IEC 62490-2:2010

ESL measuring method - Part 2: Surface mount capacitors for use in electronic equipment

IEC 62490-2:2010 provides the ESL measuring method for the surface mount capacitors for use in electronic equipment.

Méthode de mesure de l'ESL - Partie 2: Condensateurs pour montage en surface utilisés dans les équipements électroniques

La CEI 62490-2:2010 fournit la méthode de mesure de l'inductance série équivalente L (ESL) destinée aux condensateurs pour montage en surface utilisés dans les équipements électroniques.

General Information

• Status: Published
• Publication Date: 27-Jul-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.060.01 - Capacitors in general
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Current Stage: PPUB - Publication issued
• Start Date: 31-Aug-2010
• Completion Date: 28-Jul-2010

Standards Content (Sample)

IEC 62490-2 ®
Edition 1.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
ESL measuring method –
Part 2: Surface mount capacitors for use in electronic equipment

Méthode de mesure de l’ESL –
Partie 2: Condensateurs pour montage en surface utilisés dans les équipements
électroniques
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IEC 62490-2 ®
Edition 1.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
ESL measuring method –
Part 2: Surface mount capacitors for use in electronic equipment

Méthode de mesure de l’ESL –
Partie 2: Condensateurs pour montage en surface utilisés dans les équipements
électroniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 31.060.01 ISBN 978-2-88912-069-7
– 2 – 62490-2 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .6
4 Test fixture and compensation chip .6
4.1 Test fixture .6
4.2 The open, short, and load compensation chip.9
4.2.1 The open compensation chip .9
4.2.2 The load compensation chip .9
4.2.3 The short compensation chip .9
5 Measuring method.10
5.1 Measuring equipment .10
5.2 Measurement conditions.10
5.3 Measurement points .10
5.4 Frequency and signal level.10
5.5 Measurement procedure.11
5.5.1 General .11
5.5.2 Open compensation.11
5.5.3 Load compensation .11
5.5.4 Short compensation.12
5.5.5 ESL measurement .13
6 Items to be indicated in the test result report .13
Annex A (informative) Theoretical ESL value of the short compensation chip.14

Figure 1 – Lead frame and thin coating types of surface mount capacitors and the
specification of the dimensions (L, W, and H).5
Figure 2 – Surface mount capacitors with face down terminal .5
Figure 3 – Test fixture and terminals of test fixture .6
Figure 4 – Connection diagram .7
Figure 5 – Sectional view of the test fixture with an inserted surface mount capacitor
pressured to the terminals of the test fixture .8
Figure 6 – Example of surface mount capacitor mounted on terminals of test fixture .8
Figure 7 – Front view of mounting position of objects on test fixture.9
Figure 8 – Measurement points.10
Figure 9 – Open compensation-chip position.11
Figure 10 – Load compensation-chip position .12
Figure 11 – Short compensation-chip position.12
Figure A.1 – Points of contact of the short compensation chip and terminals of test
fixture .15

Table A.1 – The calculation results of inductance of the short compensation chip.14

62490-2 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ESL MEASURING METHOD –
Part 2: Surface mount capacitors
for use in electronic equipment

FOREWORD
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International Standard IEC 62490-2 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
40/2045/FDIS 40/2057/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62490-2 © IEC:2010
A list of all the parts in the IEC 62490 series, under the general title ESL measuring method,
can be found on the IEC web site.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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
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• withdrawn,
• replaced by a revised edition, or
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62490-2 © IEC:2010 – 5 –
ESL MEASURING METHOD –
Part
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