Equivalent Series Resistance (ESR)) (for RC units only) . 36
4.2.5 Insulation resistance . 36
4.3 Robustness of terminations . 37
4.4 Resistance to soldering heat . 37
4.4.1 Test conditions . 37
4.4.2 Final inspection, measurements and requirements . 38
4.5 Solderability . 38
4.5.1 Test conditions . 38
4.5.2 Requirements . 38
4.6 Rapid change of temperature . 38
4.6.1 Final inspection . 38
4.7 Vibration . 38
4.7.1 Test conditions . 39
4.7.2 Final inspection . 39
4.8 Bump . 39
4.8.1 Test conditions . 39
4.8.2 Final inspection, measurements and requirements . 39
4.9 Shock . 39
4.9.1 Test conditions . 39
4.9.2 Final inspection, measurements and requirements . 40
4.10 Container sealing . 40
4.10.1 Test conditions . 40
4.10.2 Requirements . 40
4.11 Climatic sequence . 40
4.11.1 Initial measurements . 40
4.11.2 Dry heat . 41
4.11.3 Damp heat, cyclic, test Db, first cycle . 41
4.11.4 Cold . 41
4.11.5 Damp heat, cyclic, test Db, remaining cycles . 41
4.11.6 Final inspection, measurements and requirements . 41
4.12 Damp heat, steady state . 41
4.12.1 Initial measurements . 42
4.12.2 Test conditions . 42
4.12.3 Final inspection, measurements and requirements . 42
4.13 Impulse voltage . 42
4.13.1 Initial measurements . 42
4.13.2 Test conditions . 43
4.13.3 Requirements . 43
4.14 Endurance . 44
4.14.1 Test conditions . 44
4.14.2 Initial measurements . 44
4.14.3 Endurance for Class X capacitors and RC units containing Class X
capacitors . 44
4.14.4 Endurance for Class Y capacitors and RC units containing Class Y
capacitors . 45
– 4 – 60384-14 © IEC:2013
4.14.5 Endurance for the lead-through arrangements . 45
4.14.6 Test conditions – Combined voltage/current tests . 45
4.14.7 Final inspection, measurements and requirements . 46
4.15 Charge and discharge . 46
4.15.1 Initial measurements . 46
4.15.2 Test conditions . 46
4.15.3 Final measurements and requirements . 47
4.16 Radiofrequency characteristics . 47
4.17 Passive flammability test . 47
4.17.1 Testing according to IEC 60384-1 . 47
4.17.2 Alternative passive flammability test . 48
4.18 Active flammability test . 49
4.18.3 Adjustment of U . 50
i
4.18.4 Requirements . 50
4.19 Component solvent resistance (if applicable) . 50
4.20 Solvent resistance of the marking . 51
Annex A (normative) Circuit for the impulse voltage test . 52
Annex B (normative) Circuit for the endurance test . 54
Annex C (normative) Circuit for the charge and discharge test . 55
Annex D (normative) Declaration of design (confidential to the manufacturer and the
certification body) . 56
Annex E (informative) Pulse test circuits . 57
Annex F (normative) Particular requirements for safety test of surface-mounting
capacitors . 59
Annex G (informative) Capacitance ageing of fixed capacitors of ceramic dielectric,
Class 2 . 62
Bibliography . 64
Figure 1 – Two-terminal EMI suppression capacitor . 11
Figure 2 – RC unit. 11
Figure 3 – Lead-through capacitor (coaxial) . 11
Figure 4 – Lead-through capacitors . 12
Figure 5 – By-pass capacitors . 13
Figure 6 – Test duration (s) . 30
Figure 7 – Impulse wave form . 43
Figure 8 – Typical circuit for pulse loading of capacitors under a.c. voltage . 49
Figure 9 – Fundamental a.c. wave with randomly, not synchronized, superimposed
high-voltage pulse. 50
Figure A.1 – Impulse voltage test circuit . 52
Figure B.1 – Endurance test circuit . 54
Figure C.1 – Charge and discharge test circuit . 55
Figure F.1 – Example of test substrate for safety test according to Table F.1 . 61
Table 1 – Classification of Class X capacitors . 16
Table 2 – Classification of Class Y capacitors . 17
Table 3 – Sampling plan – Tests concerning safety requirements only . 21
60384-14 © IEC:2013 – 5 –
Table 4 – Sampling plan – Safety and performance tests qualification approval –
Assessment level DZ . 22
Table 5 – Test schedule and sampling plan for lot-by-lot tests . 23
Table 6 – Test schedule for safety tests only (1 of 2) . 24
Table 7 – Test schedule for safety and performance tests qualification approval –
Assessment level DZ . 26
Table 8 – Assessment level . 32
Table 9 – Creepage distances and clearances . 33
Table 10 – Voltage proof . 35
Table 11 – Insulation resistance – Safety tests only . 36
Table 12 – Insulation resistance – Safety and performance tests . 37
Table 13 – Resistance to soldering heat – Requirements . 38
Table 14 – Climatic sequence – Requirements . 41
Table 15 – Damp heat, steady state – Requirements . 42
Table 16 – Endurance – Requirements . 46
Table 17 – Charge and discharge – Requirements . 47
Table A.1 – Values of C , C , R , R , C . 52
X T P S p
Table A.2 – Values and tolerances of C , t , t . 53
X r d
Table F.1 – Test schedule and sampling plan for safety test of surface mount
capacitors . 60
– 6 – 60384-14 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 14: Sectional specification –
Fixed capacitors for electromagnetic interference
suppression and connection to the supply mains
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 60384-14 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This fourth edition cancels and replaces the third edition published in 2005. It constitutes a
technical revision. 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
40/2199/FDIS 40/2232/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.
60384-14 © IEC:2013 – 7 –
A list of all the parts of the IEC 60384 series, published 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 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 – 60384-14 © IEC:2013
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –
Part 14: Sectional specification –
Fixed capacitors for electromagnetic interference
suppression and connection to the supply mains
1 General
1.1 Scope
This part of IEC 60384 applies to capacitors and resistor-capacitor combinations which will be
connected to an a.c. mains or other supply with nominal voltage not exceeding 1 000 V a.c.
(r.m.s.) or 1 000 V d.c. and with a nominal frequency not exceeding 100 Hz.
1.2 Object
The principal object of this part of IEC 60384 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 will be of equal or higher performance level; lower
performance levels are not permitted.
This standard also provides a schedule of safety tests to be used by national testing stations
in countries where approval by such stations is required.
The overvoltage categories in combination with the a.c. mains voltages for the capacitors
classified in this standard should be taken from IEC 60664-1.
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 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60063, Preferred number series for resistors and capacitors
IEC 60065:2001, Audio, video and similar electronic apparatus – Safety requirements
Amendment 1:2005
Amendment 2:2010
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
IEC 60068-2-17, Environmental testing – Part 2-17: Tests – Test Q: Sealing
IEC 60384-1:2008, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 60417, Graphical symbols for use on equipment
60384-14 © IEC:2013 – 9 –
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-11-10, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and
vertical flame test methods
IEC 60940, Guidance information on the application of capacitors, resistors, inductors and
complete filter units for radio interference suppression
IEC 61193-2, Quality assessment systems – Part 2: Selection and use of sampling plans for
inspection of electronic components and packages
IEC 61210, Connecting devices – Flat quick-connect terminations for electrical copper
conductors – Safety requirements
CISPR 17, Methods of measurement of the suppression characteristics of passive EMC
filtering devices
ISO 7000, Graphical symbols for use on equipment – Index and synopsis
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.
The following information shall be given in each detail specification and the values quoted
shall preferably be selected from the appropriate clause of this sectional specification.
NOTE The information given in 1.4.1 may, for convenience, be presented in tabular form.
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, 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 capacitance values/voltage
ranges are covered by a detail specification, their dimensions and their associated tolerances
shall be placed in a table below the drawing.
When the configuration is other than that described above, the detail specification shall state
such dimensional information as will adequately describe the capacitor. 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, 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
– 10 – 60384-14 © IEC:2013
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, bump or shock tests.
If recommendations for mounting for "normal" use are made, they should be included in the
detail specification under "1.8 Additional information (Not for inspection purposes)". If
recommendations are included, a warning can be given that the full vibration, bump and shock
performance may not be available if mounting methods other than those specified in 1.1 of the
detail specification are used.
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 Nominal capacitance range
The preferred range of capacitance values should follow 2.2.1 of this standard.
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
the register of approvals, available for example on the website www.iecq.org”.
1.4.3.2 Nominal resistance range (if applicable)
The preferred range of resistance values should follow 2.2.4 of this standard
1.4.3.3 Particular characteristics
Additional characteristics may be listed, when they are considered necessary to specify the
component adequately for design and application purposes.
1.4.4 Marking
The detail specification shall specify the content of the marking on the capacitor and on the
package. See also 1.6 of this standard.
1.5 Terms and definitions
For the purposes of this document, the terms and definitions of IEC 60384-1, as well as the
following, apply.
NOTE Some definitions of IEC 60384-1 have been expanded, as is indicated by a note.
1.5.1
a.c. capacitor
capacitor designed essentially for application with a power-frequency alternating voltage
Note 1 to entry: a.c. capacitors may be used on d.c. supplies having the same voltage as the a.c. r.m.s. rated
voltage of the capacitor.
1.5.2
electromagnetic interference suppression capacitor
radio interference suppression capacitor
a.c. capacitor used for the reduction of electromagnetic interference caused by electrical or
electronic apparatus, or other sources
60384-14 © IEC:2013 – 11 –
1.5.3
capacitor of Class X
RC unit of Class X
capacitor or RC unit of a type suitable for use in situations where failure of the capacitor or
RC unit would not lead to danger of electrical shock but could result in a risk of fire
1.5.4
capacitor of Class Y
RC unit of Class Y
capacitor or RC unit of a type suitable for use in situations where failure of the capacitor could
lead to danger of electric shock
1.5.5
two-terminal capacitor
electromagnetic interference suppression capacitor having two terminals
SEE: Figure 1.
IEC 1311/13
Figure 1 – Two-terminal EMI suppression capacitor
1.5.6
series RC unit
functional combination of a resistor in series with a capacitor of Class X or Y
SEE: Figure 2.
IEC 1312/13
Figure 2 – RC unit
Note 1 to entry: In this standard, where the word "capacitor" appears, the words "capacitor or RC unit" should be
understood where the context permits.
1.5.7
lead-through capacitor,
capacitor with a central current-carrying conductor surrounded by a capacitor element which
is symmetrically bonded to the central conductor and to the outer casing to form a coaxial
construction; it is coaxially mounted
SEE: Figure 3.
Central conductor
carrying supply current
Earthed circular
mounting flange
IEC 1313/13
Figure 3 – Lead-through capacitor (coaxial)
– 12 – 60384-14 © IEC:2013
1.5.8
lead-through capacitor,
capacitor in which the supply currents flow through or across the electrodes
SEE: Figures 4a, 4b, 4c and 4d.
IEC 1314/13
Figure 4a – Lead-through capacitor for symmetrical use (non-coaxial)
IEC 1315/13
Earthed metal case
Figure 4b – Lead-through capacitor for asymmetrical use (non-coaxial)
IEC 1316/13
Earthed metal case
Figure 4c – Multiple unit lead-through capacitor (non-coaxial)
for symmetrical and asymmetrical use
IEC 1317/13
Figure 4d – Multiple unit lead-through capacitor
Figure 4 – Lead-through capacitors
1.5.9
by-pass capacitor
capacitor where radiofrequency interference currents are by-passed
60384-14 © IEC:2013 – 13 –
Note 1 to entry: There are three common forms: single, delta and T-connected. The single capacitor consists of a
capacitor in a metal case with one termination connected to the case as in Figure 5a; the delta form consists of an
X-capacitor and two Y2-capacitors arranged in a delta network as in Figure 5b; the T-connected form consists of
three capacitors C , C and C connected in T as shown in Figure 5c.
A B C
The delta and T-connected forms are electrically equivalent (star-delta transformation). In the T-connected form the
X-capacitor is the result of the series connection of C – C and the Y-capacitors are the results of the series
B C
connections of C – C and C – C .
A B A C
When T-connected capacitors are submitted to tests, and it is stated that voltages shall be applied across the X-
capacitors, such voltages shall be applied between the line and neutral terminations. Similarly, when it is stated
that voltages shall be applied across the Y-capacitors, such voltages shall be applied between the line and neutral
terminations connected together and the earth termination.
SEE: Figures 5a, 5b and 5c.
IEC 1318/13
Figure 5a – Single by-pass capacitor
Y
X
Y
IEC 1319/13
Figure 5b – Delta by-pass capacitor (in metallic housing)
L
C
A
C
B
C
C
N
IEC 1320/13
Figure 5c – Example of a T-connected by-pass capacitor (in non-metallic housing)
NOTE For capacitors with non-metallic housings, the earth connection is brought out as a separate termination as
is shown in Figure 5c.
Figure 5 – By-pass capacitors
SIST EN 6038
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