IEC 61185:2005
(Main)Ferrite cores (ETD-cores) intended for use in power supply applications - Dimensions
Ferrite cores (ETD-cores) intended for use in power supply applications - Dimensions
IEC 61185:2005 specifies the dimensions that are of importance for mechanical interchangeability for ETD-cores made of ferrite, 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 (noyaux ETD) destinés à être utilisés dans les alimentations - Dimensions
La CEI 61185:2005 spécifie les dimensions qui revêtent une importance particulière pour l'interchangeabilité mécanique pour les noyaux ETD en ferrite, les dimensions essentielles des carcasses à utiliser avec ces noyaux et les valeurs des paramètres effectifs à utiliser pour les calculs qui s'y rapportent.
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INTERNATIONAL IEC
STANDARD 61185
Second edition
2005-06
Ferrite cores (ETD-cores) intended for use
in power supply applications –
Dimensions
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INTERNATIONAL IEC
STANDARD 61185
Second edition
2005-06
Ferrite cores (ETD-cores) intended for use
in power supply applications –
Dimensions
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
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Commission Electrotechnique Internationale N
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
– 2 – 61185 IEC:2005(E)
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Primary standards .5
3.1 Dimensions of ETD-cores.5
3.2 Dimensional limits for coil formers .5
3.3 Pin locations and base outlines .6
3.4 Pin diameter.6
4 Marking .6
5 Mounting .6
Annex A (normative) Derived standards .11
Annex B (normative) Example of a standard for gauges to check the dimensions of
ETD-cores meeting this primary standard .14
Figure 1 – Dimensions of ETD-cores.6
Figure 2 – Essential dimensions of coil formers .8
Figure 3 – Pin locations and base outlines viewed from the upper-side of the board
(see 3.3) .10
Figure A.1 – Main dimensions.12
Figure B.1 – Gauge dimensions .14
Table 1 – Dimensions of ETD-cores.7
Table 2 – Effective parameter and A values .7
min
Table 3 – Essential dimensions of coil formers.8
Table A.1 – Main dimensions .13
Table B.1 – Gauge dimensions .14
61185 IEC:2005(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
FERRITE CORES (ETD-CORES) INTENDED
FOR USE IN POWER SUPPLY APPLICATIONS –
DIMENSIONS
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 61185 has been prepared by IEC technical committee 51:
Magnetic components and ferrite materials.
This second edition cancels and replaces the first edition published in 1992 and its
amendment 1 (1995).
The main changes with respect to the previous edition consist in combining it with the
amendment.
The text of this standard is based on the following documents:
FDIS Report on voting
51/818FDIS 51/826/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 – 61185 IEC:2005(E)
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 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.
61185 IEC:2005(E) – 5 –
FERRITE CORES (ETD-CORES) INTENDED
FOR USE IN POWER SUPPLY APPLICATIONS –
DIMENSIONS
1 Scope
This International Standard specifies the dimensions that are of importance for mechanical
interchangeability for ETD-cores made of ferrite, the essential dimensions of coil formers to
be used with
...
IEC 61185 ®
Edition 2.0 2005-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores (ETD-cores) Intended for use in power supply applications –
Dimensions
Noyaux ferrites (noyaux ETD) destinés à être utilisés dans les alimentations –
Dimensions
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IEC 61185 ®
Edition 2.0 2005-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores (ETD-cores) Intended for use in power supply applications –
Dimensions
Noyaux ferrites (noyaux ETD) destinés à être utilisés dans les alimentations –
Dimensions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX N
ICS 29.100.10 ISBN 978-2-83220-708-6
– 2 – 61185 IEC:2005
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Primary standards . 5
3.1 Dimensions of ETD-cores . 5
3.2 Dimensional limits for coil formers . 5
3.3 Pin locations and base outlines . 6
3.4 Pin diameter . 6
4 Marking . 6
5 Mounting . 6
Annex A (normative) Derived standards . 11
Annex B (normative) Example of a standard for gauges to check the dimensions of
ETD-cores meeting this primary standard . 14
Figure 1 – Dimensions of ETD-cores . 6
Figure 2 – Essential dimensions of coil formers . 8
Figure 3 – Pin locations and base outlines viewed from the upper-side of the board
(see 3.3) . 10
Figure A.1 – Main dimensions . 12
Figure B.1 – Gauge dimensions . 14
Table 1 – Dimensions of ETD-cores . 7
Table 2 – Effective parameter and A values . 7
min
Table 3 – Essential dimensions of coil formers. 8
Table A.1 – Main dimensions . 13
Table B.1 – Gauge dimensions . 14
61185 IEC:2005 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
FERRITE CORES (ETD-CORES) INTENDED
FOR USE IN POWER SUPPLY APPLICATIONS –
DIMENSIONS
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 61185 has been prepared by IEC technical committee 51:
Magnetic components and ferrite materials.
This second edition cancels and replaces the first edition published in 1992 and its
amendment 1 (1995).
The main changes with respect to the previous edition consist in combining it with the
amendment.
This bilingual version (2013-05) corresponds to the monolingual English version, published in
2005-06.
– 4 – 61185 IEC:2005
The text of this standard is based on the following documents:
FDIS Report on voting
51/818FDIS 51/826/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.
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.
61185 IEC:2005 – 5 –
FERRITE CORES (ETD-CORES) INTENDED
FOR USE IN POWER SUPPLY APPLICATIONS –
DIMENSIONS
1 Scope
This International Standard specifies the dimensions that are of importance for mechanical
interchangeability for ETD-cores made of ferrite, the essential dimensions of coil formers to
be used with them, and the effective parameter values to be used in calculations involving
them.
NOTE 1 Whilst this standard mainly applies to ferrite, its validity for iron powder cores should not be overlooked.
NOTE 2 The cores covered by this standard are designed for use in power transformers and chokes operating at
high flux density and generally at frequencies higher than those feasible with EC-cores of the same material, due
to a core proportioning more suitable for high-frequency applications. They are generally used in pairs.
The use of “derived” standards which give more detailed specifications of component parts
whilst still permitting compliance with this standard is discussed in Annex A, which also
contains an example of a derived standard for coil formers.
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 normative document (including any amendments) applies.
IEC 60205:2001, Calculation of the effective parameters of magnetic piece parts
3 Primary standards
Compliance with the following requirements ensures mechanical interchangeability of
complete assemblies and coil formers.
3.1 Dimensions of ETD-cores
3.1.1 Principal dimensions
The princi
...
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