EN IEC 63093-14:2019

SLOVENSKI STANDARD
01-september-2019
Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti -
14. del: EFD-jedra
Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 14:
EFD-cores
Ta slovenski standard je istoveten z: EN IEC 63093-14:2019
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 63093-14

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 29.100.10 Supersedes EN 62317-14:2008
English Version
Ferrite cores - Guidelines on dimensions and the limits of
surface irregularities - Part 14: EFD-cores
(IEC 63093-14:2019)
Noyaux ferrites - Lignes directrices relatives aux Ferritkerne - Richtlinien zu Maßen und Grenzen von
dimensions et aux limites des irrégularités de surface - Oberflächenbeschädigungen - Teil 14: EFD-Kerne
Partie 14: Noyaux EFD (IEC 63093-14:2019)
(IEC 63093-14:2019)
This European Standard was approved by CENELEC on 2019-05-09. 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: 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 63093-14:2019 E

European foreword
The text of document 51/1272A/FDIS, future edition 1 of IEC 63093-14, 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 63093-14:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-09
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-09
document have to be withdrawn
This document supersedes EN 62317-14:2008.
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 63093-14:2019 was approved by CENELEC as a European
Standard without any modification.

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 -  Calculation of the effective parameters of magnetic EN 60205 -
piece parts
IEC 60401 -  Ferrite materials - Guide on the format of data - -
appearing in manufacturers' catalogues of
transformer and inductor cores
IEC 60424-1 -  Ferrite cores - Guidelines on the limits of surface EN 60424-1 -
irregularities - Part 1: General specification

IEC 63093-14 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of surface irregularities –

Part 14: EFD-cores
Noyaux ferrites – Lignes directrices relatives aux dimensions et aux limites des

irrégularités de surface –
Partie 14: Noyaux EFD
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-6764-6

– 2 – IEC 63093-14:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Primary dimensions . 7
4.1 General . 7
4.2 Dimensions of EFD-cores . 7
4.2.1 Principal dimensions . 7
4.2.2 Effective parameter and A values . 8
min
4.3 Dimensional limits for coil formers. 8
4.4 Locations of pins and base outlines . 9
4.5 Pin diameter . 12
5 Mounting . 12
6 Definitions and limits of surface irregularities . 12
6.1 General . 12
6.2 Examples of surface irregularities . 12
6.3 Chips and ragged edges . 12
6.3.1 General . 12
6.3.2 Chips and ragged edges located on the mating surface . 12
6.3.3 Chips and ragged edges located on other surfaces . 13
6.4 Cracks . 15
6.5 Pull-out . 16
6.6 Crystallites . 16
6.7 Flash . 16
6.8 Pores . 17
Annex A (informative) EFD-core design . 18
Annex B (informative) Limits for allowable chipping areas . 19

Figure 1 – Dimensions of EFD-cores . 7
Figure 2 – Main dimensions of coil formers for EFD-cores . 8
Figure 3 – Locations of pins (SMD type) viewed from the upper side of the board . 10
Figure 4 – Locations of pins (PTH type) viewed from the upper side of the board . 11
Figure 5 – Examples of surface irregularities . 12
Figure 6 – Locations of chips and ragged edges . 13
Figure 7 – Locations of cracks . 15
Figure 8 – Location of pull-out . 16
Figure 9 – Location of crystallite . 16
Figure 10 – Location of flash . 17
Figure 11 – Location of pore . 17

IEC 63093-14:2019 © IEC 2019 – 3 –
Table 1 – Dimensions of EFD-cores . 7
Table 2 – Effective parameter and A values for EFD-cores . 8
min
Table 3 – Dimensional limits of coil formers for EFD-cores . 9
Table 4 – Area and length reference of irregularities for visual inspection . 14
Table 5 – Limits for cracks . 15
Table B.1 – Limits for allowable chipping areas. 19

– 4 – IEC 63093-14:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES –
GUIDELINES ON DIMENSIONS AND
THE LIMITS OF SURFACE IRREGULARITIES –

Part 14: EFD-cores
FOREWORD
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