IEC 62025-1:2007

High frequency inductive components - Non-electrical characteristics and measuring methods - Part 1: Fixed, surface mounted inductors for use in electronic and telecommunication equipment

IEC 62025-1:2007 applies to fixed, surface mounted inductors and ferrite beads. Should conflict arise between these specifications and the detail specifications, the latter will take precedence. The object of this standard is to establish requirements for fixed, surface mounted inductors, to describe terms, to give recommendations for standard values and dimensions and to give guidance on fixed, surface mounted inductors. This edition includes the following significant technical changes with respect to the previous edition:
- nomenclature of dimensions in Figure 1 has been changed;
- a new Table 1, Letter code for inductance values, has been added;
- dimensions for shapes in Table 2 and Table 5 have been added;
- new operating temperature ratings in Table 9 have been added.

Composants inductifs à haute fréquence - Caractéristiques non électriques et méthodes de mesure - Partie 1: Inductances fixes pour montage en surface utilisées dans les matériels électroniques et les équipements de télécommunications

La CEI 62025-1:2007 s'applique aux inductances fixes pour montage en surface et aux perles de ferrite. En cas de conflit entre cette spécification et les spécifications particulières, ce sont ces dernières qui auront la priorité. La présente norme vise à établir des exigences applicables aux inductances fixes pour montage en surface en décrivant les termes nécessaires, en donnant des recommandations pour les valeurs et les dimensions normalisées et en proposant des lignes directrices sur les inductances fixes pour montage en surface. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- une nomenclature des dimensions de la Figure 1 a été modifiée;
- un nouveau Tableau 1, Lettres d'identification pour les valeurs d'inductance, a été ajouté;
- les dimensions des formes dans les Tableaux 2 et 5 ont été ajoutées;
- de nouvelles valeurs de températures assignées au Tableau 9 ont été ajoutées.

General Information

• Status: Published
• Publication Date: 14-May-2007
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Drafting Committee: MT 9 - TC 51/MT 9
• Current Stage: PPUB - Publication issued
• Start Date: 15-Sep-2007
• Completion Date: 15-May-2007

Relations

• Revises: IEC 62025-1:2002 - High frequency inductive components - Non-electrical characteristics and measuring methods - Part 1: Fixed, surface mounted inductors for use in electronic and telecommunication equipment
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 62025-1
Second edition
2007-05
High frequency inductive components –
Non-electrical characteristics and measuring
methods –
Part 1:
Fixed, surface mounted inductors for use in
electronic and telecommunication equipment

Reference number
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
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

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International Standards for all electrical, electronic and related technologies.

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INTERNATIONAL IEC
STANDARD 62025-1
Second edition
2007-05
High frequency inductive components –
Non-electrical characteristics and measuring
methods –
Part 1:
Fixed, surface mounted inductors for use in
electronic and telecommunication equipment

PRICE CODE
Commission Electrotechnique Internationale
M
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62025-1 © IEC:2007(E)
CONTENTS
FOREWORD.3

1 Scope and object.5
2 Normative references .5
3 Graphical symbols and designations.5
3.1 Designation .5
4 Shape.7
5 Dimensions .8
5.1 Shape D .8
5.2 Shape K .9
5.3 Tolerances for outline dimensions .9
6 Ratings and characteristics .10
6.1 Nominal inductance or impedance .10
6.2 Tolerance for nominal inductance or impedance.10
6.3 Operating temperature range.10
7 Marking .12
8 Direction marking or shape of polarity .12

Bibliography.13

Table 1 – Letter code for inductance value.6
Table 2 – Dimensions for shape D .8
Table 3 – Dimensions of height for shape D (R 20 series).8
Table 4 – Dimensions of height for shape D less than 1,00 mm .9
Table 5 – Dimensions for shape K .9
Table 6 – Tolerances for outline dimension and height.10
Table 7 – E 24 series for nominal inductance or impedance.10
Table 8 – Tolerance for nominal inductance or impedance.10
Table 9 – Temperatures to be selected for operating temperature ranges .11
Table 10 – User reference / Examples of application and operating temperature range.11

Figure 1 – Shapes of inductor and ferrite beads (examples).7

62025-1 © IEC:2007(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
HIGH FREQUENCY INDUCTIVE COMPONENTS –
NON-ELECTRICAL CHARACTERISTICS AND MEASURING METHODS –

Part 1: Fixed, surface mounted inductors for use in electronic and
telecommunication equipment
FOREWORD
1) The International Electrotechnical Commission (IEC) 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, 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 62025-1 has been prepared by IEC technical committee 51:
Magnetic components and ferrite materials.
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– nomenclature of dimensions in Figure 1 has been changed;
– a new Table 1, Letter code for inductance values, has been added;
– dimensions for shapes in Table 2 and Table 5 have been added;
– new operating temperature ratings in Table 9 have been added.

– 4 – 62025-1 © IEC:2007(E)
The text of this standard is based on the following documents:
FDIS Report on voting
51/883/FDIS 51/889/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.
A list of all parts of the IEC 62025 series, published under the general title High frequency
inductive components – Non-electrical characteristics and measuring methods, can be found
on the IEC website.
The committee has decided that the con
...

IEC 62025-1 ®
Edition 2.0 2007-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High frequency inductive components – Non-electrical characteristics and
measuring methods –
Part 1: Fixed, surface mounted inductors for use in electronic and
telecommunication equipment
Composants inductifs à haute fréquence – Caractéristiques non électriques et
méthodes de mesure –
Partie 1: Inductances fixes pour montage en surface utilisées dans les matériels
électroniques et les équipements de télécommunications

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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
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IEC 62025-1 ®
Edition 2.0 2007-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High frequency inductive components – Non-electrical characteristics and

measuring methods –
Part 1: Fixed, surface mounted inductors for use in electronic and

telecommunication equipment
Composants inductifs à haute fréquence – Caractéristiques non électriques et

méthodes de mesure –
Partie 1: Inductances fixes pour montage en surface utilisées dans les matériels

électroniques et les équipements de télécommunications

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 29.100.10 ISBN 978-2-8322-1334-6

– 2 – 62025-1  IEC:2007
CONTENTS
FOREWORD . 3

1 Scope and object . 5
2 Normative references . 5
3 Graphical symbols and designations . 5
3.1 Designation . 5
4 Shape. 7
5 Dimensions . 8
5.1 Shape D . 8
5.2 Shape K . 9
5.3 Tolerances for outline dimensions . 9
6 Ratings and characteristics . 10
6.1 Nominal inductance or impedance . 10
6.2 Tolerance for nominal inductance or impedance . 10
6.3 Operating temperature range. 10
7 Marking . 12
8 Direction marking or shape of polarity . 12

Bibliography . 13

Table 1 – Letter code for inductance value. 6
Table 2 – Dimensions for shape D . 8
Table 3 – Dimensions of height for shape D (R 20 series) . 8
Table 4 – Dimensions of height for shape D less than 1,00 mm . 9
Table 5 – Dimensions for shape K . 9
Table 6 – Tolerances for outline dimension and height. 10
Table 7 – E 24 series for nominal inductance or impedance . 10
Table 8 – Tolerance for nominal inductance or impedance . 10
Table 9 – Temperatures to be selected for operating temperature ranges . 11
Table 10 – User reference / Examples of application and operating temperature range . 11

Figure 1 – Shapes of inductor and ferrite beads (examples) . 7

62025-1  IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
HIGH FREQUENCY INDUCTIVE COMPONENTS –
NON-ELECTRICAL CHARACTERISTICS AND MEASURING METHODS –

Part 1: Fixed, surface mounted inductors for use in electronic
and telecommunication equipment

FOREWORD
1) The International Electrotechnical Commission (IEC) 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, 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 62025-1 has been prepared by IEC technical committee 51:
Magnetic components and ferrite materials.
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– nomenclature of dimensions in Figure 1 has been changed;
– a new Table 1, Letter code for inductance values, has been added;
– dimensions for shapes in Table 2 and Table 5 have been added;
– new operating temperature ratings in Table 9 have been added.

– 4 – 62025-1  IEC:2007
This bilingual version (2014-01) corresponds to the monolingual English version, published in
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