SIST EN 62317-8:2007

Ferrite cores - Dimensions -- Part 8: E-cores

This part of IEC 62317 specifies the dimensions that are of importance for mechanical interchangeability for E-cores with rectangular cross-section made of ferrite, the dimensions of coil formers to be used with them, and the effective parameter values to be used in calculations involving them. The selecting core sizes to 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.

Ferritkerne - Maße - Teil 8: E-Kerne

Noyaux ferrites - Dimensions -- Partie 8: Noyaux E

Feritna jedra – Mere – 8. del: E-jedra (IEC 62317-8:2006)

General Information

• Status: Published
• Publication Date: 16-Jul-2007
• ICS: 29.100.10 - Magnetic components
• Technical Committee: IMKF - Magnetic components and ferrite materials
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-May-2007
• Due Date: 30-Jul-2007
• Completion Date: 30-May-2007
• Ref Project: EN 62317-8:2006 - Ferrite cores - Dimensions - Part 8: E-cores

Relations

• Replaces: SIST EN 62358:2005 - Ferrite cores - Standard inductance factor (AL) and its tolerance
• Effective Date: 01-Sep-2007
• Replaces: SIST EN 62358:2005 - Ferrite cores - Standard inductance factor (AL) and its tolerance
• Effective Date: 28-Jan-2023
• Revised: SIST EN 62358:2005 - Ferrite cores - Standard inductance factor (AL) and its tolerance
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62317-8:2007
01-september-2007
1DGRPHãþD
SIST EN 62358:2005
Feritna jedra – Mere – 8. del: E-jedra (IEC 62317-8:2006)
Ferrite cores - Dimensions -- Part 8: E-cores (IEC 62317-8:2006)
Ferritkerne - Maße - Teil 8: E-Kerne (IEC 62317-8:2006)
Noyaux ferrites - Dimensions -- Partie 8: Noyaux E (IEC 62317-8:2006)
Ta slovenski standard je istoveten z: EN 62317-8:2006
ICS:
29.100.10 Magnetne komponente Magnetic components
SIST EN 62317-8:2007 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 62317-8

NORME EUROPÉENNE
November 2006
EUROPÄISCHE NORM

ICS 29.100.10 Partly supersedes EN 62358:2004


English version


Ferrite cores -
Dimensions
Part 8: E-cores
(IEC 62317-8:2006)


Noyaux ferrites -  Ferritkerne -
Dimensions Maße
Partie 8: Noyaux E Teil 8: E-Kerne
(CEI 62317-8:2006) (IEC 62317-8:2006)




This European Standard was approved by CENELEC on 2006-10-01. 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 Central Secretariat or to any CENELEC member.

This European Standard exists in two official versions (English and 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
Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62317-8:2006 E

---------------------- Page: 2 ----------------------

EN 62317-8:2006 - 2 -
Foreword
The text of document 51/864/FDIS, future edition 1 of IEC 62317-8, prepared by IEC TC 51, Magnetic
components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 62317-8 on 2006-10-01.
This standard replaces Table A.1 and Table B.1 of EN 62358:2004. New rectangular centre leg E-cores,
which have been developed in the industry, were introduced in EN 62358, and are in widespread use.
This standard has been revised to specify dimensions and effective parameters for these newer
rectangular centre leg E-cores.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62317-8:2006 was approved by CENELEC as a European
Standard without any modification.
__________

---------------------- Page: 3 ----------------------

- 3 - EN 62317-8:2006

Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

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 60205 2006 Calculation of the effective parameters of EN 60205 2006
magnetic piece parts

---------------------- Page: 4 ----------------------

INTERNATIONAL IEC


STANDARD 62317-8





First edition
2006-08


Ferrite cores – Dimensions –
Part 8:
E-cores
 IEC 2006  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: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale P
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

---------------------- Page: 5 ----------------------

– 2 – 62317-8  IEC:2006(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references .5
3 Primary standards .5
3.1 Dimensions of E-cores with rectangular cross-section .5
3.2 Dimensional limits for coil formers .10

Annex A (normative) Derived standards .12
Annex B (normative) An example of a gauge to check the dimensions of E-cores
meeting the IEC primary standard.13


Figure 1 – Dimensions of E-cores with rectangular cross-section.6
Figure 2 – Main dimensions of coil formers .10
Figure B.1 – Gauge dimensions .13

Table 1 – Dimensions of E-cores with rectangular cross-section .6
Table 2 – Effective parameter and A values .8
min
Table 3 – Main dimensions of coil formers .10
Table B.1 – Gauge dimensions .14

---------------------- Page: 6 ----------------------

62317-8  IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FERRITE CORES – DIMENSIONS –

Part 8: E-cores


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 62317-8 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This standard cancels and replaces IEC 61246 published in 1994, its amendment 1 (2002)
and replaces Table A.1 and Table B.1 of IEC 62358:2004. New rectangular centre leg E-cores,
which have been developed in the industry, were introduced in IEC 62358, and are in
widespread use. This standard has been revised to specify dimensions and effective
parameters for these newer rectangular centre leg E-cores.
The text of this standard is based on the following documents:
FDIS Report on voting
51/864/FDIS 51/872/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.

---------------------- Page: 7 ----------------------

– 4 – 62317-8  IEC:2006(E)
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 62317 consists of the following parts, under the general title Ferrite cores – Dimensions:
Part 1: General specification (under consideration)
Part 2: Pot cores (under consideration, currently available as IEC 60133: Dimensions of
pot-cores made of magnetic oxides and associated parts)
Part 3: Half pot cores (under consideration, currently available as IEC 62323: Dimensions
of half pot-cores made of ferrite for inductive proximity switches)
Part 4: RM-cores and associated parts
Part 5: EP-cores (under consideration, currently available as IEC 61596: Magnetic oxide
EP-cores and associated parts for use in inductors and transformers – Dimensions)
Part 6: ETD-cores (under consideration, currently available as IEC 61185: Ferrite cores
(ETD-cores) intended for use in power supply applications – Dimensions)
Part 7: EER-cores
Part 8: E-cores
Part 9: Planar cores
Part 10: PM-cores (under consideration, currently available as IEC 61247: PM-cores made
of magnetic oxides and associated parts – Dimensions)
Part 11: EC-cores (under consideration, currently available as IEC 60647: Dimensions for
magnetic oxide cores intended for use in power supplies (EC-cores))
Part 12: Uncoated ring cores (under consideration, currently available as IEC TR 61604:
Dimensions of uncoated ring cores of magnetic oxides)
Part 13: PQ-cores (under consideration)
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.

---------------------- Page: 8 ----------------------

62317-8  IEC:2006(E) – 5 –
FERRITE CORES – DIMENSIONS –

Part 8: E-cores



1 Scope
This part of IEC 62317 specifies the dimensions that are of importance for mechanical
interchangeability for E-cores with rectangular cross-section made of ferrite, the dimensions
of coil formers to be used with them, and the effective parameter values to be used in
calculations involving them.
The selecting core sizes to 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.
NOTE Cores covered by this standard are intended for general applications at both low and high flux densities,
but they also find uses in special applications such as pulse transformers. They are generally used in pairs.
Whilst the main application of this standard is expected to be for ferrite cores, its validity for iron powder cores
should not be overlooked.
Coil formers are not specified for E-cores smaller than E 8/2, which are also used in SMD assemblies.
The use of “derived” standards, which give a more detailed specification of component parts
whilst still permitting compliance with this standard, is discussed 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 60205:2006, 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 E-cores with rectangular cross-section
3.1.1 Main dimensions
The main dimensions of E-cores with rectangular cross-section shall be as given in Table 1.
NOTE The dimensions of the cores may be checked by means of gauges, an example of which is given in Annex
B. In order to facilitate production it may be necessary to use gauges having dimensions differing from those given
in Annex B, although no relaxation of the requirements for the dimensions of the cores given in Table 1 is thereby
permitted.
3.1.2 Effective parameter and A values
min
The effective parameter and A values of a pair of cores whose dimensions comply with
min
3.1.1 shall be as given in Table 2 (see IEC 60205, for the definitio
...