IEC 61332:2005

INTERNATIONAL IEC
STANDARD 61332
Second edition
2005-09
Soft ferrite material classification

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INTERNATIONAL IEC
STANDARD 61332
Second edition
2005-09
Soft ferrite material classification

 IEC 2005  Copyright - all rights reserved
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– 2 – 61332  IEC:2005(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

SOFT FERRITE MATERIAL CLASSIFICATION

FOREWORD
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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
edition:
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 the report on voting
indicated in the above table.
61332  IEC:2005(E) – 3 –
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• withdrawn;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.

– 4 – 61332  IEC:2005(E)
SOFT FERRITE MATERIAL CLASSIFICATION

1 Scope
This International Standard specifies classification rules for soft ferrite materials used in inductive
components (inductors and transformers) fulfilling the requirements of the electronic industries.
This standard addresses the following purposes for ferrite suppliers and users:
– cross-reference between materials from multiple suppliers;
– assistance to customers in understanding the published technical data in catalogues when
comparing multiple suppliers;
– guidance to customers in selecting the most applicable material for each application;
– setting of nomenclature for IEC standards relatin
...