IEC 60938-2-2:1999

Fixed inductors for electromagnetic interference suppression - Part 2-2: Blank detail specification - Inductors for which safety tests are required (only)

IEC 60938-2-2:1999 forms the basis for a uniform procedure for a common mark. It implements the approval schedule for safety tests only in IEC 60938-2, requires a declaration of design for parameters relevant to safety tests and prescribes conformance tests to be conducted on every lot prior to its release and re-qualification tests depending on changes of the design.

Inductances fixes d'antiparasitage - Partie 2-2: Spécification particulière cadre - Inductances nécessitant des essais de sécurité (uniquement)

La CEI 60938-2-2:1999 constitue la base d'une procédure uniforme de marquage commun. Elle met en oeuvre le programme d'homologation pour les essais de sécurité uniquement de la CEI 60938-2, nécessite une déclaration de conception pour les paramètres relatifs aux essais de sécurité et indique les essais de conformité à réaliser sur tous les lots avant leur livraison et les essais de requalification en fonction des modifications apportées à la conception.

General Information

• Status: Published
• Publication Date: 28-Oct-1999
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.100.10 - Magnetic components
• ICS: 31.020 - Electronic components in general
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Current Stage: WPUB - Publication withdrawn
• Start Date: 05-Aug-2024
• Completion Date: 05-Aug-2024

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60938-2-2
QC 280102
First edition
1999-10
Fixed inductors for electromagnetic
interference suppression –
Part 2-2:
Blank detail specification –
Inductors for which safety tests are required (only)
Inductances fixes d'antiparasitage –
Partie 2-2:
Spécification particulière cadre –
Inductances nécessitant des tests de sécurité (uniquement)
Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are
available. 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.
Validity of this publication
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 the date of the reconfirmation of the publication is available
in the IEC catalogue.
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 to be found at the following IEC sources:
• IEC web site*
•
Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

INTERNATIONAL IEC
STANDARD
60938-2-2
QC 280102
First edition
1999-10
Fixed inductors for electromagnetic
interference suppression –
Part 2-2:
Blank detail specification –
Inductors for which safety tests are required (only)
Inductances fixes d'antiparasitage –
Partie 2-2:
Spécification particulière cadre –
Inductances nécessitant des tests de sécurité (uniquement)
 IEC 1999  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 Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
J
International Electrotechnical Commission
For price, see current catalogue

– 2 – 60938-2-2 © IEC:1999(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-2: Blank detail specification –
Inductors for which safety tests are required (only)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60938-2-2 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
FDIS Report on voting
40/1113/FDIS 40/1139/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 3.
The QC number that appears on the front cover of this publication is the specification number
in the IEC Quality Assessment System for Electronic Components (IECQ).
Annex A forms an integral part of this standard.

60938-2-2 © IEC:1999(E) – 3 –
The committee has decided that this publication remains valid until 2005.
At this date, in accordance with the committee’s decision, 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.

– 4 – 60938-2-2 © IEC:1999(E)
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-2: Blank detail specification –
Inductors for which safety tests are required (only)
INTRODUCTION
Blank detail specification
This blank detail specification forms the basis for a uniform procedure for a common mark. It
implements the approval schedule for safety tests only in IEC 60938-2, requires a declaration
of design for parameters relevant to safety tests and prescribes conformance tests to be
conducted on every lot prior to its release and re-qualification tests depending on changes of
the design.
In comparison with IEC 60938-2-1 which provides safety tests and performance tests, this
specification is restricted to safety tests only.
The use of IEC 60938-2-1 may be more appropriate for components manufactured in mass
production, whereas this specification may be necessary in those cases where approval and re-
qualification tests contribute considerably to the costs of the product.
A blank detail specification is a supple
...

IEC 60938-2-2 ®
Edition 1.0 1999-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed inductors for electromagnetic interference suppression –
Part 2-2: Blank detail specification – Inductors for which safety tests are
required (only)
Inductances fixes d’antiparasitage –
Partie 2-2: Spécification particulière cadre – Inductances nécessitant des essais
de sécurité (uniquement)
Copyright © 1999 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, 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
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If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
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IEC 60938-2-2 ®
Edition 1.0 1999-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed inductors for electromagnetic interference suppression –

Part 2-2: Blank detail specification – Inductors for which safety tests are

required (only)
Inductances fixes d’antiparasitage –

Partie 2-2: Spécification particulière cadre – Inductances nécessitant des essais

de sécurité (uniquement)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX J
ICS 29.100.10; 31.020 ISBN 978-2-83220-772-7

– 2 – 60938-2-2 © IEC:1999
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-2: Blank detail specification –
Inductors for which safety tests are required (only)

FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60938-2-2 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This bilingual version (2013-05) corresponds to the monolingual English version, published in
1999-10.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1113/FDIS 40/1139/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 French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A forms an integral part of this standard.

60938-2-2 © IEC:1999 – 3 –
The committee has decided that this publication remains valid until 2005.
At this date, in accordance with the committee’s decision, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 4 – 60938-2-2 © IEC:1999
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-2: Blank detail specification –
Inductors for which safety tests are required (only)

INTRODUCTION
Blank detail specification
This blank detail specification forms the basis for a uniform procedure for a common mark. It
implements the approval schedule for safety tests only in IEC 60938-2, requires a declaration
of design for parameters relevant to safety tests and prescribes conformance tests to be
conducted on every lot prior to its release and re-qualification tests depending on changes of
the design.
In comparison with IEC 60938-2-1 which provides safety tests and performance tests, this
specification is restricted to safety tests only.
The use of IEC 60938-2-1 may be more appropriate for components manufactured in mass
production, whereas this specification may be necessary in those cases where approval and re-
qualification tests contribute considerably to the costs of the product.
A blank detail specification is a supplementary document to the sectional specification and
contains requirements for style and layout and minimum content of detail specifications. In the
preparation of detail specifications the content of 1.4 of the sectional specification shall be
taken into account.
The numbers between square brackets on the first page of the detail specification correspond
to the following information which shall be inserted in the position indicated.
Identification of the detail specification and of the inductor
The first page of the detail specification should have the layout recommended on the next page
of this blank detail specification.
[0] Manufacturer's name.
[0A] Manufacturer's style designation.
[1] The "International Electrotechnical Commission" or the National Standards Organisation
under whose authority the detail specification is drafted.
[2] The IEC or National Standards number of the detail specification, date of issue and any
further information required by the national system.
[3] The number and issue number of the IEC or national generic specification.
[4] The IEC number of the blank detail specification.
Identification of the inductor
[5] A short description of the inductor or range of inductors.
[6] Information on typical construction (when applicable).

60938-2-2 © IEC:1999 – 5 –
[7] Outline drawing with main dimensions which are of importance for interchangeability
and/or reference to the national or international documents for outlines. Alternatively, this
drawing may be given in an annex to the detail specification, but should always contain
an illustration of the general outer appearance of the inductor.
[8] Reference data on the most important properties, to allow comparison between the
various inductor types intended for the same, or for similar applications.

[1] IEC 60938-2-1XX [2]
QC XXXXXXXXXXXX
ELECTRONIC COMPONENTS OF ASSESSED IEC 60938-2-2 [4]
QUALITY IN ACCORDANCE WITH: QC XXXXXX

[3] FIXED INDUCTORS FOR
ELECTROMAGNETIC INTERFERENCE
SUPPRESSION FOR WHICH SAFETY [5]
Outline drawing: (see table 1) TESTS ARE REQUIRED
(. angle projection)
[7] [6]
(Other shapes are permitted within the dimensions
given)
Safety tests only [8]
NOTES [1] to [9] see pages 3 and 4.

Information on the availability of components qualified
to this detail specification is given in the Register
of Approvals.
1 General data
1.1 Recommended method(s) of mounting (to be inserted)
(See 1.4.3 of IEC 60938-2.)
– 6 – 60938-2-2 © IEC:1999
1.2 Dimensions
Table 1 – Dimensions related to case size

Dimensions
Case size
reference or
mm
type
L W H L L L
1 2 3 4
NOTE 1 – When there is no case size reference, the dimensions should be given per type
designation.
NOTE 2 – The dimensions should be given as maximum dimensions or as nominal dimensions with
a tolerance.
1.3 Ratings and characteristics
) (see table 2)
Rated inductance (L
R
Tolerance on rated inductance
Rated current (I) range (see table 2)
DC resistance (R) (see table 2)
Rated voltage
Rated temperature
Climatic category
Category of passive flammability (if applicable)

Table 2 – Values of inductance, rated current and
d.c. resistance related to type designation
Ordering code, type L I R
R R max
designation
per line per line
mH A Ω
1.4 Related documents
Generic specification: IEC 60938-1:1999, Fixed inductors for electromagnetic interference
suppression – Part 1: Generic specification
Sectional specification: IEC 60938-2:1999, Fixed inductors for electromagnetic interference
suppression – Part 2: Sectional specification

60938-2-2 © IEC:1999 – 7 –
1.5 Marking
The marking of the inductor shall be in accordance with the requirements of 1.6 of
IEC 60938-2.
The details of the marking of the component and package shall be given in full in the detail
specification.
1.6 Ordering information
Orders for inductors covered by this specification shall contain, in clear or in coded form, the
following minimum information:
a) type designation;
b) rated inductance;
c) tolerance on rated inductance;
d) rated voltage;
e) rated current;
f) number and issue reference of the detail specification and style reference.
1.7 Additional information (not for inspection purposes)
1.8 Additional or increased seve
...