EN IEC 61333:2019

SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN 61333:2002
Označevanje feritnih jeder
Marking on ferrite cores
Ta slovenski standard je istoveten z: EN IEC 61333:2019
ICS:
29.100.10 Magnetne komponente Magnetic components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61333

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2019
ICS 29.035; 29.100.10 Supersedes EN 61333:1998 and all of its amendments
and corrigenda (if any)
English Version
Marking on ferrite cores
(IEC 61333:2019)
Marquage des noyaux ferrites Kennzeichnung von Ferritkernen
(IEC 61333:2019) (IEC 61333:2019)
This European Standard was approved by CENELEC on 2019-09-03. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61333:2019 E
European foreword
The text of document 51/1247/CDV, future edition 2 of IEC 61333, 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 IEC 61333:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-06-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-09-03
document have to be withdrawn
This document supersedes EN 61333:1998 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61333:2019 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 60062 NOTE Harmonized as EN 60062

IEC 61333 ®
Edition 2.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Marking on ferrite cores
Marquage des noyaux ferrites
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.030 29.100.10 ISBN 978-2-8322-7247-3

– 2 – IEC 61333:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Marking locations . 5
5 Marking content . 7
5.1 General . 7
5.2 Material identification code . 7
5.3 A value or gap length . 7
L
Bibliography . 9

Figure 1 – Examples of marking locations for U-cores . 5
Figure 2 – Examples of marking locations for E-cores . 6
Figure 3 – Examples of marking locations for ring-cores . 6
Figure 4 – Examples of marking locations for planar-cores . 6
Figure 5 – Examples of marking locations for RM-cores . 6
Figure 6 – Examples of marking locations for PQ-cores . 7
Figure 7 – Examples of marking locations for pot-cores . 7

Table 1 – Examples of the coding of the A value . 8
L
Table 2 – Examples of coding of the gap length . 8

IEC 61333:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARKING ON FERRITE 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 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 a
...