IEC TR 61340-5-2:2007

IEC/TR 61340-5-2
Edition 1.0 2007-08
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Electrostatics –
Part 5-2: Protection of electronic devices from electrostatic phenomena –
User guide
Electrostatique –
Partie 5-2: Protection des dispositifs électroniques contre les phénomènes
électrostatiques – Guide d’utilisation

IEC/TR 61340-5-2:2007
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IEC/TR 61340-5-2
Edition 1.0 2007-08
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Electrostatics –
Part 5-2: Protection of electronic devices from electrostatic phenomena –
User guide
Electrostatique –
Partie 5-2: Protection des dispositifs électroniques contre les phénomènes
électrostatiques – Guide d’utilisation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 17.220.99; 29.020 ISBN 2-8318-9175-2

– 2 – TR 61340-5-2 © IEC:2007
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.8

2 Normative references .8

3 Terms and definitions .9

4 ESD control program plan .9

4.1 Developing an ESD control program plan .9
4.1.1 Assignment of an ESD coordinator .9
4.1.2 Determination of part ESD sensitivity.9
4.1.3 Initial process and organizational assessment .9
4.1.4 Documentation of ESD control program plan .10
4.1.5 Tailoring .11
4.2 Development of a training plan .11
4.2.1 Personnel training .11
4.3 Development of a compliance verification plan .13
4.3.1 Introduction .13
4.3.2 ESD control items.13
4.3.3 Verification frequency.14
4.3.4 Type of verifications .14
4.3.5 ESD control item limits .14
4.3.6 Test methods.14
4.3.7 Test equipment.15
4.3.8 Auditor skills.15
4.3.9 Reporting of audit findings.15
4.4 Grounding/bonding systems .18
4.4.1 Introduction .18
4.4.2 Basic grounding requirements .18
4.4.3 Additional grounding considerations .20
4.4.4 Verification of ESD grounding system.21
4.4.5 Verification of proper installation of ESD control items.22
4.5 Personnel grounding .22

4.5.1 System requirements.22
4.5.2 Wrist strap system.23
4.5.3 Footwear-flooring system .23
4.6 Protected areas (EPA).25
4.7 ESD control items .26
4.7.1 Work surfaces .26
4.7.2 Wrist straps .29
4.7.3 Static protective floor materials .33
4.7.4 Footwear .38
4.7.5 Static protective seating .39
4.7.6 Ionization.40
4.7.7 Garments .51
4.7.8 Storage racks and shelving.54
4.7.9 Mobile equipment .55

TR 61340-5-2 © IEC:2007 – 3 –
4.8 Packaging electronic products for shipment and storage .56

4.8.1 Introduction and purpose .56

4.8.2 Definitions .56

4.8.3 Selecting/designing the right package .57

4.9 Marking .60

4.9.1 Marking of assemblies and equipment .60

4.9.2 Marking of packaging .61

4.9.3 Other marking considerations .62

Annex A (informative) Example ESD control document based on IEC 61340-5-1 .63
Annex B (informative) ESD control element considerations .69

Figure 1 – Example audit report showing current status of ESD program .16
Figure 2 – Example audit report showing target for manufacturing line.17
Figure 3 – Example audit report showing audit trend report.17
Figure 4a – North American electrical power system.19
Figure 4b – Malaysia electrical power system .19
Figure 4c – UK electrical power system – Single phase system .19
Figure 4 – Country-specific electrical power systems .19
Figure 5 –Example of individually grounded benches - Recommended.20
Figure 6 – Example of a series ground connection of benches – Not recommended.21
Figure 7 – Relationship between body voltage and resistance to ground.23
Figure 8 – Voltage reading on person walking across grounded conductive floor whilst
wearing two heelstraps .24
Figure 9 – Ionization by alpha radiation .42
Figure 10 – Corona ionization – Positive.42
Figure 11 – Corona ionization – Negative .42
Figure 12 – ESD sensitive part or assembly.61
Figure 13 – Example of a warning label for ESDS .61
Figure 14 – Example of a packaging label.62
Figure 15 – ESD material marking .62
Figure A.1 – Sign indicating special handling conditions .66

Figure A.2 – Label indicating product is ESD sensitive.67
Figure B.1a – Example 1.70
Figure B.1b – Example 2.70
Figure B.1c – Example 3.71
Figure B.1 – Voltage generated for three types of footwear all on the same flooring
system .71

Table 1 – Type of wrist strap bands
...