General Specification of Testing Method for Electrostatic Protection in Electronic Production Manufacturing and Using System
1 Scope
This specification specifies the testing methods for electrostatic protection in electronic production manufacturing and using system.
This specification is applicable to the detection for electrostatic protection in electronic production manufacturing and using system, such as: grounding system, ground (mat), wall, workbench, bench mat, work chair, workstation appliance, logistics transfer appliance, packaging supplies, human body electrostatic protection equipment, operation and maintenance tools, ion electrostatic eliminator, etc.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 1410-1989 Methods of Test for Volume Resistivity and Surface Resistivity of Solid Electrical Insulating Materials
GB 4385-1995 Technical Requirements for Antistatic Footwear and Conductive Footwear
GB 12014-1989 Working Clothing of Anti-electrostatic
GB/T 12703-1991 Electrostatic Test Methods for Textile
GB/T 15463-1995 Electrostatic Safety Terminology
GJB 2605-1996 Barrier Materials, Flexible, Electrostatic Protective, Heat Sealable
GJB 3007-1997 Requirements for Electrostatic Discharge Protected Area
GJB/Z 86-1997 Handbook for Electrostatic Discharge Protective Packaging
GJB/Z 105-1995 Electrostatic Discharge Control Handbook for Protection of Electronic Products
SJ/T 10147-1991 Package Tubes against Static for Integrated Circuits
SJ/T 10796-2001 General Specification for Raised Access Floors for Electrostatic Protection
SJ/T 11159-1998 Test Methods for Electrostatic Behaviour or Floor Coverings and Installed Floors
SJ/T 11236-2001 General Specification for Electrostatic Protection Covers
SJ/T 11277-2002 General Specification for Reusable Containers and Boxes for Electrostatic Protection
SJ/T 11294-2003 General Specification of Floor Coating for Electrostatic Protection
SJ/T 31469-2002 Construction and Acceptance Code for Anti-static Floor
YD/T 754-1995 General Specification for Electrostatic Protection of Telecommunication Room
IEC 61340-5-1-2001 Electrostatics — Part 5-1: Protection Electronic Devices from Electrostatic Phenomena — General Requirements
3 Terms and Definitions
For the purposes of this specification, the following terms and definitions apply.
3.1
resistance of grounding system
sum of the resistance between test surface and ground point of the object under test
3.2
testing point
selected point to place the test electrode (or stylus) during the test
3.3
electrostatic potential
standard function of an electrostatic field whose gradient is prefixed with a minus sign equal to the field intensity. The electrostatic potential at a point in electrostatic field is equal to the power required to move the unit positive charge from that point to infinity, and it is also equal to the potential energy of the unit positive charge at that point
3.4
surface resistivity
ratio of the intensity of direct current field along the surface current direction of sample to the surface conduction current per unit length
3.5
volume resistivity
ratio of the intensity of direct current field along the current direction of sample volume to the current density
3.6
electrostatic discharge
the phenomenon that partial or complete disappearance of charge on a charged body due to ionization of dielectric when the field strength around the charged body exceeds the dielectric breakdown field strength
3.7
electrostatic charge
one of the inherent properties of certain elementary particles, such as protons and electrons, that make up physical matter. Electric charges are divided into positive and negative charges
3.8
ground
object that can supply or accept large amounts of electric charges, such as earth, the hull of a ship, or a vehicle
3.9
hard ground
direct ground
a grounding mode in which a direct conductive connection is made to a grounding pole
3.10
soft ground
a grounding method in which a set of resistors is connected to a grounding pole by limiting the current flowing through the human body to a safe value
3.11
voltage to earth
potential difference between a charged body and the ground
3.12
static decay time
the time required for the given percentage when the voltage of charged body decays to its initial value
3.13
static shielding material
material that prevents electrostatic discharge or electrostatic field from passing through or penetrating
3.14
electrostatic conductive material
materials with the following properties:
surface conductive: materials with surface resistivity less than 1×105 Ω/□ or materials with surface resistance less than 1×106 Ω
volume conductive: material with volume resistivity less than 1×104 Ω·cm, material with volume resistance less than 1×106 Ω
3.15
electrostatic dissipative material
materials with the following properties:
surface conductive: materials with surface resistivity greater than or equal to 1×105 Ω/□ but less than 1×1012 Ω/□; or materials whose surface resistance is greater than or equal to 1×106 Ω but less than 1×109 Ω.
volume conductive: material with volume resistivity greater than or equal to 1×104 Ω·cm but less than 1×1011 Ω·cm; or materials whose volume resistance is greater than or equal to 1×106 Ω but less than 1×109 Ω.
3.16
electrostatic leakage
the phenomenon that the electrostatic charge on electrified body disappeared partially or completely through the interior or surface of charged body
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
3.18
3.19
3.20
3.21
3.22
3.23
3.24
3.25
3.26
3.27
3.28
3.29
4 General Requirements
4.1 Testing conditions
4.2 Test apparatus
4.3 Test specifications
5 Tribo-electrification Voltage Test
6 Resistance Test
6.1 Point-to-point resistance and system resistance test
6.2 Antistatic earth resistance
6.3 Surface resistance (rate) and volume resistance (rate) tests
7 Test of Static Decay Time
8 Electrostatic Shielding Performance Test
8.1 Test apparatus
8.2 Sample (bag) size requirements
8.3 Test requirements
9 Electrostatic Capacity Test
9.1 Test equipment
9.2 Test
10 Tests of All Kinds of Electrostatic Protection Products (Materials)
10.1 Test of electrostatic protection movable floor
10.2 Test of electrostatic protection panel (polymer organic)
10.4 Wrist band test
10.5 Human body comprehensive resistance test
10.6 Test method of static protective footwear resistance
10.7 Resistance tests of gloves, finger gloves, caps, socks, ankle straps and tools (brushes)
10.8 Test method of static protective clothing
10.9 Test method for package tubes against static for integrated circuits
10.10 Test method for flexible packages
10.11 Test method for reusable containers and boxes
10.12 Test method for curtains
10.13 Test method for electrostatic protection storage racks
10.14 Test method for working stations and logistics conveyors
10.15 Wall
10.16 Test methods for electrostatic protection agents (liquid, wax, glue)
10.17 Test methods for chairs, workbenches and running cars
10.18 Ground and mat
10.19 Test method for ion electrostatic eliminator
Annex A (Normative) Test Specifications
