IEC 63093-10:2022

IEC 63093-10 ®
Edition 1.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 10: PM-cores and associated parts

Noyaux ferrites – Lignes directrices relatives aux dimensions et aux limites des
irrégularités de surface –
Partie 10: Noyaux PM et parties associées

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IEC 63093-10 ®
Edition 1.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Guidelines on dimensions and the limits of surface

irregularities –
Part 10: PM-cores and associated parts

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

irrégularités de surface –
Partie 10: Noyaux PM et parties associées

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-1100-6

– 2 – IEC 63093-10:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Primary dimensions . 6
4.1 General . 6
4.2 Dimensions of PM-cores . 7
4.2.1 Principal dimensions . 7
4.2.2 Effective parameter and A values . 8
min
4.3 Main dimensions of coil formers . 8
4.4 Pin locations and base outlines . 9
4.5 Pin diameter . 9
5 Mounting hardware . 9
6 Limits of surface irregularities . 10
6.1 General . 10
6.2 Examples of surface irregularities . 10
6.3 Chips and ragged edges . 11
6.3.1 General . 11
6.3.2 Chips and ragged edges located on the mating surface . 11
6.3.3 Chips and ragged edges located on other surfaces . 12
6.4 Cracks . 12
6.5 Pull-out . 13
6.6 Crystallites . 14
6.7 Flash . 14
6.8 Pores . 15
Annex A (normative) Derived standards . 16
Annex B (normative) Example of a gauge to check the coil former space dimensions of
PM‑cores meeting the IEC primary standard . 17
Annex C (informative) Recommended main dimensions for mounting hardware . 18
Annex D (informative) Limits of allowable chipping areas . 20

Figure 1 – Main dimensions of PM-cores . 7
Figure 2 – Main dimensions of coil formers . 8
Figure 3 – Pin locations and base outlines viewed from the underside of the board . 10
Figure 4 – Examples of surface irregularities . 11
Figure 5 – Chips on mating surfaces . 12
Figure 6 – Locations of cracks . 13
Figure 7 – Location of pull-out . 14
Figure 8 – Location of a crystallite . 14
Figure 9 – Location of a flash . 15
Figure 10 – Location of pore . 15
Figure B.1 – Example of a gauge . 17
Figure C.1 – Main dimensions of mounting hardware . 18

Table 1 – Main dimensions of PM-cores . 7
Table 2 – Effective parameter and A values . 8
min
Table 3 – Main dimensions of coil formers . 9
Table 4 – Limits for cracks . 13
Table B.1 – Example of a gauge . 17
Table C.1 – Main dimensions of U-bolt . 18
Table C.2 – Main dimensions of base plate . 19
Table D.1 – Limits of allowable chipping areas. 20

– 4 – IEC 63093-10:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –

Part 10: PM-cores and associated parts

FOREWORD
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...