Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 6: ETD-cores for use in power supplies

IEC 63093-6:2018(E) specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of ETD-cores made of ferrite and the essential dimensions of coil formers to be used with them, as well the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to ETD-cores.
The specifications contained in this document are useful in negotiations between ferrite core manufacturers and users about surface irregularities. The use of derived standards which give more detailed specifications of component parts while still permitting compliance with this document is discussed in  REF _Ref506796608 \r \h Annex A 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003500300036003700390036003600300038000000 .
This edition includes the following significant technical changes with respect to IEC 62317-­6:2015 and IEC 60424-3:2015:
a. This document integrates IEC 62317-6:2015 and IEC 60424-3:2015;
b. Table 1 – Allowable areas of chips for ETD-cores, of IEC 60424-3:2015, has been moved to Annex C (informative) of this document.

General Information

Status
Published
Publication Date
26-Jun-2018
Current Stage
PPUB - Publication issued
Completion Date
27-Jun-2018
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IEC 63093-6
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
Ferrite cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 6: ETD-cores for use in power supplies
IEC 63093-6:2018-06(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 63093-6
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
Ferrite cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 6: ETD-cores for use in power supplies
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-5834-7

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 63093-6:2018 © IEC 2018
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 ETD-cores ....................................................................................... 7

4.2.1 Principal dimensions ...................................................................................... 7

4.2.2 Effective parameter and A values .............................................................. 7

min

4.3 Dimensional limits for coil formers........................................................................... 8

4.4 Pin locations and base outlines ............................................................................... 9

4.5 Pin diameter ......................................................................................................... 12

5 Marking ......................................................................................................................... 12

6 Mounting ....................................................................................................................... 12

7 Limits of surface irregularities ........................................................................................ 12

7.1 General ................................................................................................................. 12

7.2 Examples of surface irregularities ......................................................................... 12

7.3 Chips and ragged edges ....................................................................................... 13

7.3.1 General........................................................................................................ 13

7.3.2 Chips and ragged edges on the mating surfaces .......................................... 13

7.3.3 Chips and ragged edges on the other surfaces ............................................ 13

7.4 Cracks .................................................................................................................. 16

7.5 Flash .................................................................................................................... 16

7.6 Pull-outs ............................................................................................................... 16

7.7 Crystallites ............................................................................................................ 17

7.8 Pores .................................................................................................................... 18

Annex A (normative) Derived standards ............................................................................... 19

Annex B (normative) Example of dimensions for gauges to check the dimensions of

ETD-cores complying with this document .............................................................................. 22

B.1 General ................................................................................................................. 22

B.2 Procedure and requirements ................................................................................. 22

Annex C (informative) Reference of allowable areas of chips ............................................... 23

Bibliography .......................................................................................................................... 24

Figure 1 – Dimensions of ETD-cores ....................................................................................... 7

Figure 2 – Essential dimensions of coil formers ...................................................................... 8

Figure 3 – Pin locations and base outlines viewed from the upper-side of the board ............. 10

Figure 4 – Examples of surface irregularities ........................................................................ 13

Figure 5 – Chip location for ETD-cores ................................................................................. 14

Figure 6 – Crack and pull-out locations for ETD-cores .......................................................... 16

Figure 7 – Crystallite location for ETD-cores ......................................................................... 17

Figure 8 – Pore location for ETD-cores ................................................................................. 18

Figure A.1 – Main dimensions of coil formers ........................................................................ 20

Figure B.1 – Gauge dimensions ............................................................................................ 22

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IEC 63093-6:2018 © IEC 2018 – 3 –

Table 1 – Dimensions of ETD-cores ........................................................................................ 7

Table 2 – Effective parameter and A values ........................................................................ 8

min

Table 3 – Dimensional limits for coil formers ........................................................................... 9

Table 4 – Area and length reference for visual inspection ..................................................... 15

Table 5 – Limits for cracks .................................................................................................... 17

Table A.1 – Main dimensions of coil formers ......................................................................... 21

Table B.1 – Gauge dimensions ............................................................................................. 22

Table C.1 – Allowable areas of chips for ETD-cores .............................................................. 23

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– 4 – IEC 63093-6:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –
Part 6: ETD-cores for use in power supplies
FOREWORD

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indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 63093-6 has been prepared by IEC technical committee 51:

Magnetic components, ferrite and magnetic powder materials.

This first edition cancels and replaces the first edition of IEC 62317-6 published in 2015 and

the second edition of IEC 60424-3 published in 2015. This edition constitutes a technical

revision.

This edition includes the following significant technical changes with respect to

IEC 62317-6:2015 and IEC 60424-3:2015:
a) This document integrates IEC 62317-6:2015 and IEC 60424-3:2015;

b) Table 1 – Allowable areas of chips for ETD-cores, of IEC 60424-3:2015, has been moved

to Annex C (informative) of this document.
---------------------- Page: 6 ----------------------
IEC 63093-6:2018 © IEC 2018 – 5 –
The text of this standard is based on the following documents:
CDV Report on voting
51/1215/CDV 51/1234/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 document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 7 ----------------------
– 6 – IEC 63093-6:2018 © IEC 2018
FERRITE CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –
Part 6: ETD-cores for use in power supplies
1 Scope

This part of IEC 63093 specifies the dimensions that are of importance for mechanical

interchangeability for a preferred range of ETD-cores made of ferrite and the essential

dimensions of coil formers to be used with them, as well the effective parameter values to be

used in calculations involving them. It also gives guidelines on allowable limits of surface

irregularities applicable to ETD-cores.

The specifications contained in this document are useful in negotiations between ferrite core

manufacturers and users about surface irregularities.

The use of derived standards which give more detailed specifications of component parts

while still permitting compliance with this document is discussed in Annex A.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this
...

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