IEC 62024-2:2008

IEC 62024-2 ®
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High frequency inductive components – Electrical characteristics and measuring
methods –
Part 2: Rated current of inductors for DC to DC converters

Composants inductifs à haute fréquence – Caractéristiques électriques et
méthodes de mesure –
Partie 2: Courant assigné des bobines d’induction pour des convertisseurs
continus-continus
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IEC 62024-2 ®
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High frequency inductive components – Electrical characteristics and measuring
methods –
Part 2: Rated current of inductors for DC to DC converters

Composants inductifs à haute fréquence – Caractéristiques électriques et
méthodes de mesure –
Partie 2: Courant assigné des bobines d’induction pour des convertisseurs
continus-continus
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
Q
CODE PRIX
ICS 29.100.10 ISBN 978-2-88910-608-0
– 2 – 62024-2 © IEC:2008
CONTENTS
FOREWORD.3

1 Scope.5

2 Normative references .5

3 Terms and definitions .5

4 Standard atmospheric conditions.6

4.1 Standard atmospheric conditions for testing .6

4.2 Reference conditions.6

5 Measuring method of DC saturation limited current.6
5.1 General .6
5.2 Test conditions.6
5.3 Measurement circuit and calculation.7
5.4 Attachment jig of inductor.8
5.5 Measuring method.8
5.6 Quality conformance inspection.8
6 Measuring method of temperature rise limited current .8
6.1 General .8
6.2 Test conditions.9
6.3 Measurement jig.9
6.3.1 Printed-wiring board method.9
6.3.2 Lead wire method .11
6.4 Measuring method and calculation .12
6.4.1 Resistance-substitution method .12
6.4.2 Thermo-couple method.13
6.5 Quality conformance inspection.14
7 Determination of rated current .14
8 Information to be given in the detail specification.14
8.1 Measuring method of DC saturation limited current .14
8.2 Measuring method of temperature rise limited current .15
Annex A (informative) Example of recommended description on product specification
sheets and catalogues .16

Figure 1 – Inductance measurement circuit under application of DC saturation

condition.
Figure 2a) – Example of printed-wiring board for SMD type .10
Figure 2b) – Example of printed-wiring board for leaded type.11
Figure 2 – Example of printed-wiring board.11
Figure 3 – Temperature rise measurement circuit by resistance substitution method.12
Figure 4 – Temperature rise measurement circuit by thermo-couple method .13

Table 1 – Width of circuits .9
Table 2 – Wire size of circuits .12

62024-2 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HIGH FREQUENCY INDUCTIVE COMPONENTS –

ELECTRICAL CHARACTERISTICS AND MEASURING METHODS –

Part 2: Rated current of inductors for DC to DC converters

FOREWORD
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International Standard IEC 62024-2 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This bilingual version, published in 2009-02, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
51/937/FDIS 51/941/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 – 62024-2 © IEC:2008
A list of all parts of IEC 62024 series, under the general title High frequency inductive

components – Electrical characteristics and measuring methods, 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 un
...