IEC 62317-13:2008

IEC 62317-13
Edition 1.0 2008-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Dimensions –
Part 13: PQ-cores for use in power supply applications

Noyaux ferrites – Dimensions –
Partie 13: Noyaux PQ utilisés dans des applications d’alimentation électrique

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IEC 62317-13
Edition 1.0 2008-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Ferrite cores – Dimensions –
Part 13: PQ-cores for use in power supply applications

Noyaux ferrites – Dimensions –
Partie 13: Noyaux PQ utilisés dans des applications d’alimentation électrique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 29.100.10 ISBN 978-2-88910-668-4
– 2 – 62317-13 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references.5
3 Primary standards.5
3.1 Dimensions of PQ-cores .5
3.1.1 Principal dimensions .5
3.1.2 Effective parameter and A values .5
min
3.2 Dimensional limits for coil formers .6
3.3 Pin locations and base outlines.6
3.4 Pin diameter .6
4 Mounting .6
5 Main dimensions for coil formers.10
Annex A (informative) PQ-core design.12
Annex B (normative) An example of a gauge to check the dimensions of PQ-cores
meeting the IEC primary standard .13
Annex C (normative) Revised PQ-cores formulas in IEC 60205 Ed.3 Clause 3 .14

Figure 1 – Dimensions of PQ-cores .6
Figure 2 – Dimensions of low-profile PQI-cores .8
Figure 3 – Main dimensions of coil formers for PQ-cores .10
Figure 4 – Pin locations and base outlines viewed from the upper side of the board .11
Figure B.1 – Gauge dimensions.13
Figure C.1 – Dimensions, areas and mean lengths of flux path .14
Figure C.2 – Elemental radius and radius vector extends from F/2 to E/2 for the entire
circle.15

Table 1 – Dimensions of PQ-cores .7
Table 2 – Dimensions of low-profile PQI-cores .8
Table 3 – Effective parameter and A values for PQ-cores .9
min.
Table 4 – Effective parameter and A values for low-profile PQ-cores .9
min.
Table 5 – Main dimensions of coil formers for PQ-cores .10
Table B.1 – Gauge dimensions.13

62317-13 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES –
DIMENSIONS –
Part 13: PQ-cores for use in power supply applications

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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 62317-13 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This bilingual version, published in 2008-09, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
51/910/FDIS 51/925/RVD
Full information on the voting for the approval of this standard can be found in the report on voting
indicated in the above table.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62317-13 © IEC:2008
A list of all parts of the IEC 62317 series, under the general title Ferrite cores – Dimensions, can
be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62317-13 © IEC:2008 – 5 –
FERRITE CORES –
DIMENSIONS –
Part 13: PQ-cores for use in power supply applications

1 Scope
This part of IEC 62317 specifies the dimensions that are of importance for mechanical
interchangeability for a preferred range of PQ-cores and low-profile PQI-cores made of ferrite,
and the locations of their terminal pins on a 2,54 mm printed wiring grid in relation to the base
outlines of the cores.
The selection of core sizes for this standard 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 that the design of this range of cores is based upon are given in
Annex A.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60205, Calculation of the effective parameters of magnetic piece parts
IEC 62317-1, Ferrite cores – Dimensions – Part 1: General specification
3 Primary standards
Co
...