IEC 62317-14:2008
(Main)Ferrite cores - Dimensions - Part 14: EFD-cores for use in power supply applications
Ferrite cores - Dimensions - Part 14: EFD-cores for use in power supply applications
IEC 62317-14:2008 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EFD-cores, the essential dimensions of coil formers to be used with them, and the effective parameter values to be used in calculations involving them.
Noyaux ferrites - Dimensions - Partie 14: Noyaux EFD utilisés dans des applications d'alimentation électrique
La CEI 62317-14:2008 spécifie les dimensions qui sont importantes pour l'interchangeabilité mécanique d'une gamme préférentielle de noyaux EFD, les dimensions essentielles des corps des bobines qui doivent être utilisées avec les noyaux et les valeurs efficaces des paramètres à utiliser pour les calculs les concernant.
General Information
Relations
Buy Standard
Standards Content (Sample)
IEC 62317-14
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
Ferrite cores – Dimensions –
Part 14: EFD-cores for use in power supply applications
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.
IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
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
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 62317-14
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
Ferrite cores – Dimensions –
Part 14: EFD-cores for use in power supply applications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
K
ICS 29.100.10 ISBN 2-8318-9972-9
– 2 – 62317-14 © IEC:2008(E)
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references.5
3 Primary standards.5
3.1 Dimensions of EFD-cores .5
3.1.1 Principal dimensions .5
3.1.2 Effective parameter and A values .7
min
3.2 Main dimensions for coil formers.7
3.3 Pin locations and base outlines.8
3.4 Pin diameter .9
4 Mounting .9
Annex A (informative) EFD–core design .10
Figure 1 – Dimensions of EFD-cores .6
Figure 2 – Main dimensions of coil formers for EFD-cores .7
Figure 3 – Pin location (SMD type) viewed from the upper side of the board.8
Figure 4 – Pin locations (PTH type) viewed from the upper side of the board .9
Table 1 – Dimensions of EFD-cores .6
Table 2 – Effective parameter and A values for EFD-cores.7
min
Table 3 – Main dimensions of coil formers for EFD-cores .7
62317-14 © IEC:2008(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
FERRITE CORES –
DIMENSIONS –
Part 14: EFD-cores for use in power supply applications
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 62317-14 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
The text of this standard is based on the following documents:
FDIS Report on voting
51/934/FDIS 51/938/RVD
Full information on the voting for the approval of this standard can be found in the report on vot
...
IEC 62317-14 ®
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Dimensions –
Part 14: EFD-cores for use in power supply applications
Noyaux ferrites – Dimensions –
Partie 14: Noyaux EFD utilisés dans des applications d’alimentation électrique
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.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.
IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
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
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 62317-14 ®
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Dimensions –
Part 14: EFD-cores for use in power supply applications
Noyaux ferrites – Dimensions –
Partie 14: Noyaux EFD utilisés dans des applications d’alimentation électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
L
CODE PRIX
ICS 29.100.10 ISBN 978-2-88910-669-1
– 2 – 62317-14 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references.5
3 Primary standards.5
3.1 Dimensions of EFD-cores .5
3.1.1 Principal dimensions .5
3.1.2 Effective parameter and A values .7
min
3.2 Main dimensions for coil formers.7
3.3 Pin locations and base outlines.8
3.4 Pin diameter .9
4 Mounting .9
Annex A (informative) EFD–core design .10
Figure 1 – Dimensions of EFD-cores .6
Figure 2 – Main dimensions of coil formers for EFD-cores .7
Figure 3 – Pin location (SMD type) viewed from the upper side of the board.8
Figure 4 – Pin locations (PTH type) viewed from the upper side of the board .9
Table 1 – Dimensions of EFD-cores .6
Table 2 – Effective parameter and A values for EFD-cores.7
min
Table 3 – Main dimensions of coil formers for EFD-cores .7
62317-14 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
FERRITE CORES –
DIMENSIONS –
Part 14: EFD-cores for use in power supply applications
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 62317-14 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This bilingual version, published in 2009-02, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
51/934/FDIS 51/938/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 2.
– 4 – 62317-14 © IEC:2008
A list of all parts of the IEC 62317 series, under the general title Ferrite cores – Dimensions, can
be found on the IEC website.
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.
62317-14 © IEC:2008 – 5 –
FERRITE CORES –
DIMENSIONS –
Part 14: EFD-cores for use in power supply applications
1 Scope
This part of IEC 62317 specifies the dimensions that are of importance for mechanical
interchangeability for a preferred range of EFD-cores, the essential dimensions of coil formers to
be used with them, and the effective parameter values to be used in calculations involving them.
The selection of core sizes for this standard is based on the philosophy of including those sizes
which are industrial standards, either by inclusion in national standards, or by broad-based use in
industry. See IEC 62317-1 for more detail concerning the philosophy of selecting core sizes to be
included.
The general considerations that the design of this range of cores is based upon are given in
Annex A.
2 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 60205, Calculation of the effective parameters of magnetic piece parts
IEC 62317-1, Ferrite cores – Dimensions – Part 1: General specification
3 Primary standards
Compliance with the following requirements ensures mechanical interchangeability of complete
assemblies and wound coil formers.
3.1 Dimensions of EFD-cores
3.1.1 Principal dimensions
The principal dimensions of EFD-cores shall be as given in Figure 1 and Table 1.
– 6 – 62317-14 © IEC:2008
C B C B
F
a F a 2
D D
K K
IEC 1466/08
a
The K dimension designates, with respect to the base level of the core, the difference in height between the base level
of the core and the underside of the centre leg. In the typical case, the underside of the centre leg is above the base
level of the core, and the value of K is positive. In the case that the underside of the centre leg is below the base level
of the core, then the value of K will be negative.
a) EFD 10/5/3, EFD 12/6/3,5 and EFD 15/8/5 b) EFD 20/10/7, EFD 25/13/9 and EFD 30/15/9
Figure 1 – Dimensions of EFD-cores
Table 1 – Dimensions of EFD-cores
a
A B C D E F F K q
1 2
Size
mm mm mm mm mm mm mm mm
mm
EFD 10/5/3 Min. 10,
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.