IEC 61340-4-8:2014

IEC 61340-4-8 ®
Edition 2.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrostatics –
Part 4-8: Standard test methods for specific applications – Electrostatic
discharge shielding – Bags
Électrostatique –
Partie 4-8: Méthodes d’essai normalisées pour des applications spécifiques –
Blindage contre les décharges électrostatiques – Sacs

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IEC 61340-4-8 ®
Edition 2.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrostatics –
Part 4-8: Standard test methods for specific applications – Electrostatic

discharge shielding – Bags
Électrostatique –
Partie 4-8: Méthodes d’essai normalisées pour des applications spécifiques –

Blindage contre les décharges électrostatiques – Sacs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 17.220.99; 29.020 ISBN 978-2-8322-1925-6

– 2 – IEC 61340-4-8:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Required equipment . 7
4.1 ESD simulator . 7
4.2 Waveform verification equipment . 7
4.2.1 General . 7
4.2.2 Oscilloscope . 7
4.2.3 Current probe . 7
4.2.4 High voltage resistor . 7
Capacitive probe . 7
4.3
4.4 Discharge electrode and ground electrode . 7
4.5 Bag size . 7
4.6 Computer/software . 8
4.7 Environmental chamber . 8
5 ESD simulator waveform verification procedure . 8
6 System verification procedure . 8
7 Test procedure including conditioning . 9
8 Reporting. 9
Annex A (informative) Energy calculation program . 13

Figure 1 – ESD simulator . 10
Figure 2 – Parallel plate capacitive probe . 11
Figure 3 – Current waveform through a 500 Ω resistor . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROSTATICS –
Part 4-8: Standard test methods for specific applications –
Electrostatic discharge shielding – Bags

FOREWORD
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International Standard IEC 61340-4-8 has been prepared by IEC technical committee 101:
Electrostatics.
This second edition cancels and replaces the first edition published in 2010 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification to the title to include the word "Electrostatic" before discharge shielding";
b) removal of normative references ANSI/ESD STM5.1 and ASTM D-257-78 and replaced by
normative references IEC 61340-3-1 and IEC 60093;
c) new normative reference to IEC 61340-5-3 added, because the requirement for shielding
bags have been included in this standard;
d) imperial units have been removed.

– 4 – IEC 61340-4-8:2014 © IEC 2014
The text of this standard is based on the following documents:
FDIS Report on voting
101/448/FDIS 101/456A/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.
A list of all parts in the IEC 61340 series, under the general title Electrostatics, can be found
on the IEC website.
The committee has decided that the contents of this publication will remain
...