IEC 63093-1:2020

IEC 63093-1 ®
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of
surface irregularities –
Part 1: General specification
Noyaux ferrites – Lignes directrices relatives aux dimensions
et aux limites des irrégularités de surface –
Partie 1: Spécification générale

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IEC 63093-1 ®
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of

surface irregularities –
Part 1: General specification
Noyaux ferrites – Lignes directrices relatives aux dimensions

et aux limites des irrégularités de surface –

Partie 1: Spécification générale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-8079-9

– 2 – IEC 63093-1:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Dimension descriptions . 7
5 Location and functions of core parts and surfaces . 7
5.1 General . 7
5.2 Mating surfaces . 8
5.3 Centre post . 8
5.4 Outer legs . 8
5.5 Back, bottom surface and back surfaces . 8
5.6 Wire-slot area . 8
5.7 Wire-way area . 9
5.8 Clamping recess area . 9
6 Area and length reference for visual inspection . 9
7 Examples of surface irregularities . 11
8 Limits of surface irregularities . 11
8.1 General . 11
8.2 Chips and ragged edges . 11
8.3 Cracks . 11
8.4 Flash . 11
8.5 Pull-outs . 12
8.6 Pores . 12
8.7 Crystallites . 12
Annex A (informative) IEC 63093 series . 13
Bibliography . 14

Figure 1 – Location of main core parts and surfaces – Example of RM-core type . 8
Figure 2 – Examples of surface irregularities . 11

Table 1 – Area and length reference for visual inspection . 10
Table A.1 – IEC 63093 series . 13

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES –
GUIDELINES ON DIMENSIONS AND
THE LIMITS OF SURFACE IRREGULARITIES –

Part 1: General specification
FOREWORD
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International Standard IEC 63093-1 has been prepared by IEC technical committee 51:
Magnetic components, ferrite and magnetic powder materials.
This first edition cancels and replaces the second edition of IEC 60424-1 published in 2015
and the first edition of IEC 62317-1 published in 2007. This edition constitutes a technical
revision.
This edition includes the following significant technical changes with respect to the previous
editions of IEC 60424-1 and IEC 62317-1:
a) this document integrates IEC 60424-1 and IEC 62317-1.

– 4 – IEC 63093-1:2020 © IEC 2020
The text of this International Standard is based on the following documents:
CDV Report on voting
51/1309/CDV 51/1327/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 63093 series, published under the general title Ferrite cores –
Guidelines on dimensions and the limits of surface irregularities, can be found on the IEC
website.
The committee has decided that the contents of this do
...