IEC 63093-2:2020

Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 2: Pot-cores for use in telecommunications, power supply, and filter applications

IEC 63093-2:2020 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of pot-cores made of ferrite, and the dimensional limits for coil formers to be used with them, as well as the effective parameter values to be used in calculations involving them. It also gives guidelines on the allowable limits of surface irregularities applicable to pot-cores in accordance with the relevant generic specification.
The selection of core sizes and shapes for this document is based on the philosophy of including those sizes which are industrial standards, either by inclusion in a national standard, or by broad-based use in industry. See IEC 62317-1 for more detail concerning the philosophy of selecting core sizes to be included.
The general considerations upon which the design of this range of cores is based are given in Annex A.
This first edition cancels and replaces the first edition of IEC 62317-2 published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition of IEC 62317-2:
a) addition of the limits of surface irregularities;
b) Table 4 and Table 5 are updated in accordance with IEC 60205:2016.

Noyaux ferrite - Lignes directrices relatives aux dimensions et limites des irrégularités de surface - Partie 2: Circuits magnétiques en pots utilisés dans des applications de télécommunications, d'alimentation électrique et de filtre

L'IEC 63093-2:2020 spécifie les dimensions importantes pour l'interchangeabilité mécanique d'une gamme préférentielle de circuits magnétiques en pots en ferrite, les limites dimensionnelles des corps de bobines à utiliser avec ces pots et les valeurs de paramètres efficaces à utiliser dans les calculs les concernant. Elle donne également les lignes directrices relatives aux limites acceptables des irrégularités de surface applicables aux circuits magnétiques en pots conformément à la spécification générique correspondante.
Le choix des tailles et formes de noyau pour le présent document repose sur la philosophie consistant à introduire les tailles qui correspondent à des normes industrielles, soit dans une norme nationale soit par une utilisation à grande échelle dans le secteur industriel. Voir l'IEC 62317-1 pour de plus amples informations relatives à ce principe de choix des tailles de noyau à inclure.
Les considérations générales sur lesquelles s'appuie la conception de cette gamme de noyaux sont données à l'Annexe A.
Cette première édition annule et remplace la première édition de l'IEC 62317-2 parue en 2010. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente de l'IEC 62317-2:
a) ajout des limites des irrégularités de surface;
b) le Tableau 4 et le Tableau 5 sont mis à jour conformément à l'IEC 60205:2016.

General Information

• Status: Published
• Publication Date: 26-Mar-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Drafting Committee: WG 1 - TC 51/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2020
• Completion Date: 27-Mar-2020

Relations

• Replaces: IEC 62317-2:2010 - Ferrite cores - Dimensions - Part 2: Pot-cores for use in telecommunications, power supply, and filter applications
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 63093-2 ®
Edition 1.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 2: Pot-cores for use in telecommunications, power supply, and filter
applications
Noyaux ferrites – Lignes directrices relatives aux dimensions et limites des
irrégularités de surface –
Partie 2: Circuits magnétiques en pots utilisés dans des applications
de télécommunications, d'alimentation électrique et de filtre

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IEC 63093-2 ®
Edition 1.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of surface

irregularities –
Part 2: Pot-cores for use in telecommunications, power supply, and filter

applications
Noyaux ferrites – Lignes directrices relatives aux dimensions et limites des

irrégularités de surface –
Partie 2: Circuits magnétiques en pots utilisés dans des applications

de télécommunications, d'alimentation électrique et de filtre

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-8008-9

– 2 – IEC 63093-2:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Primary dimensions . 7
4.1 Dimensions of pot-cores . 7
4.1.1 General . 7
4.1.2 Principal dimensions . 7
4.1.3 Wire-ways. 9
4.1.4 Effective parameter values . 9
4.2 Main dimensions for coil formers . 10
5 Limits of surface irregularities . 11
5.1 General . 11
5.2 Examples of surface irregularities . 11
5.3 Chips and ragged edges . 12
5.3.1 General . 12
5.3.2 Chips and ragged edges on the mating surfaces . 12
5.3.3 Chips and ragged edges on the other surfaces . 12
5.4 Cracks . 15
5.5 Pull-out, crystallite and pore locations . 16
5.6 Flash . 16
Annex A (informative) Pot-core design . 18
Annex B (informative) Example of gauges to check the dimensions of pot-cores . 19
B.1 General . 19
B.2 Procedure and requirements . 20
Bibliography . 21

Figure 1 – Principal dimensions of pot-cores without back wall slots . 8
Figure 2 – Principal dimensions of pot-cores with back wall slots . 8
Figure 3 – Main dimensions of coil formers for pot-cores . 11
Figure 4 – Examples of surface irregularities . 12
Figure 5 – Chips location for pot-cores . 13
Figure 6 – Cracks location – Top view . 15
Figure 7 – Cracks location – Bottom view . 15
Figure 8 – Pull-out, crystallite and pore locations . 16
Figure 9 – Flash location. 17
Figure B.1 – Dimensions of gauge A . 19
Figure B.2 – Dimensions of gauges B and C . 20

Table 1 – Principal dimensions of pot-cores . 7
Table 2 – Limits for dimensions C and G . 9
Table 3 – Minimum wire-way depth . 9
Table 4 – Effective parameter values for pot-cores with a centre hole . 10
Table 5 – Effective parameter values for pot-cores without a centre hole . 10

Table 6 – Main dimensions of coil formers for pot-cores . 11
Table 7 – Area and length references of irregularities for visual inspection . 14
Table 8 – Limits for cracks . 16
Table A.1 – Ratio of diameter to height . 18
Table B.1 – Dimensions of gauge A . 19
Table B.2 – Dimensions of gauges B and C . 20

– 4 – IEC 63093-2:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –

Part 2: Pot-cores for use in telecommunications,
power supply, and filter applications

FOREWORD
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