Soft ferrite material classification

This document specifies classification rules for soft ferrite materials used in inductive
components (inductors and transformers) fulfilling the requirements of the electronic industries.
This document addresses the following issues 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 relating to ferrite;
• establishing uniform benchmarks for suppliers for performance in new development of
The numerical values given in this document are typical values of the parameters (properties) of
the related materials. Direct translation from the material specification into the core specification
is not always easy or possible.
Every detailed material and core specification should be agreed upon between the user and the

Werkstoffeigenschaften von Ferritmaterialien

Classification des matériaux ferrites doux

L'IEC 61332:2016 spécifie les règles de classification pour les matériaux ferrites doux utilisés dans les composants inductifs (inductances et transformateurs) qui satisfont aux exigences des domaines de l’électronique. Le présent document traite des points suivants pour les fournisseurs et les utilisateurs de ferrite:
- références croisées entre matériaux issus de plusieurs fournisseurs;
- aide apportée aux clients pour comprendre les données techniques publiées dans les catalogues lors de la comparaison de plusieurs fournisseurs;
- recommandations aux clients pour le choix du matériau le plus approprié pour chaque application;
- établissement d'une nomenclature pour les normes IEC en rapport avec la ferrite;
- établissement de références uniformes pour les fournisseurs sur la performance du nouveau développement de matériaux.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) rang "c" supprimé de la sous-classe du Tableau 3 à cause d'une densité de perte de puissance trop importante;
b) rang "a-large" ajouté dans les sous-classes PW3, PW4 et PW5 dans le Tableau 3;
c) "B" de la classe PW3 modifié de 100 mT à 200 mT; "B ´ f" et "densité de perte de puissance" ont également été modifiés;
d) "B" de la classe PW4 modifié de 50 mT à 100 mT; "B ´ f" et "densité de perte de puissance" ont également été modifiés.

Klasifikacija mehkoferitnih materialov

Ta dokument določa pravila za klasifikacijo mehkoferitnih materialov, ki se uporabljajo v indukcijskih sestavnih delih (dušilke in transformatorji) ter izpolnjujejo zahteve industrije elektronske opreme.
Ta dokument obravnava naslednja vprašanja za dobavitelje in uporabnike feritov:
• navzkrižno sklicevanje med materiali več dobaviteljev;
• pomoč strankam pri razumevanju objavljenih tehničnih podatkov v katalogih med
primerjavo več dobaviteljev;
• smernice za stranke pri izbiri najprimernejšega materiala za posamezen primer uporabe;
• določitev poimenovanja za standarde IEC v zvezi s feritom;
• določitev enotnih meril za učinkovitost dobaviteljev pri razvoju novih materialov.
Številske vrednosti, podane v tem dokumentu, so tipične vrednosti parametrov (lastnosti) povezanih materialov. Neposreden prevod iz specifikacije materiala v osnovno specifikacijo ni vedno preprost ali mogoč.
Uporabnik in proizvajalec se morata dogovoriti o uporabi vsake podrobne specifikacije materiala in osnovne specifikacije.

General Information

Publication Date
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
Due Date
Completion Date


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Standards Content (Sample)

SIST EN 61332:2017
SIST EN 61332:2006
Klasifikacija mehkoferitnih materialov
Soft ferrite material classification
Werkstoffeigenschaften von Ferritmaterialien
Classification des matériaux ferrites doux
Ta slovenski standard je istoveten z: EN 61332:2017
29.030 Magnetni materiali Magnetic materials
SIST EN 61332:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61332:2017

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SIST EN 61332:2017



February 2017
ICS 29.100.10 Supersedes EN 61332:2005
English Version
Soft ferrite material classification
(IEC 61332:2016)
Classification des matériaux ferrites doux Werkstoffeigenschaften von Ferritmaterialien
(IEC 61332:2016) (IEC 61332:2016)
This European Standard was approved by CENELEC on 2016-12-23. 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 61332:2017 E

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SIST EN 61332:2017
EN 61332:2017
European foreword
The text of document 51/1146/FDIS, future edition 3 of IEC 61332, prepared by IEC/TC 51 "Magnetic
components, ferrite and magnetic powder materials" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 61332:2017.
The following dates are fixed:
(dop) 2017-09-23
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-12-23
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 61332:2005.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61332:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 60401-3:2015 NOTE Harmonized as EN 60401-3:2016 (not modified).

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SIST EN 61332:2017
EN 61332:2017
Annex ZA

Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here:

Publication Year Title EN/HD Year
IEC 60050-221 -  International Electrotechnical - -
Vocabulary (IEV) - Chapter 221:
Magnetic materials and components


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SIST EN 61332:2017

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SIST EN 61332:2017

IEC 61332


Edition 3.0 2016-11



Soft ferrite material classification




ICS 29.100.10 ISBN 978-2-8322-3748-9

  Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission

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SIST EN 61332:2017
– 2 – IEC 61332:2016  IEC 2016
1 Scope . 5
2 Normative references . 5
3 Terms and definitions. 5
4 Classification . 5
4.1 Material classification . 5
4.2 Main classes . 6
4.3 Subclasses . 6
5 Soft ferrite material classes . 6
5.1 Materials used as impedances in interference suppression applications (IS
class) . 6
5.2 Materials used mainly in low flux density applications (B ≤ 5 mT) (SP class) . 7
5.3 Materials used mainly in high flux density applications (PW class) . 8
Bibliography . 10

Table 1 – IS class ferrite materials . 7
Table 2 – SP class ferrite materials . 8
Table 3 – PW class ferrite materials . 9

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SIST EN 61332:2017
IEC 61332:2016  IEC 2016 – 3 –


1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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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, ferrite and magnet

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