1、 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 lectrostatique Partie 4-8: Mthodes dessai normalises pour des applications spcifiques Blindage contre les dch
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19、t CISPR de lIEC. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 61340-4-8 Edition 2.0 2014-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrostatics Part 4-8: Standard test metho
20、ds for specific applications Electrostatic discharge shielding Bags lectrostatique Partie 4-8: Mthodes dessai normalises pour des applications spcifiques Blindage contre les dcharges lectrostatiques Sacs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 17.22
21、0.99; 29.020 PRICE CODE CODE PRIX ISBN 978-2-8322-1925-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous
22、assurer que vous avez obtenu cette publication via un distributeur agr. 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 General . 7 4.2
23、.1Oscilloscope 7 4.2.2Current probe 7 4.2.3High voltage resistor 7 4.2.4 4.3 Capacitive probe . 7 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
24、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 resistor 12 IEC 61340-4-8:2014 IEC 2014 3 INTERNATIONAL ELECTROTECHNICAL COMMIS
25、SION _ ELECTROSTATICS Part 4-8: Standard test methods for specific applications Electrostatic discharge shielding Bags FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Com
26、mittees). The object of 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, Publicly Avai
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35、ced 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. Internat
36、ional 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 prev
37、ious 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, becaus
38、e 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
39、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
40、 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 reconfirmed, withdrawn, replaced by a revised edition,
41、or amended. IEC 61340-4-8:2014 IEC 2014 5 INTRODUCTION It is the intention of this part of IEC 61340 to provide industry with a common, repeatable method for testing and determining the electrostatic discharge shielding ability of electrostatic discharge shielding bags. This test method describes th
42、e use of a single current probe in order to obtain the energy value inside a bag when tested with a 1 000 V human body model discharge pulse in an ESD simulator. The standard addresses important variables such as: discharge waveform characteristics; capacitive probe capacitance; bag size. 6 IEC 6134
43、0-4-8:2014 IEC 2014 ELECTROSTATICS Part 4-8: Standard test methods for specific applications Electrostatic discharge shielding Bags 1 Scope This part of IEC 61340 provides a test method for evaluating the performance of electrostatic discharge shielding bags tested according to the requirements of I
44、EC 61340-5-3. The design voltage for the test apparatus is 1 000 V d.c. The test method presented in this standard can also be applied to packaging other than shielding bags. The purpose of this standard is to ensure that testing laboratories who use this test method to evaluate a given packaging ma
45、terial will obtain similar results. This standard does not address protection from electromagnetic interference (EMI), radio frequency interference (RFI), electromagnetic pulsing (EMP) nor protection against volatile materials. 2 Normative references The following documents, in whole or in part, are
46、 normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60093, Methods of test for volume resistivity and su
47、rface resistivity of solid electrical insulating materials 1IEC 61340-3-1, Electrostatics Part 3-1: Methods for simulation of electrostatic effects Human body model (HBM) electrostatic discharge test waveforms IEC 61340-5-3, Electrostatics Part 5-3: Protection of electronic devices from electrostati
48、c phenomena Properties and requirements classification for packaging intended for electrostatic discharge sensitive devices 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 electrostatic discharge shield barrier or enclosure that limits the pa
49、ssage of current and attenuates an electromagnetic field resulting from an electrostatic discharge _ 1Replacements for IEC 60093 are currently under consideration and have been assigned project numbers in the IEC 62631-3 series. The relevant project is IEC 62631-3-2, Dielectric and resistive properties of solid insulating materials Part 3-2: Determination of resistive prope
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