ISO 10605:2023

Road vehicles — Test methods for electrical disturbances from electrostatic discharge

This document specifies the electrostatic discharge (ESD) test methods necessary to evaluate electronic modules intended for vehicle use. It applies to discharges in the following cases: — ESD in assembly; — ESD caused by service staff; — ESD caused by occupants. This document describes test procedures for evaluating both electronic modules on the bench and complete vehicles. This document applies to all types of road vehicles regardless of the propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The test for electronic modules on the bench described in this document applies to any DUT (powered by an unshielded power system, DUT powered by a shielded power system, self-powered DUT, etc.). This document does not apply to pyrotechnic modules.

Véhicules routiers — Méthodes d'essai des perturbations électriques provenant de décharges électrostatiques

General Information

• Status: Published
• Publication Date: 01-Jun-2023
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Drafting Committee: ISO/TC 22/SC 32/WG 3 - Electromagnetic compatibility
• Current Stage: 6060 - International Standard published
• Start Date: 02-Jun-2023
• Due Date: 25-Sep-2023
• Completion Date: 02-Jun-2023

Relations

• Revises: ISO 10605:2008/Amd 1:2014 - Road vehicles — Test methods for electrical disturbances from electrostatic discharge — Amendment 1
• Effective Date: 23-Apr-2020
• Revises: ISO 10605:2008 - Road vehicles — Test methods for electrical disturbances from electrostatic discharge
• Effective Date: 23-Apr-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10605
Third edition
2023-06
Road vehicles — Test methods
for electrical disturbances from
electrostatic discharge
Véhicules routiers — Méthodes d'essai des perturbations électriques
provenant de décharges électrostatiques
Reference number
ISO 10605:2023(E)
© ISO 2023

---------------------- Page: 1 ----------------------
ISO 10605:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
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ISO 10605:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test conditions .2
5 Test location . 3
6 Test apparatus and instrumentation .3
6.1 ESD generator . 3
6.2 Discharge tips . 3
6.2.1 Contact discharge tip . 3
6.2.2 Air discharge tip . 4
6.3 Discharge current specifications . 5
6.3.1 Contact discharge mode current specifications . 5
6.3.2 Air discharge mode current specifications . 6
6.4 Ground plane . 6
6.5 Field coupling plane . 7
6.6 Insulating block . 7
6.7 Dissipative mat . 7
6.8 Uncertainty (informative) . 7
7 Discharge modes . 7
7.1 General . 7
7.2 Contact discharge mode . 7
7.3 Air discharge mode . . 7
8 Component immunity test method (powered-up test) . 8
8.1 General . 8
8.2 Test plan . 8
8.3 Test procedure for direct discharges . 8
8.3.1 General . 8
8.3.2 Test set-up . 8
8.3.3 Test method . 11
8.4 Test procedure for indirect discharges .12
8.4.1 General .12
8.4.2 Test set-up . 12
8.4.3 Test method . 15
9 Component packaging and handling test method (unpowered test) .16
9.1 General . 16
9.2 Test plan . 16
9.3 Test procedure . 16
9.3.1 General . 16
9.3.2 Test set-up . 17
9.3.3 Test method . 18
10 Vehicle test method .19
10.1 General . 19
10.2 Test plan . 19
10.3 Test procedure . 19
10.3.1 General . 19
10.3.2 Test set-up . 19
10.3.3 Test method . 21
11 Test report .21
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ISO 10605:2023(E)
Annex A (normative) Current target specification and verification of ESD generator .22
Annex B (informative) Standard target drawings and target verification method .26
Annex C (informative) Function performance status classification (FPSC) .38
Annex D (informative) Test method guidance — Generator resistor value and air or contact
discharge .42
Annex E (informative) Rationale for air discharge generator verification .45
Annex F (informative) Description of field coupling fixture for direct and indirect
discharge to powered-up DUT .47
Annex G (informative) Test method guidance – automatic operated ESD testing .49
Bibliography .52
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ISO 10605:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This third edition cancels and replaces the second edition (ISO 10605:2008), which has been
technically revised. It also incorporates the Amendment ISO 10605:2008/Amd 1 2014 and the Technical
Corrigendum ISO 10605:2008/Cor 1:2010.
The main changes are as follows:
— introduction of alternative test set-up with field coupling plane for direct and indirect discharges on
component (powered-up test);
— minimum number of discharges changed from 50 to 10 for indirect discharge on component
(powered-up test);
— interval between successive single discharges changed from 50 ms to 1 s for indirect discharge on
component (powered-up test);
— addition of a ground connection for discharges on DUT pins for component packaging and handling
test method (unpowered test);
— optional test set-up and procedure for electronic modules (powered-up test) moved from Annex to
main body;
— addition of new Annex G.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO 10605:2023(E)
Introduction
The electrostatic discharge, due to former charge build-ups generated, for example, when moving
about inside a vehicle or getting out of it, has assumed greater significance with the increase of vehicle
electronic modules. Tests simulating the electrostatic discharge of humans, in common use by various
industries, were examined and it was determined that they were not fully applicable to the automotive
environment. As a consequence, tests tailored to the automotive environment were developed.
Tests that simulate an electrostatic discharge (ESD) into a vehicle electrical system are based on the
human ESD model. Sensitive electrical devices can be adversely affected by energy either coupled or
radiated from electrostatic discharges.
This document describes ESD tests that are applicable to both automotive electronic modules and
vehicles.
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INTERNATIONAL STANDARD ISO 10605:2023(E)
Road vehicles — Test methods for electrical disturbances
from electrostatic discharge
1 Scope
This document specifies the electrostatic discharge (ESD) test methods necessary to evaluate electronic
modules intended for vehicle use. It applies to discharges in the following cases:
— ESD in assembly;
— ESD caused by service staff;
— ESD caused by occupants.
This document describes test procedures for evaluating both electronic modules on the bench and
complete vehicles. This document applies to all types of road vehicles regardless of the propulsion
system (e.g. spark-ignition engine, diesel engine, electric motor).
The test for electronic modules on the bench described in this document applies to any DUT (powered
by an unshielded power system, DUT powered by a shielded power system, self-powered DUT, etc.).
This document does not apply to pyrotechnic modules.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11452-1, Road vehicles — Component test methods for electrical disturbances from narrowband
radiated electromagnetic energy — Part 1: General principles and terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11452-1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
air discharge
test method characterized by bringing the test generator discharge tip close to the device under test
(DUT) (3.3); the discharge is by arcing on the DUT
3.2
contact discharge
test method characterized by contact of the test generator discharge tip with the device under test
(DUT) (3.3), where discharge is initiated by the generator discharge switch
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ISO 10605:2023(E)
3.3
DUT
device under test
single component or combination of components as defined to be tested
3.4
direct discharge
discharge directly on the device under test (DUT) (3.3)
3.5
ESD
electrostatic discharge
transfer of electrostatic charge between bodies at different potentials occurring prior to contact or
induced by an electrostatic field
3.6
ESD generator
instrument that simulates the human ESD model (3.9)
3.7
GP
ground plane
flat conductive surface (3.11) whose potential is used as a common reference
Note 1 to entry: The test voltage should also be referenced to the ground plane.
3.8
holding time
interval of time within which the decrease of the test voltage due to leakage, prior to the discharge, is
10 %
3.9
human ESD model
network of passive elements and voltage that characterizes a charged person as a source of an
electrostatic discharge (3.5) for automotive conditions
3.10
indirect discharge
discharge to a coupling plane near the device under test (DUT) (3.3)
Note 1 to entry: Discharge current produces a transient field that might affect the DUT. Indirect discharge
simulates discharge by a human being on items near the DUT.
3.11
surface
uninterrupted housing area, gap or opening
EXAMPLE Switches, tip switches, points of contact, air vents, speaker openings.
4 Test conditions
The user shall specify the test severity level(s) for the component and vehicle tests. Suggested test levels
are included in Annex C.
Standard test conditions shall be as follows:
— ambient temperature: (25 ± 10) °C;
— relative humidity between 20 % and 60 %.
If other values are agreed to by the users, these values shall be documented in the test report.
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ISO 10605:2023(E)
5 Test location
Shielded enclosures or even absorber-lined shielded enclosures are allowed but not required.
NOTE ESD testing creates transient fields, which can interfere with sensitive electronic devices or receivers,
even at a distance of a few meters. It is advisable that this be considered when choosing a test location.
6 Test apparatus and instrumentation
6.1 ESD generator
The ESD generator characteristics shall be as specified in Table 1.
Table 1 — General ESD generator parameters
Parameter Characteristic
a
Output voltage range contact discharge mode 2 kV to 15 kV, or as required in the test plan
a
Output voltage range air discharge mode 2 kV to 25 kV, or as required in the test plan
Output voltage accuracy ≤ 5 %
Output polarity Positive and negative
Rise time of short circuit current in contact discharge mode (10 %
0,7 ns to 1,0 ns
to 90 %)
Holding time ≥ 5 s
b
Storage capacitances 150 pF, 330 pF
b
Discharge resistances 330 Ω, 2 000 Ω
a
See examples in Annex C.
b
Storage capacitance and discharge resistance are nominal values, ESD generator shall meet discharge current
specifications in 6.3.
NOTE When an ESD generator is supplied from an external supply source, AC or DC, or controlled by a
separate unit and this (these) cable(s) is (are) not combined (bundled) with the ESD generator discharge return
cable, unintended current can flow through this (these) cable(s).
The ESD generator should be able to generate a repetition rate of at least 20 discharges per second
down to manual control without any degradation of the discharge current waveform.
The tip voltage should be checked continuously by the generator internal tip voltage supervision.
For contact discharge a grounded discharge resistor with 1 MΩ ±20 % resistance from tip to ground
is recommended and prevents pre-pulse-voltage occurrence which can lead to non-reproducible test
results; proper fixing of resistor shall not change the current shape.
In cases where a 2 m length of the discharge return cable is insufficient (e.g. for tall DUTs), a length not
exceeding 3 m may be used and compliance with the waveform specifications shall be guaranteed (e.g.
by the manufacturer or from calibration).
The ESD generator protective earth terminal shall be terminated to the facility protective earth.
Guidance on automatic operated ESD testing can be found in Annex G.
6.2 Discharge tips
6.2.1 Contact discharge tip
The discharge tip for contact mode ESD is shown in Figure 1. The tip is typically made of stainless steel.
For contact discharge to pins the discharge tip shape can be varied. The diameter of the tip shall be
12 ± 1 mm. Springs for safe contact and a bending of not more than 90° are possible. The current shape
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ISO 10605:2023(E)
with modified tip shall comply with the given specification. The angle “alpha” shall be between 25° and
40°.
Dimensions in millimetres
Key
1 sharp point
Figure 1 — Contact discharge tip of the ESD generator
6.2.2 Air discharge tip
The discharge tip for air discharge mode ESD is shown in Figure 2.
Dimensions in millimetres
Key
1 body of simulator
NOTE For air discharge at test voltages higher than 15 kV, a larger tip (e.g. 20 mm to 30 mm diameter) can be
used to avoid pre-discharge.
Figure 2 — Air discharge tip of the ESD generator
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ISO 10605:2023(E)
6.3 Discharge current specifications
6.3.1 Contact discharge mode current specifications
The contact discharge mode currents shall be verified according to Annex A. The contact discharge
mode waveform parameters for each discharge network shall be within the value ranges specified in
Table 2.
Table 2 — Contact discharge mode current specifications
Nominal capac-
Peak current/ Current at t / Current at t /
1 2
itance/ resist- Tolerance Tolerance Tolerance
test voltage test voltage test voltage
ance values
A/kV % A/kV % A/kV %
2 1
150 pF / 330 Ω 3,75 ±10 ±30 ±30
(at t = 30 ns) (at t = 60 ns)
1 2
2 1
330 pF / 330 Ω 3,75 ±10 ±30 ±30
(at t = 65 ns) (at t = 130 ns)
1 2
0,275 0,15
+30
150 pF / 2 000 Ω 3,75 ±30 ±50
 0
(at t = 180 ns) (at t = 360 ns)
1 2
0,275 0,15
+30
330 pF / 2 000 Ω 3,75 ±30 ±50
 0
(at t = 400 ns) (at t = 800 ns)
1 2
NOTE 1 The peak current level is taken from the measurement system without any data interpolation.
NOTE 2 The target used with this measurement system fulfils the requirements of Clauses A.1 and A.2. An example is
defined in Annex B.
The measurement times (30 ns, 60 ns, 65 ns, 130 ns, 180 ns, 360 ns, 400 ns and 800 ns) are derived
from the resistance-capacitive (RC) time constant − 40 % (current t ) and +20 % (current t ), to define
1 2
two values on the falling slope of the current pulse in accordance with IEC 61000-4-2.
Examples of calculated contact discharge waveforms in accordance with the specifications in Table 2
are given in Figures 3 a) and 3 b).
a) Calculated contact discharge waveform of ESD generator
(for 150 pF / 330 pF, 330 Ω and 1 kV)
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ISO 10605:2023(E)
Key
X time [ns]
Y current [A]
1 150 pF, 330 Ω
2 330 pF, 330 Ω
3 150 pF, 2 kΩ
4 330 pF, 2 kΩ
b) Calculated contact discharge waveform of ESD generator
(for 150 pF/330 pF, 2 kΩ and 1 kV)
Figure 3 — Calculated contact discharge waveform of ESD generator
6.3.2 Air discharge mode current specifications
Information on possible air discharge generator verification procedures is given in Annex E.
6.4 Ground plane
The ground plane (GP) shall be metallic sheets (e.g. copper, brass or aluminium) and have a minimum
thickness of 0,25 mm.
NOTE If aluminium is used, care is taken that oxidation does not prevent a good ground connection.
The minimum width of the GP shall be 800 mm, or the width of the entire underneath of the test setup
[DUT and associated equipment (e.g. harness including supply lines, load simulator located on the test
bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever is the larger.
The minimum length of the GP shall be 1 600 mm or the length of the entire underneath of the test
setup [DUT and associated equipment (e.g. harness including supply lines, load simulator located on the
test bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever is the larger.
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ISO 10605:2023(E)
In case of very large DUT, the above GP dimensions/shape can be adapted by using a GP extension.
Connection between an already existing GP and a GP extension should have a DC resistance lower or
equal to 2,5 mΩ.
6.5 Field coupling plane
Details of the construction of the field coupling plane can be found in Annex F.
6.6 Insulating block
Insulating blocks, if used, shall be constructed of clean non-hygroscopic material. The relative
permittivity should range between 1 and 5 (e.g. polyethylene). The blocks shall be (50 +/- 5) mm in
height and extend beyond the test setup by at least 20 mm on all sides.
6.7 Dissipative mat
7 9
Dissipative support from a material which has a surface resistivity between 10 Ω per square and 10 Ω
per square with a height between 2 mm and 3 mm.
6.8 Uncertainty (informative)
Refer to IEC 61000-4-2:2008, Annex E.
7 Discharge modes
7.1 General
Discharges can be applied by two discharge modes: contact and air. See Annex D for guidance on air
versus contact discharge modes.
7.2 Contact discharge mode
In the case of contact discharges, the discharge tip (see Figure 1) shall touch a conducting point on the
DUT before the discharge switch is actuated.
Where painted surfaces cover a conducting substrate, the following procedure is used. If the coating
is not declared to be an insulating coating by the equipment manufacturer, then the pointed tip of the
generator penetrates the coating so as to make contact with the conducting substrate.
7.3 Air discharge mode
In air discharge mode, the discharge tip is charged to the test voltage and then brought with the
demanded speed of approach to the DUT, applying the discharge through an arc that happens when the
tip approaches close enough to the DUT to break down the dielectric material between the tip and test
point.
The speed of approach of the discharge tip is a critical factor in the rise time and amplitude of the
injected current during an air discharge. Because the approach speed is not trivial to measure, in
practice the ESD generator should approach the DUT as quickly as possible (e.g. between 0,1 m/s and
0,5 m/s) until the discharge occurs or the discharge tip touches the discharge point without causing
mechanical damage to the DUT or generator.
Where painted surfaces cover a conducting substrate or dielectric surfaces are used as boxes, the
following procedure is used. If
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10605
ISO/TC 22/SC 32
Road vehicles — Test methods
Secretariat: JISC
for electrical disturbances from
Voting begins on:
2023-03-02 electrostatic discharge
Voting terminates on:
Véhicules routiers — Méthodes d'essai des perturbations électriques
2023-04-27
provenant de décharges électrostatiques
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 10605:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 10605:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10605
ISO/TC 22/SC 32
Road vehicles — Test methods
Secretariat: JISC
for electrical disturbances from
Voting begins on:
electrostatic discharge
Voting terminates on:
Véhicules routiers — Méthodes d'essai des perturbations électriques
provenant de décharges électrostatiques
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 10605:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 10605:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test conditions .2
5 Test location . 3
6 Test apparatus and instrumentation .3
6.1 ESD generator . 3
6.2 Discharge tips . 3
6.2.1 Contact discharge tip . 3
6.2.2 Air discharge tip . 4
6.3 Discharge current specifications . 5
6.3.1 Contact discharge mode current specifications . 5
6.3.2 Air discharge mode current specifications . 6
6.4 Ground plane . 6
6.5 Field coupling plane . 7
6.6 Insulating block . 7
6.7 Dissipative mat . 7
6.8 Uncertainty . 7
7 Discharge modes . 7
7.1 General . 7
7.2 Contact discharge mode . 7
7.3 Air discharge mode . . 7
8 Component immunity test method (powered-up test) . 8
8.1 General . 8
8.2 Test plan . 8
8.3 Test procedure for direct discharges . 8
8.3.1 General . 8
8.3.2 Test set­up . 8
8.3.3 Test method . 11
8.4 Test procedure for indirect discharges .12
8.4.1 General .12
8.4.2 Test set­up . 12
8.4.3 Test method . 15
9 Component packaging and handling test method (unpowered test) .16
9.1 General . 16
9.2 Test plan . 16
9.3 Test procedure . 16
9.3.1 General . 16
9.3.2 Test set­up . 17
9.3.3 Test method . 18
10 Vehicle test method .19
10.1 General . 19
10.2 Test plan . 19
10.3 Test procedure . 19
10.3.1 General . 19
10.3.2 Test set­up . 19
10.3.3 Test method . 21
11 Test report .21
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ISO/FDIS 10605:2023(E)
Annex A (normative) Current target specification and verification of ESD generator .22
Annex B (informative) Standard target drawings and target verification method .26
Annex C (informative) Function performance status classification (FPSC) .38
Annex D (informative) Test method guidance — Generator resistor value and airor contact
discharge .42
Annex E (informative) Rationale for air discharge generator verification .45
Annex F (informative) Description of field coupling fixture for direct and indirect discharge
to powered-up DUT .47
Annex G (informative) Test method guidance – automatic operated ESD testing .49
Bibliography .52
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---------------------- Page: 4 ----------------------
ISO/FDIS 10605:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This third edition cancels and replaces the second edition (ISO 10605:2008), which has been technically
revised. It also incorporates the Amendment ISO 10605:2008:/Amd.1 2014 and the Technical
Corrigendum ISO 10605:2008/Cor 1:2010.
The main changes are as follows:
— introduction of alternative test set-up with field coupling plane for direct and indirect discharges on
component (powered­up test);
— minimum number of discharges changed from 50 to 10 for indirect discharge on component
(powered­up test);
— interval between successive single discharges changed from 50 ms to 1 s for indirect discharge on
component (powered­up test);
— addition of a ground connection for discharges on DUT pins for Component packaging and handling
test method (unpowered test);
— optional test set-up and procedure for electronic modules (powered-up test) moved from Annex to
main body;
— addition of new Annex G.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
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ISO/FDIS 10605:2023(E)
Introduction
The electrostatic discharge, due to former charge build-ups generated, for example, when moving
about inside a vehicle or getting out of it, has assumed greater significance with the increase of vehicle
electronic modules. Tests simulating the electrostatic discharge of humans, in common use by various
industries, were examined and it was determined that they were not fully applicable to the automotive
environment. As a consequence, tests tailored to the automotive environment were developed.
Tests that simulate an electrostatic discharge (ESD) into a vehicle electrical system are based on the
human ESD model. Sensitive electrical devices can be adversely affected by energy either coupled or
radiated from electrostatic discharges.
This document describes ESD tests that are applicable to both automotive electronic modules and
vehicles.
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 10605:2023(E)
Road vehicles — Test methods for electrical disturbances
from electrostatic discharge
1 Scope
This document specifies the electrostatic discharge (ESD) test methods necessary to evaluate electronic
modules intended for vehicle use. It applies to discharges in the following cases:
— ESD in assembly;
— ESD caused by service staff;
— ESD caused by occupants.
This document describes test procedures for evaluating both electronic modules on the bench and
complete vehicles. This document applies to all types of road vehicles regardless of the propulsion
system (e.g. spark-ignition engine, diesel engine, electric motor).
The test for electronic modules on the bench described in this document applies to any DUT (powered
by an unshielded power system, DUT powered by a shielded power system, self-powered DUT, etc.).
This document does not apply to pyrotechnic modules.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11452­1, Road vehicles — Component test methods for electrical disturbances from narrowband
radiated electromagnetic energy — Part 1: General principles and terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11452-1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
air discharge
test method characterized by bringing the test generator discharge tip close to the device under test
(DUT) (3.3); the discharge is by arcing on the DUT
3.2
contact discharge
test method characterized by contact of the test generator discharge tip with the device under test
(DUT) (3.3), where discharge is initiated by the generator discharge switch
1
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ISO/FDIS 10605:2023(E)
3.3
DUT
device under test
single component or combination of components as defined to be tested
3.4
direct discharge
discharge directly on the device under test (DUT) (3.3)
3.5
ESD
electrostatic discharge
transfer of electrostatic charge between bodies at different potentials occurring prior to contact or
induced by an electrostatic field
3.6
ESD generator
instrument that simulates the human ESD model (3.9)
3.7
GP
ground plane
flat conductive surface (3.11) whose potential is used as a common reference
Note 1 to entry: The test voltage should also be referenced to the ground plane.
3.8
holding time
interval of time within which the decrease of the test voltage due to leakage, prior to the discharge, is
10 %
3.9
human ESD model
network of passive elements and voltage that characterizes a charged person as a source of an
electrostatic discharge (3.5) for automotive conditions
3.10
indirect discharge
discharge to a coupling plane near the device under test (DUT) (3.3)
Note 1 to entry: Discharge current produces a transient field that might affect the DUT. Indirect discharge
simulates discharge by a human being on items near the DUT.
3.11
surface
uninterrupted housing area, gap or opening
EXAMPLE Switches, tip switches, points of contact, air vents, speaker openings.
4 Test conditions
The user shall specify the test severity level(s) for the component and vehicle tests. Suggested test levels
are included in Annex C.
Standard test conditions shall be as follows:
— ambient temperature: (25 ± 10) °C;
— relative humidity between 20 % and 60 %.
If other values are agreed to by the users, these values shall be documented in the test report.
2
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ISO/FDIS 10605:2023(E)
5 Test location
Shielded enclosures or even absorber-lined shielded enclosures are allowed but not required.
NOTE ESD testing creates transient fields, which can interfere with sensitive electronic devices or receivers,
even at a distance of a few meters. It is advisable that this be considered when choosing a test location.
6 Test apparatus and instrumentation
6.1 ESD generator
The ESD generator characteristics shall be as specified in Table 1.
Table 1 — General ESD generator parameters
Parameter Characteristic
a
Output voltage range contact discharge mode 2 kV to 15 kV, or as required in the test plan
a
Output voltage range air discharge mode 2 kV to 25 kV, or as required in the test plan
Output voltage accuracy ≤ 5 %
Output polarity Positive and negative
Rise time of short circuit current in contact discharge mode (10 %
0,7 ns to 1,0 ns
to 90 %)
Holding time ≥ 5 s
b
Storage capacitances 150 pF, 330 pF
b
Discharge resistances 330 Ω, 2 000 Ω
a
See examples in Annex C.
b
Storage capacitance and discharge resistance are nominal values, ESD generator shall meet discharge current
specifications in 6.3.
NOTE When an ESD generator is supplied from an external supply source, AC or DC, or controlled by a
separate unit and this (these) cable(s) is (are) not combined (bundled) with the ESD generator discharge return
cable, unintended current can flow through this (these) cable(s).
The ESD generator should be able to generate a repetition rate of at least 20 discharges per second
down to manual control without any degradation of the discharge current waveform.
The tip voltage should be checked continuously by the generator internal tip voltage supervision.
For contact discharge a grounded discharge resistor with 1 MΩ ±20 % resistance from tip to ground
is recommended and prevents pre­pulse­voltage occurrence which can lead to non­reproducible test
results; proper fixing of resistor shall not change the current shape.
In cases where a 2 m length of the discharge return cable is insufficient (e.g. for tall DUTs), a length not
exceeding 3 m may be used and compliance with the waveform specifications shall be guaranteed (e.g.
by the manufacturer or from calibration).
The ESD generator protective earth terminal shall be terminated to the facility protective earth.
Guidance on automatic operated ESD testing can be found in Annex G.
6.2 Discharge tips
6.2.1 Contact discharge tip
The discharge tip for contact mode ESD is shown in Figure 1. The tip is typically made of stainless steel.
For contact discharge to pins the discharge tip shape can be varied. The diameter of the tip shall be
12 ± 1 mm. Springs for safe contact and a bending of not more than 90° are possible. The current shape
3
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ISO/FDIS 10605:2023(E)
with modified tip shall comply with the given specification. The angle “alpha” shall be between 25° and
40°.
Dimensions in millimetres
Key
1 sharp point
Figure 1 — Contact discharge tip of the ESD generator
6.2.2 Air discharge tip
The discharge tip for air discharge mode ESD is shown in Figure 2.
Dimensions in millimetres
Key
1 body of simulator
NOTE For air discharge at test voltages higher than 15 kV, a larger tip (e.g. 20 mm to 30 mm diameter) can be
used to avoid pre­discharge.
Figure 2 — Air discharge tip of the ESD generator
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ISO/FDIS 10605:2023(E)
6.3 Discharge current specifications
6.3.1 Contact discharge mode current specifications
The contact discharge mode currents shall be verified according to Annex A. The contact discharge
mode waveform parameters for each discharge network shall be within the value ranges specified in
Table 2.
Table 2 — Contact discharge mode current specifications
Nominal capac-
Peak current/ Current at t / Current at t /
1 2
itance/ resist- Tolerance Tolerance Tolerance
test voltage test voltage test voltage
ance values
A/kV % A/kV % A/kV %
2 1
150 pF / 330 Ω 3,75 ±10 ±30 ±30
(at t = 30 ns) (at t = 60 ns)
1 2
2 1
330 pF / 330 Ω 3,75 ±10 ±30 ±30
(at t = 65 ns) (at t = 130 ns)
1 2
0,275 0,15
+30
150 pF / 2 000 Ω 3,75 ±30 ±50
 0
(at t = 180 ns) (at t = 360 ns)
1 2
0,275 0,15
+30
330 pF / 2 000 Ω 3,75 ±30 ±50
 0
(at t = 400 ns) (at t = 800 ns)
1 2
NOTE 1 The peak current level is taken from the measurement system without any data interpolation.
NOTE 2 The target used with this measurement system fulfils the requirements of Clauses A.1 and A.2. An example is
defined in Annex B.
The measurement times (30 ns, 60 ns, 65 ns, 130 ns, 180 ns, 360 ns, 400 ns and 800 ns) are derived
from the resistance-capacitive (RC) time constant − 40 % (current t ) and +20 % (current t ), to define
1 2
two values on the falling slope of the current pulse in accordance with IEC 61000­4­2.
Examples of calculated contact discharge waveforms in accordance with the specifications in Table 2
are given in Figures 3 a) and 3 b).
a) Calculated contact discharge waveform of ESD generator
(for 150 pF / 330 pF, 330 Ω and 1 kV)
5
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ISO/FDIS 10605:2023(E)
Key
X time [ns]
Y current [A]
1 150 pF, 330 Ω
2 330 pF, 330 Ω
3 150 pF, 2 kΩ
4 330 pF, 2 kΩ
b) Calculated contact discharge waveform of ESD generator
(for 150 pF/330 pF, 2 kΩ and 1 kV)
Figure 3 — Calculated contact discharge waveform of ESD generator
6.3.2 Air discharge mode current specifications
Information on possible air discharge generator verification procedures is given in Annex E.
6.4 Ground plane
The GP (ground plane) shall be metallic sheets (e.g. copper, brass or aluminium) and have a minimum
thickness of 0,25 mm.
NOTE If aluminium is used, care is taken that oxidation does not prevent a good ground connection.
The minimum width of the GP shall be 800 mm, or the width of the entire underneath of the test setup
[DUT and associated equipment (e.g. harness including supply lines, load simulator located on the test
bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever is the larger.
The minimum length of the ground plane shall be 1 600 mm or the length of the entire underneath
of the test setup [DUT and associated equipment (e.g. harness including supply lines, load simulator
located on the test bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever
is the larger.
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ISO/FDIS 10605:2023(E)
In case of very large DUT, the above GP dimensions/shape can be adapted by using a GP extension.
Connection between an already existing GP and a GP extension should have a DC resistance lower or
equal to 2,5 mΩ.
6.5 Field coupling plane
Details of the construction of the field coupling plane can be found in Annex F.
6.6 Insulating block
Insulating blocks, if used, shall be constructed of clean non-hygroscopic material. The relative
permittivity should range between 1 and 5 (e.g. polyethylene). The blocks shall be (50 +/- 5) mm in
height and extend beyond the test setup by at least 20 mm on all sides.
6.7 Dissipative mat
7 9
Dissipative support from a material which has a surface resistivity between 10 Ω per square and 10 Ω
per square with a height between 2 mm and 3 mm.
6.8 Uncertainty
Refer to IEC 61000-4-2:2
...

1 ISO/TC22/SC32/WG3 N 3203
2 Date : 2022-12-21
3 ISO/ for FDIS 10605:2023(E)
4 Date : 2023-02
5 Secretariat: JISC
6 ISO TC 22/SC 32/WG 3
7 Road vehicles — Test methods for electrical disturbances from electrostatic discharge
8 Véhicules routiers — Méthodes d'essai des perturbations électriques provenant de décharges
9 électrostatiques
10




11
12 Warning for WDs and CDs
13 This document is not an ISO International Standard. It is distributed for review and comment. It is
14 subject to change without notice and may not be referred to as an International Standard.
15 Recipients of this draft are invited to submit, with their comments, notification of any relevant patent
16 rights of which they are aware and to provide supporting documentation.
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© ISO 2022

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© ISO #### – All rights reserved
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part
of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or
mechanical, including photocopying, or posting on the internet or an intranet, without prior written
permission. Permission can be requested from either ISO at the address below or ISO’s member body
in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
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ISO/draft for FDIS 10605                                                 ISO/TC22/SC32/WG3 N
3203ISO/FDIS 10605:2023(E)
Contents Page
Foreword . vi
Introduction. viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test conditions . 3
5 Test location . 3
6 Test apparatus and instrumentation . 3
6.1 ESD generator . 3
6.2 Discharge tips . 4
6.2.1 Contact discharge tip . 4
6.2.2 Air discharge tip . 4
6.3 Discharge current specifications . 6
6.3.1 Contact discharge mode current specifications . 6
6.3.2 Air discharge mode current specifications . 9
6.4 Ground plane . 9
6.5 Field coupling plane . 9
6.6 Insulating block . 10
6.7 Dissipative mat . 10
6.8 Uncertainty . 10
7 Discharge modes . 10
7.1 General . 10
7.2 Contact discharge mode . 10
7.3 Air discharge mode . 10
8 Component immunity test method (powered-up test) . 10
8.1 General . 10
8.2 Test plan . 11
8.3 Test procedure for direct discharges . 11
8.3.1 General . 11
8.3.2 Test set-up . 11
8.3.3 Test method . 15
8.4 Test procedure for indirect discharges . 16
8.4.1 General . 16
8.4.2 Test set-up . 16
8.4.3 Test method . 20
9 Component packaging and handling test method (unpowered test) . 20
9.1 General . 20
9.2 Test plan . 21
9.3 Test procedure . 21
9.3.1 General . 21
9.3.2 Test set-up . 21
9.3.3 Test method . 22
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ISO/FDIS 10605:2023(E)
10 Vehicle test method . 23
10.1 General . 23
10.2 Test plan . 23
10.3 Test procedure . 24
10.3.1 General . 24
10.3.2 Test set-up . 24
10.3.3 Test method . 26
11 Test report . 27
Annex A (normative) Current target specification and verification of ESD generator . 28
Annex B (informative) Standard target drawings and target verification method . 33
Annex C (informative) Function performance status classification (FPSC) . 56
Annex D (informative) Test method guidance — Generator resistor value and air or contact
discharge . 61
Annex E (informative) Rationale for air discharge generator verification . 64
Annex F (informative) Description of field coupling fixture for direct and indirect discharge
to powered-up DUT. 66
Annex G (informative)  Test method guidance – automatic operated ESD testing . 69
Bibliography 75
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ISO/draft for FDIS 10605                                                 ISO/TC22/SC32/WG3 N
3203ISO/FDIS 10605:2023(E)
Foreword

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ISO/FDIS 10605:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This third edition cancels and replaces the second edition (ISO 10605:2008) + cor 1:2010 + amd 1:2014),
which has been technically revised. It also incorporates the Amendment ISO 10605:2008:/Amd.1 2014
and the Technical Corrigendum ISO 10605:2008/Cor 1:2010.
The main changes are as follows:
— introduction of alternative test set-up with field coupling plane for direct and indirect discharges on
component (powered-up test);
— minimum number of discharges changed from 50 to 10 for indirect discharge on component
(powered-up test);
— interval between successive single discharges changed from 50 ms to 1 s for indirect discharge on
component (powered-up test);
— addition of a ground connection for discharges on DUT pins for Component packaging and handling
test method (unpowered test);
— optional test set-up and procedure for electronic modules (powered-up test) moved from Annex to
main body;
— addition of new Annex G.
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ISO/draft for FDIS 10605                                                 ISO/TC22/SC32/WG3 N
3203ISO/FDIS 10605:2023(E)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO2022 – All rights reserved

© ISO 2023 – All rights reserved vii

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ISO/FDIS 10605:2023(E)
Introduction
The electrostatic discharge, due to former charge build-ups generated, for example, when moving about
inside a vehicle or getting out of it, has assumed greater significance with the increase of vehicle electronic
modules. Tests simulating the electrostatic discharge of humans, in common use by various industries,
were examined and it was determined that they were not fully applicable to the automotive environment.
As a consequence, tests tailored to the automotive environment were developed.
Tests that simulate an electrostatic discharge (ESD) into a vehicle electrical system are based on the
human ESD model. Sensitive electrical devices can be adversely affected by energy either coupled or
radiated from electrostatic discharges.
This document describes ESD tests that are applicable to both automotive electronic modules and
vehicles.
viii © ISO 2023 – All rights reserved

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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 10605:2023(E)

Road vehicles — Test methods for electrical disturbances from
electrostatic discharge
1 Scope
This document specifies the electrostatic discharge (ESD) test methods necessary to evaluate electronic
modules intended for vehicle use. It applies to discharges in the following cases:
— ESD in assembly;
— ESD caused by service staff;
— ESD caused by occupants.
This document describes test procedures for evaluating both electronic modules on the bench and
complete vehicles. This document applies to all types of road vehicles regardless of the propulsion system
(e.g. spark-ignition engine, diesel engine, electric motor).
The test for electronic modules on the bench described in this standarddocument applies to any DUT
(powered by an unshielded power system, DUT powered by a shielded power system, self-powered DUT,
etc.).
This document does not apply to pyrotechnic modules.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11452--1, Road vehicles — Component test methods for electrical disturbances from narrowband
radiated electromagnetic energy — Part 1: General principles and terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11452-1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
air discharge
test method characterized by bringing the test generator discharge tip close to the device under test (DUT)
(3.3); the discharge is by arcing on the DUT
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ISO/FDIS 10605:2023(E)
3.2
contact discharge
test method characterized by contact of the test generator discharge tip with the DUT,device under test
(DUT) (3.3), where discharge is initiated by the generator discharge switch
3.3
DUT
device under test
DUT
single component or combination of components as defined to be tested
3.4
direct discharge
discharge directly on the DUTdevice under test (DUT) (3.3)
3.5
ESD
electrostatic discharge
ESD
transfer of electrostatic charge between bodies at different potentials occurring prior to contact or
induced by an electrostatic field
3.6
ESD generator
instrument that simulates the human ESD model (3.9)
3.7
GP
ground plane
GP
flat conductive surface (3.11) whose potential is used as a common reference
Note 1 to entry: The test voltage should also be referenced to the ground plane.
3.8
holding time
interval of time within which the decrease of the test voltage due to leakage, prior to the discharge, is
10 %
3.9
human ESD model
network of passive elements and voltage that characterizes a charged person as a source of an
electrostatic discharge (3.5) for automotive conditions
3.10
indirect discharge
discharge to a coupling plane near the device under test (DUT) (3.3)
NOTE Note 1 to entry: Discharge current produces a transient field that might affect the DUT. Indirect discharge
simulates discharge by a human being on items near the DUT.
3.11
surface
uninterrupted housing area, gap or opening
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ISO/FDIS 10605:2023(E)
EXAMPLE Switches, tip switches, points of contact, air vents, speaker openings.
4 Test conditions
The user shall specify the test severity level(s) for the component and vehicle tests. Suggested test levels
are included in Annex C.
Standard test conditions shall be as follows:
— ambient temperature: (25 ±± 10) °C;
— relative humidity between 20 % and 60 % %.
If other values are agreed to by the users, these values shall be documented in the test report.
5 Test location
Shielded enclosures or even absorber-lined shielded enclosures are allowed but not required.
NOTE ESD testing creates transient fields, which can interfere with sensitive electronic devices or receivers, even
at a distance of a few meters. It is advisable that this be considered when choosing a test location.
6 Test apparatus and instrumentation
6.1 ESD generator
The ESD generator characteristics shall be as specified in Table 1.
Table 1 — General ESD generator parameters
Parameter Characteristic
2 kV to 15 kV, or as required in the test
Output voltage range contact discharge mode
a
plan
2 kV to 25 kV, or as required in the test
Output voltage range air discharge mode
a
plan
Output voltage accuracy ≤ 5 %
Output polarity Positive and negative
Rise time of short circuit current in contact discharge mode (10 % to
0,7 ns to 1,0 ns
90 %)
Holding time ≥ 5 s
b
Storage capacitances 150 pF, 330 pF
b
Discharge resistances 330 Ω,Ω, 2 000 ΩΩ
a
See examples in Annex C.
b
Storage capacitance and discharge resistance are nominal values, ESD generator shall meet discharge current
specifications in 6.3.
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ISO/FDIS 10605:2023(E)
NOTE 1 When an ESD generator is supplied from an external supply source, AC or DC, or controlled by a separate
unit and this (these) cable(s) is (are) not combined (bundled) with the ESD generator discharge return cable,
unintended current can flow through this (these) cable(s).
The ESD generator should be able to generate a repetition rate of at least 20 discharges per second down
to manual control without any degradation of the discharge current waveform.
The tip voltage should be checked continuously by the generator internal tip voltage supervision.
For contact discharge a grounded discharge resistor with 1MΩ1 MΩ ±20 % resistance from tip to ground
is recommended and prevents pre-pulse-voltage occurrence which can lead to non-reproducible test
results; proper fixing of resistor shall not change the current shape.
In cases where a 2 m length of the discharge return cable is insufficient (e.g. for tall DUTs), a length not
exceeding 3 m may be used and compliance with the waveform specifications shall be guaranteed (e.g.
by the manufacturer or from calibration).
The ESD generator protective earth terminal shall be terminated to the facility protective earth.
Guidance on automatic operated ESD testing can be foundedfound in Annex G.
6.2 Discharge tips
6.2.1 Contact discharge tip
The discharge tip for contact mode ESD is shown in Figure 1. The tip is typically made of stainless steel.
For contact discharge to pins the discharge tip shape can be varied. The diameter of the tip shall be
12± ± 1 mm. Springs for safe contact and a bending of not more than 90° are possible. The current shape
with modified tip shall comply with the given specification. The angle “alpha” shall be between 25° and
40°.
Dimensions in millimetres
α
1


Key
1 sharp point

1 sharp point
Figure — 1 — Contact discharge tip of the ESD generator
6.2.2 Air discharge tip
The discharge tip for air discharge mode ESD is shown in Figure 2.
Dimensions in millimetres
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ISO/FDIS 10605:2023(E)
1
SR4
Ø8 ± 1
Ø12 ± 1
50 ± 1



Key
1 body of simulator
1 body of simulator
NOTE For air discharge at test voltages higher than 15 kV, a larger tip (e.g. 20 mm to 30 mm diameter) can be
used to avoid pre-discharge.
Figure 2 — Air discharge tip of the ESD generator
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ISO/FDIS 10605:2023(E)
6.3 Discharge current specifications
6.3.1 Contact discharge mode current specifications
The contact discharge mode currents shall be verified according to Annex A. The contact discharge mode
waveform parameters for each discharge network shall be within the value ranges specified in Table 2.
Table 2 — Contact discharge mode current specifications
Nominal
Current at t / Current at t /
capacitance/ Peak current/
1 2
Tolerance Tolerance Tolerance
resistance test voltage
test voltage test voltage
values
 A/kV % A/kV % A/kV %
2 1
150 pF / 330 ΩΩ 3,75 ± ±10 ± ±30 ± ±30
(at t == 30 ns) (at t == 60 ns)
1 2
1
2
(at
3,75
330 pF / 330 ΩΩ ± ±10 ± ±30 ± ±30
(at t == 65 ns)
1
t == 130 ns)
2
0,275 0,15
150 pF /
+30
(at (at
3,75 ± ±30 ± ±50

 0
2 000 ΩΩ
t == 180 ns) t == 360 ns)
1 2
0,275 0,15
330 pF /
+30
(at (at
3,75 ± ±30 ± ±50
 0
2 000 ΩΩ
t == 400 ns) t == 800 ns)
1 2
NOTE 1 The peak current level is taken from the measurement system without any data interpolation.
NOTE 2 The target used with this measurement system fulfils the requirements of Clauses A.1 and A.2. An example is defined
in Annex B.
The measurement times (30 ns, 60 ns, 65 ns, 130 ns, 180 ns, 360 ns, 400 ns and 800 ns) are derived from
the resistance-capacitive (RC) time constant −− 40 % (current t ) and + +20 % (current t ), to define two
1 2
values on the falling slope of the current pulse in accordance with IEC 61000-4-2.
Examples of calculated contact discharge waveforms in accordance with the specifications in Table 2 are
given in Figures 3 a) and 3 b).


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ISO/FDIS 10605:2023(E)

Key

Deleted Cells
1 150 pF, 330 Ω


2 330 pF, 330 Ωa) Calculated contact discharge waveform of ESD
generator
(for 150 pF / 330 pF, 330 Ω and 1 kV)
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2023 – All rights reserved

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ISO/FDIS 10605:2023(E)

Key
Xti time [ns]


Y current [A]


1 150 pF, 330 Ω
2 330 pF, 330 Ω
3 150 pF, 2 kΩ
4 330 pF, 2 kΩ
b) Calculated contact discharge waveform of ESD generator
(for 150 pF/330 pF, 2 kΩ and 1 kV)
a) Calculated contact discharge waveform of ESD generator
(for 150 pF / 330 pF, 330 Ω and 1 kV)
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ISO/FDIS 10605:2023(E)


Key
1 150 pF, 2 kΩ
2 330 pF, 2 kΩ
X time [ns]
Y current [A]

b) Calculated contact discharge waveform of ESD generator
(for 150 pF/330 pF, 2 kΩ and 1 kV)
Figure 3 — Calculated contact discharge waveform of ESD generator
6.3.2 Air discharge mode current specifications
Information on possible air discharge generator verification procedures is given in Annex E.
6.4 Ground plane
The GP (ground plane) shall be metallic sheets (e.g. copper, brass or aluminium) and have a minimum
thickness of 0,25 mm.
NOTE If aluminium is used, care is taken that oxidation does not prevent a good ground connection.
The minimum width of the GP shall be 800 mm, or the width of the entire underneath of the test setup
[DUT and associated equipment (e.g. harness including supply lines, load simulator located on the test
bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever is the larger.
The minimum length of the ground plane shall be 1 600 mm or the length of the entire underneath of the
test setup [DUT and associated equipment (e.g. harness including supply lines, load simulator located on
the test bench and AN(s)), excluding battery and/or power supply] plus 200 mm, whichever is the larger.
In case of very large DUT, the above GP dimensions/shape can be adapted by using a GP extension.
Connection between an already existing GP and a GP extension should have a d.c.DC resistance lower or
equal to 2,5 mΩ.
6.5 Field coupling plane
Details of the construction of the field coupling plane can be found in Annex F.
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ISO/FDIS 10605:2023(E)
6.6 Insulating block
Insulating blocks, if used, shall be constructed of clean non-hygroscopic material. The relative
permittivity should range between 1 and 5 (e.g. polyethylene). The blocks shall be (50 +/- 5) mm in height
and extend beyond the test setup by at least 20 mm on all sides.
6.7 Dissipative mat
7
Dissipative support from a material which has a surface resistivity between 10 ΩΩ per square and
9
10 ΩΩ per square with a height between 2 mm and 3 mm.
6.8 Uncertainty
Refer to IEC 61000-4-2:2008, Annex E.
7 Discharge modes
7.1 General
Discharges can be applied by two discharge modes: contact and air. See Annex D for guidance on air
versus contact discharge modes.
7.2 Contact discharge mode
In the case of contact discharges, the discharge tip (see Figure 1) shall touch a conducting point on the
DUT before the discharge switch is actuated.
Where painted surfaces cover a conducting substrate, the following procedure is used. If the coating is
not declared to be an insulating coating by the equipment manufacturer, then the pointed tip of the
generator penetrates the coating so as to make contact with the conducting substrate.
7.3 Air discharge mode
In air discharge mode, the dischar
...