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IEC 62024-2
Edition 2.0 2020-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High frequency inductive components – Electrical characteristics and measuring
methods –
Part 2: Rated current of inductors for DC-to-DC converters
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IEC 62024-2
Edition 2.0 2020-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High frequency inductive components – Electrical characteristics and measuring
methods –
Part 2: Rated current of inductors for DC-to-DC converters
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.100.10 ISBN 978-2-8322-8136-9
– 2 – IEC 62024-2:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Standard atmospheric conditions . 7
4.1 Standard atmospheric conditions for testing . 7
4.2 Reference conditions . 7
5 Measuring method of DC saturation limited current . 7
5.1 General . 7
5.2 Test conditions . 7
5.3 Measurement Measuring circuit and calculation . 8
5.3.1 Measuring circuit . 8
5.3.2 Calculation . 8
5.4 Attachment jig of inductor . 9
5.5 Measuring method . 9
5.6 Quality conformance inspection . 9
6 Measuring method of temperature rise limited current. 9
6.1 General . 9
6.2 Test conditions . 10
6.3 Measurement Measuring jig . 10
6.3.1 General . 10
6.3.2 Printed-wiring board method . 10
6.3.3 Lead wire method . 13
6.4 Measuring method and calculation . 14
6.4.1 General . 14
6.4.2 Resistance substitution method . 14
6.4.3 Thermo-couple method . 15
6.5 Quality conformance inspection . 17
7 Determination of rated current . 17
8 Information to be given in the detail specification . 17
8.1 General . 17
8.2 Measuring method of DC saturation limited current . 17
8.3 Measuring method of temperature rise limited current . 17
Annex A (informative) Example of recommended description on product specification
sheets and catalogues . 18
Bibliography . 19
Figure 1 – Inductance measurement measuring circuit under application
of DC saturation condition . 8
Figure 2 – Example of printed-wiring boards . 13
Figure 3 – Temperature rise measurement measuring circuit by resistance substitution
method . 14
Figure 4 – Temperature rise measurement measuring circuit by thermo-couple method . 16
Table 1 – Width of circuits . 10
Table 2 – Circuit pattern width and thickness . 11
Table 3 – Wire size of circuits . 14
– 4 – IEC 62024-2:2020 RLV © IEC 2020
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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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
International Standard IEC 62024-2 has been prepared IEC technical committee 51: Magnetic
components, ferrite and magnetic powder materials.
This second edition cancels and replaces the first edition published in 2008. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of Table 2 and Figure 2 b).
The text of this International Standard is based on the following documents:
CDV Report on voting
51/1303/CDV 51/1325/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 of IEC 62024 series, published 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 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62024-2:2020 RLV © IEC 2020
HIGH FREQUENCY INDUCTIVE COMPONENTS –
ELECTRICAL CHARACTERISTICS AND MEASURING METHODS –
Part 2: Rated current of inductors for DC-to-DC converters
1 Scope
This part of IEC 62024 specifies the measuring methods of the rated direct current limits for
small inductors.
Standardized measuring methods for the determination of ratings enable users to accurately
compare the cu
...