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1、BSI Standards PublicationPD IEC/TR 61340-5-2:2018ElectrostaticsPart 5-2: Protection of electronic devices from electrostatic phenomena - User guidePD IEC/TR 61340-5-2:2018National forewordThis Published Document is the UK implementation of IEC TR 61340-5- 2:2018. It supersedes PD CLC/TR 61340-5-2:20
2、08, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/101, Electrostatics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a
3、 contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93967 9ICS 31.020; 29.020; 17.220.99Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was
4、published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDateText affectedIEC TR 61340-5-2 Edition 2.02018-03TECHNICAL REPORTElectrostatics Part 5-2: Protection of electronic devices from electrostatic phenomena User
5、guideINTERNATIONAL ELECTROTECHNICAL COMMISSIONICS 17.220.99; 29.020ISBN 978-2-8322-5445-5Warning! Make sure that you obtained this publication from an authorized distributor. Registered trademark of the International Electrotechnical CommissionPD IEC/TR 61340-5-2:2018 2 IEC TR 61340-5-2:2018 IEC 201
6、8CONTENTSFOREWORD5INTRODUCTION71 Scope92 Normative references93 Terms, definitions and abbreviated terms93.1 Terms and definitions93.2 Abbreviated terms94 Personnel safety105 ESD control program105.1 General105.1.1 ESD control program requirements105.1.2 ESD coordinator105.1.3 Tailoring105.2 ESD con
7、trol program administrative requirements115.2.1 ESD control program plan115.2.2 Training plan135.2.3 Product qualification155.2.4 Compliance verification plan165.3 ESD control program technical requirements205.3.1 Grounding/equipotential bonding systems205.3.2 Personnel grounding225.3.3 ESD protecte
8、d areas (EPA)265.3.4 Packaging electronic products for shipment and storage615.3.5 Marking656 Automated handling equipment (AHE)687 ESD control gloves and finger cots687.1 Introductory remarks687.2 Types697.3 Testing and qualification707.3.1 Properties to test707.3.2 Resistance measurements707.3.3 C
9、harge decay time measurements727.3.4 Product charging test738 Handtools758.1 Introductory remarks758.2 Testing and qualification758.2.1 Qualification criteria758.2.2 Resistance measurement758.2.3 Charge decay78Annex A (informative) Example ESD control program plan based on IEC 61340-5-181A.1 Introdu
10、ctory remarks (Not part of the example)81A.2 Purpose81A.3 Range81A.4 Responsibilities81A.5 References81IEC TR 61340-5-2:2018 IEC 2018 3 A.6 Definitions81A.7 ESD control program plan81A.8 Training plan82A.8.1 Initial training82A.8.2 Refresher training82A.9 Product qualification83A.10 Compliance verif
11、ication plan83A.11 ESD protected area requirements83A.11.1 General requirements83A.11.2 Grounding plan84A.11.3 Personnel grounding plan84A.12 Tailoring statement84A.13 Work surfaces85A.14 Packaging85A.15 Marking85A.16 Compliance verification procedures86A.16.1 Testing of wrist strap connection point
12、86A.16.2 Checking for static generators86A.16.3 Checking isolated conductors86Annex B (informative) ESD control element considerations87B.1 General remarks87B.2 ESD control footwear and flooring87B.2.1 General87B.2.2 Ionizers90B.2.3 Constant monitors90Bibliography92Figure 1 Example assessment report
13、 showing trend report19Figure 2 Example of individually grounded benches Recommended21Figure 3 Example of a series ground connection of benches Not recommended22Figure 4 Relationship between body voltage and resistance to ground23Figure 5 Voltage reading on person walking across grounded conductive
14、floor whilstwearing two heelstraps25Figure 6 Ionization by alpha radiation45Figure 7 Corona ionization Positive45Figure 8 Corona ionization Negative45Figure 9 ESD sensitive part or assembly66Figure 10 Example of a warning label for ESDS66Figure 11 Example of a packaging label67Figure 12 ESD control
15、material marking67Figure 13 Glove or finger cot resistance testing (as worn)71Figure 14 Testing glove or finger cot resistance via a wrist strap system72Figure 15 Product charging tests75Figure 16 Tool resistance test76Figure 17 Tool resistance to ground system77Figure 18 Charge decay test79 4 IEC T
16、R 61340-5-2:2018 IEC 2018 Figure 19 Tool CPM waveforms80Figure A.1 Sign indicating special handling conditions85Figure A.2 Label indicating product is ESD sensitive86Figure B.1 Voltage generated for three types of footwear all on the same flooringsystem90Table 1 Types of bands32Table 2 Ionizer selec
17、tion checklist49Table A.1 ESD control program compliance verification requirements83IEC TR 61340-5-2:2018 IEC 2018 5 INTERNATIONAL ELECTROTECHNICAL COMMISSIONELECTROSTATICS Part 5-2: Protection of electronic devices from electrostatic phenomena User guideFOREWORD1) The International Electrotechnical
18、 Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end
19、 and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Commi
20、ttee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in ac
21、cordance with conditions determined by agreement between the two organizations.2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all i
22、nterested IEC National Committees.3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held respo
23、nsible for the way in which they are used or for any misinterpretation by any end user.4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence
24、 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks o
25、f conformity. IEC is not responsible for any services carried out by independent certification bodies.6) All users should ensure that they have the latest edition of this publication.7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
26、members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publicati
27、on or any other IEC Publications.8) Attention is drawn to the Normative references cited in this publication. Use of the referenced 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
28、 may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collecte
29、d data of a different kind from that which is normally published as an International Standard, for example state of the art.IEC TR 61340-5-2, which is a Technical Report, has been prepared by IEC technical committee 101: Electrostatics.This second edition cancels and replaces the first edition publi
30、shed in 2007. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:This second edition of IEC TR 61340-5-2 has been modified to provide guidance for users of IEC 61340-5-1:2016.Thetexthasbeenarrangedtofol
31、lowtherequirementsof 6 IEC TR 61340-5-2:2018 IEC 2018IEC 61340-5-1:2016 as closely as possible as well as providing specific guidance on each of the requirements of IEC 61340-5-1:2016.The text of this Technical Report is based on the following documents:Enquiry draftReport on voting101/532/DTR101/54
32、3/RVDTRFull information on the voting for the approval of this technical report 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 in the IEC 61340 series, published under the general
33、title Electrostatics, 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
34、reconfirmed, withdrawn, replaced by a revised edition, or amended.A bilingual version of this publication may be issued at a later date.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 understa
35、nding of its contents. Users should therefore print this document using a colour printer.IEC TR 61340-5-2:2018 IEC 2018 7 INTRODUCTIONThis user guide has been produced for individuals and organizations that are faced with controlling electrostatic discharge (ESD). It provides guidance that can be us
36、ed for developing, implementing and monitoring an electrostatic discharge control program in accordance with IEC 61340-5-1.This user guide applies to activities that manufacture, process, assemble, install, package, label, service, test, inspect or otherwise handle electrical or electronic parts, as
37、semblies and equipment susceptible to damage by electrostatic discharges greater than or equal to 100 V using the human body model (HBM), 200 V charged device model (CDM) or 35 V on isolated conductors. Isolated conductors were historically represented by the machine model (MM). The MM test is no lo
38、nger used for qualification of devices, only HBM and CDM. The MM is retained in this document for process control of isolated conductors. These three levels were selected for IEC 61340-5-1 as the baseline susceptibility threshold, since a large majority of the ESD products on the market have a sensi
39、tivity of greater than 100 V HBM, 200 V CDM and 35 V for isolated conductors. If ESD sensitive devices (ESDS) of less than these values are being handled, additional controls can be implemented or some of the technical control item requirements can be adjusted.The requirements established for each o
40、f the ESD control items are specified for an ESD control program designed for 100 V HBM, 200 V CDM and 35 V for isolated conductors. The 100 V HBM value is predicated on maximum voltage levels attainable on an individual when they are grounded via techniques accepted throughout the electronics indus
41、try as outlined in IEC 61340-5-1.For organizations concerned with charged device model damage, IEC 61340-5-1 establishes requirements concerning the use of insulators in the ESD protected area (EPA) based on maximum electrostatic field limits.Any contact and physical separation of materials or flow
42、of solids, liquids, or particle-laden gases can generate electrostatic charges. Common sources of ESD include charged: personnel, conductors, common polymeric materials, and processing equipment. ESD damage can occur when: a charged person or object comes into contact with an ESDS; an ESDS comes int
43、o direct contact with a highly conductive surface while exposed to an electrostatic field; a charged ESDS comes into contact with another conductive surface which is at a different electrical potential. This surface may or may not be grounded.Examples of ESDS are microcircuits, discrete semiconducto
44、rs, thick and thin film resistors, hybrid devices, printed circuit boards and piezoelectric crystals. It is possible to determine device and item susceptibility by exposing the device to simulated ESD events. The level of sensitivity, determined by test using simulated ESD events, may not necessaril
45、y relate to the level of sensitivity in a real life situation. However, the levels of sensitivity are used to establish a baseline of susceptibility data for comparison of devices with equivalent part numbers from different manufacturers. Three different models have been used for qualification of el
46、ectronic components human body model (HBM), machine model (MM), and charged device model (CDM). In current practice, devices are qualified only using HBM and CDM susceptibility tests.The general principles described in IEC 61340-5-1 are not limited in their applicability to ESDS with ESD sensitiviti
47、es defined in IEC 61340-5-1 (e.g. 100 V HBM). For organizations that handle ESDS with withstand voltages higher or lower than those defined in IEC 61340-5-1, the general principles of IEC 61340-5-1 can still be used. The organization can modify some of the required limits specified in Tables 2 to 3 of IEC 61340-5-1:2016. The program documentation