Soft ferrite material classification

This International Standard specifies classification rules of soft  ferrite materials used in inductive components (inductors and  transformers) fulfilling the requirements of the electronic  industries. This standard should be considered as a guidance  for the designers of inductive components, allowing them to  make a primary selection of ferrite material. The numerical  values given in this standard are typical values of parameters  (properties) of the related materials.

Werkstoffeigenschaften von Ferritmaterialien

Classification des matériaux ferrites doux

Klasifikacija mehkoferitnih materialov (IEC 61332:2005)

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Standards Content (Sample)

SIST EN 61332:2006
SIST EN 61332:2002
Klasifikacija mehkoferitnih materialov (IEC 61332:2005)
Soft ferrite material classification
Werkstoffeigenschaften von Ferritmaterialien
Classification des matériaux ferrites doux
Ta slovenski standard je istoveten z: EN 61332:2005
29.030 Magnetni materiali Magnetic materials
SIST EN 61332:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61332:2006

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SIST EN 61332:2006

ICS 29.100.10 Supersedes EN 61332:1997

English version

Soft ferrite material classification
(IEC 61332:2005)

Classification des matériaux ferrites doux Werkstoffeigenschaften von
(CEI 61332:2005) Ferritmaterialien
(IEC 61332:2005)

This European Standard was approved by CENELEC on 2005-10-01. 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, 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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

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

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

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61332:2005 E

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SIST EN 61332:2006
EN 61332:2005 - 2 -
The text of document 51/832/FDIS edition 2 of IEC 61332, 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 61332 on 2005-10-01.
This European Standard supersedes EN 61332:1997.
It includes the following significant technical changes with respect to EN 61332:1997.
a) the scope has been reviewed;
b) the column of temperature coefficient of SP class ferrite material has been omitted;
c) the measuring frequency for relative loss factor of SP class has been specified;
d) the parameters of SP class has been coordinated with EN 60401-3.
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) 2006-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-10-01
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 61332:2005 was approved by CENELEC as a European
Standard without any modification.

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SIST EN 61332:2006
- 3 - EN 61332:2005
Annex ZA

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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-221 1990 International electrotechnical vocabulary - -
Chapter 221: Magnetic materials and

IEC 60401-3 2003 Terms and nomenclature for cores made EN 60401-3 2003
of magnetically soft ferrites
Part 3: Guidelines on the format of data
appearing in manufacturers' catalogues of
transformer and inductor cores

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SIST EN 61332:2006

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SIST EN 61332:2006



Second edition

Soft ferrite material classification

 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: Web:
Commission Electrotechnique Internationale G
International Electrotechnical Commission
For price, see current catalogue

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SIST EN 61332:2006
– 2 – 61332  IEC:2005(E)


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 61332 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This second edition cancels and replaces the first edition published in 1995. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
a) the scope has been reviewed;
b) the column of temperature coefficient of SP class ferrite material has been omitted;
c) the measuring frequency for relative loss factor of SP class has been specified;
d) the parameters of SP class has been coordinated with IEC 60401-3.
The text of this standard is based on the following documents:
FDIS Report on voting
51/832/FDIS 51/838/RVD

Full information on the voting for the approval of this standard can be found in

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