EN IEC 63093-9:2020

Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 9: Planar cores

IEC 63093-9:2020 specifies the shapes and dimensions of ferrite cores for inductive components (transformers and chokes), whose the coil is typically made of multi-layer boards (or the coil is part of the motherboard), and the effective parameter values used in calculations. This document gives guidelines on allowable limits of surface irregularities applicable to planar-cores as well. This document is considered as a sectional specification useful in the negotiation between ferrite core suppliers and users about surface irregularities. This first edition cancels and replaces the first edition of IEC 60424-5 published in 2009 and first edition of IEC 62317-9 published in 2006 and its Amendment 1:2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions of IEC 60424-5 and IEC 62317-9: a) IEC 63093-9 integrates IEC 60424-5 and IEC 62317-9; b) Table 1, Table 2 and Table 3 in IEC 60424-5:2009 have been moved to Annex B; c) some numbers are corrected in Table 4; d) Table 6 is amended following IEC 60205.

Ferritkerne – Richtlinien zu Maßen und Grenzen von Oberflächenbeschädigungen - Teil 9: Planarkerne

Noyaux ferrites - Lignes directrices relatives aux dimensions et aux limites des irrégularités de surface - Partie 9: Noyaux planaires

L’IEC 63093-9:2020 spécifie les formes et dimensions des noyaux ferrites pour les composants inductifs (transformateurs et inductances) dont la bobine est généralement composée de la carte multicouche (ou la bobine fait partie de la carte mère) et des valeurs de paramètres effectifs utilisés dans les calculs. Le présent document donne des lignes directrices relatives aux limites admissibles des irrégularités de surface applicables également aux noyaux planaires. Le présent document est considéré comme une spécification intermédiaire utile dans les négociations entre les fournisseurs de noyaux ferrites et leurs utilisateurs portant sur les irrégularités de surface. Cette première édition annule et remplace la première édition de l’IEC 60424-5 parue en 2009 et la première édition de l’IEC 62317-9 parue en 2006 et son Amendement 1:2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport aux éditions précédentes de l’IEC 60424-5 et l’IEC 62317-9: a) l’IEC 63093-9 réunit l’IEC 60424-5 et l’IEC 62317-9; b) le Tableau 1, le Tableau 2 et le Tableau 3 contenus dans l’IEC 60424-5:2009 ont été déplacés vers l’Annexe B; c) certains chiffres du Tableau 4 sont corrigés; d) le Tableau 6 est modifié sur la base de l’IEC 60205.

Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti - 9. del: Planarna jedra

General Information

• Status: Withdrawn
• Publication Date: 11-Jun-2020
• ICS: 29.100.10 - Magnetic components
• Technical Committee: CLC/SR 51 - Magnetic components and ferrite materials
• Drafting Committee: IEC/TC 51 - IEC_TC_51
• Ref Project: SIST EN IEC 63093-9:2020 - Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 9: Planar cores

Relations

• Replaces: EN 60424-5:2009 - Ferrite cores - Guide on the limits of surface irregularities - Part 5: Planar-cores
• Effective Date: 26-Jan-2023
• Replaces: EN 62317-9:2006/A1:2007 - Ferrite cores - Dimensions - Part 9: Planar cores
• Effective Date: 16-Jun-2020
• Replaces: EN 62317-9:2006 - Ferrite cores - Dimensions - Part 9: Planar cores
• Effective Date: 16-Jun-2020

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2020
Nadomešča:
SIST EN 60424-5:2009
SIST EN 62317-9:2007
SIST EN 62317-9:2007/A1:2007
Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti -
9. del: Planarna jedra
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 9:
Planar cores
Ta slovenski standard je istoveten z: EN IEC 63093-9:2020
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 63093-9

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 29.100.10 Supersedes EN 60424-5:2009, EN 62317-9:2006 and all
of its amendments and corrigenda (if any)
English Version
Ferrite cores - Guidelines on dimensions and the limits of
surface irregularities - Part 9: Planar cores
(IEC 63093-9:2020)
Noyaux ferrites - Lignes directrices relatives aux Ferritkerne - Richtlinien zu Maßen und Grenzen von
dimensions et aux limites des irrégularités de surface - Oberflächenbeschädigungen - Teil 9: Planarkerne
Partie 9: Noyaux planaires (IEC 63093-9:2020)
(IEC 63093-9:2020)
This European Standard was approved by CENELEC on 2020-05-21. 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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63093-9:2020 E

European foreword
The text of document 51/1308/CDV, future edition 1 of IEC 63093-9, 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 63093-9:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-02-21
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-21
document have to be withdrawn
This document supersedes EN 60424-5:2009 and EN 62317-9:2006 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 63093-9:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60424-5:2009 NOTE Harmonized as EN 60424-5:2009 (not modified)
IEC 63093-4 NOTE Harmonized as EN IEC 63093-4

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where 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:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60205 2016 Calculation of the effective parameters of EN 60205 2017
magnetic piece parts
IEC 60401-1 - Terms and nomenclature for cores made of - -
magnetically soft ferrites - Part 1: Terms used
for physical irregularities and reference of
dimensions
IEC 60424-1 - Ferrite cores - Guidelines on the limits of EN 60424-1 -
surface irregularities - Part 1: General
specification
IEC 63093-9 ®
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of

surface irregularities –
Part 9: Planar-cores
Noyaux ferrites – Lignes directrices relatives aux dimensions

et aux limites des irrégularités de surface –

Partie 9: Noyaux planaires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-8080-5

– 2 – IEC 63093-9:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Primary dimensions . 7
4.1 Planar shapes and dimensions . 7
4.2 Dimensions and effective parameters of planar EL-core and mating PLT-core . 8
4.3 Dimensions and effective parameters of low-profile E-core and mating PLT-
core . 10
4.4 Dimensions and effective parameters of low-profile ER-core and mating
PLT-core . 12
5 Limits of surface irregularities . 15
5.1 General . 15
5.2 Examples of surface irregularities . 16
5.3 Chips and ragged edges . 17
5.3.1 General . 17
5.3.2 Chips and ragged edges on the mating surfaces . 17
5.3.3 Chips and ragged edges on other surfaces . 18
5.4 Cracks . 20
5.5 Flash . 20
5.6 Pull-outs . 20
5.7 Crystallites . 24
5.8 Pores . 24
Annex A (normative) Low-profile core design . 26
A.1 General design . 26
A.2 EL-core design . 26
A.3 ER-core design . 27
Annex B (informative) Reference values of allowable areas of chips . 29
Bibliography . 31

Figure 1 – Planar EL-core and mating PLT-core. 8
Figure 2 – Low-profile E-core and mating PLT-core . 10
Figure 3 – Low-profile ER-core and mating PLT-core . 12
Figure 4 – Examples of surface irregularities for planar EL-core . 16
Figure 5 – Examples of surface irregularities for low-profile E-core . 16
Figure 6 – Examples of surface irregularities for low-profile ER-core. 16
Figure 7 – Chip location for planar EL-core . 17
Figure 8 – Chip location for low-profile E-core . 17
Figure 9 – Chip location for low-profile ER-core . 17
Figure 10 – Cracks and pull-out location for planar EL-core . 20
Figure 11 – Cracks and pull-out location for low-profile E-core . 21
Figure 12 – Cracks and pull-out location for low-profile ER-core . 21
Figure 13 – Reference dimensions for EL-core . 21

IEC 63093-9:2020 © IEC 2020 – 3 –
Figure 14 – Reference dimensions for E-core . 22
Figure 15 – Reference dimensions for ER-core . 23
Figure 16 – Example of the location of a crystallite on planar EL-core . 24
Figure 17 – Example of the location of a crystallite on low-profile E-core . 24
Figure 18 – Example of the location of a crystallite on low-profile ER-core . 24
Figure 19 – Example of the location of a pore on planar EL-core . 25
Figure 20 – Example of the location of a pore on low-profile E-core . 25
Figure 21 – Example of the location of a pore on low-profile ER-core . 25

Table 1 – Dimensions of planar EL-core EL and mating PLT-core . 9
Table 2 – Effective parameter values and A values . 10
min
Table 3 – Dimensions of low-profile E-core and mating PLT-core . 11
Table 4 – Effective parameter values and A values . 12
min
Table 5 – Dimensions of low-profile ER-core and mating PLT-core . 13
Table 6 – Effective parameter values and A values . 14
min
Table 7 – Area and length reference for visual inspection . 19
Table 8 – Limits of cracks for planar EL-core . 22
Table 9 – Limits of cracks for low-profile E-core . 23
Table 10 – Limits of cracks for low-profile ER-core . 23
Table A.1 – Sizes and design ratios for ER-core . 28
Table B.1 – Allowable areas of chips for planar EL-core . 29
Table B.2 – Allowable areas of chips for low-profile E-core . 29
Table B.3 – Allowable areas of chips for low-profile ER-core. 30

– 4 – IEC 63093-9:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – GUIDELINES ON DIMENSIONS AND
THE LIMITS OF SURFACE IRREGULARITIES –

Part 9: Planar-cores
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide orga
...