GB/Z 37977.54-2026Electrostatics - Part 5-4: Protection of electronic devices from electrostatic phenomena - Compliance verification (English PDF)

Foreword

This document is a standard or guiding technical document.

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document is Part 5-4 of GB/T 37977 "Electrostatics". GB/T 37977 has the following parts published.

---Part 2-1.Test methods for the static charge dissipation capability of materials and products;

---Parts 2-3.Test methods for resistance and resistivity of antistatic solid planar materials;

---Part 3-2.Simulation Methods for Electrostatic Effects. Electrostatic Discharge Test Waveforms of Machine Model (MM);

---Part 4-1.Standard Test Methods for Specific Applications. Resistance of Floor Coverings and Assembled Floors;

---Part 4-3.Standard Test Methods for Footwear in Specific Applications;

---Part 4-4.Standard Test Methods for Specific Applications - Electrostatic Classification of Flexible Medium Bulk Containers (FIBCs);

---Parts 4-5.Standard test methods for specific applications; characterization methods for electrostatic protection properties of human/shoe/ground systems;

---Parts 4-6.Standard test method wristbands for specific applications;

---Parts 4-8.Standard Test Methods for Electrostatic Discharge Shielding Bags in Specific Applications;

---Parts 4-9.Standard test methods for clothing in specific applications;

---Part 5-1.General requirements for electrostatic discharge protection of electronic devices;

---Part 5-4.Electrostatic Discharge (ESD) Protection Compliance Verification of Electronic Devices;

---Part 6-1.Static Electricity Control in Medical, Commercial and Public Places (Medical and Health)

This document is modified to adopt IEC TS61340-5-4:2021 "Electrostatics - Part 5-4.Verification of compliance of electronic devices with electrostatic protection". certificate".

The technical differences between this document and IEC TS61340-5-4:2021, and the reasons therefor, are as follows.

---The terms and definitions for "compliance verification" and "electrostatic discharge sensitive products" have been added as needed (see 3.1 and 3.3);

---Added the instruction "Users should consider the lowest relative humidity level of the environment, under which certain measurements are performed," enabling integration with electronic devices.

It should match the general requirements for electrostatic discharge protection (see Chapter 5);

---The original text regarding the decay time of the charging plate monitor (CPM) under non-ionization conditions had different requirements of 1 minute and 5 minutes. This requirement should be changed... The 5-minute interval has been uniformly changed to 1 minute (see 6.4.1, 6.4.2, and 14.4.1);

---To improve troubleshooting measures for ionization electrostatic eliminators, the following has been added. "Check whether the measurement area and surrounding area are in a working state." "DC high-voltage power supply and radio frequency equipment" [see 14.5m];

---To standardize and improve the testing methods for storage racks, the following has been added. "For testing PCB storage racks, a metal plate can be inserted into the storage rack..." The description of "assisted testing" is added, and a test diagram "Figure 13b) test of moving PCB storage rack" is added [see 15.4f, Figure 13b). The following editorial changes have been made to this document.

---The original informative Appendix C, "Other Test Methods for Antistatic Clothing," has been deleted; subsequent appendice numbering will be adjusted accordingly.

---Add "Figure 2. Schematic diagram of the resistance to ground at the wristband connection point," and adjust the numbering of other figures accordingly;

---Because isopropanol (IPA) is a Class III hazardous chemical, a flammable liquid with slight toxicity, alcohol is used to replace isopropanol (see B.3.2). B.5.2);

---Delete the last sentence of note 6.12."There is currently no standardized verification of whether this situation has occurred." Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

Introduction

GB/T 37977 "Electrostatics" is a fundamental standard for electrostatics, adopting all IEC 61340 series standards, and aims to define the modes of electrostatic effects.

Methods for testing the antistatic parameters of antistatic materials and products, standard test methods for specific applications, and electrostatic protection of electronic devices.

As well as static electricity control in medical, commercial and public areas, etc. GB/T 37977 is proposed to consist of 17 parts.

---Part 1: Principles and Measurement of Electrostatic Phenomena. The aim is to systematically explain the basic principles, charging mechanisms, and typical discharge phenomena of electrostatics.

This study investigates the types of electricity and the hazards they cause, providing methods for identifying electrostatic risks, protection technologies, and measurement techniques for different application scenarios.

---Part 2-1.Test Methods for the Static Charge Dissipation Capacity of Materials and Products. The purpose is to specify test methods for testing the static charge dissipation capacity of materials and products.

The ability of insulating and static charge dissipation materials and products to dissipate static charge.

---Part 2-3.Test methods for the resistance and resistivity of antistatic solid planar materials. The purpose is to specify test methods for measuring... Test the resistance and resistivity of an antistatic solid planar material. The applicable resistance range is 10^4 ohm to 10^1² ohm.

---Part 3-2.Simulation Methods for Electrostatic Effects. Electrostatic discharge test waveforms using a machine model (MM). The purpose is to specify the use of... The basic requirements for simulating electrostatic discharge current waveforms of MM and the equipment used to generate and verify these waveforms.

---Part 4-1.Standard Test Methods for Floor Coverings and Assembled Floors in Specific Applications. The purpose is to specify test... Test methods are used to test the resistance of floor coverings and installed flooring, including resistance to ground, point-to-point resistance, and vertical resistance. The applicable resistance measurement range is 10^4ohm to 10^1³ohm.

---Part 4-3.Standard Test Methods for Footwear in Specific Applications. The purpose is to specify test methods for testing antistatic footwear. The resistance.

---Part 4-4.Standard Test Methods for Specific Applications - Electrostatic Classification of Flexible Medium Bulk Containers (FIBCs). The purpose is to... Regulations specify flexible intermediate bulk containers (FIBCs) with a volume of 0.25 m³ to 3 m³ for use in hazardous explosive atmospheres. Require.

---Parts 4-5.Standard Test Methods for Specific Applications. Characterization of Electrostatic Protection Properties of Human/Shoe/Ground Systems. The purpose is to... The specified test method is used to evaluate the antistatic performance of human/shoe/ground systems.

---Parts 4-6.Standard Test Methods for Wristbands in Specific Applications. The aim is to clarify the electrical and mechanical properties of the wristband.

The requirements are as follows, along with experimental methods for testing these performance characteristics.

---Parts 4-8.Standard Test Methods for Electrostatic Discharge Shielding Bags in Specific Applications. The purpose is to provide evaluation methods for electrostatic discharge shielding bags. Test methods for the performance of the bag covering.

---Parts 4-9.Standard Test Methods for Specific Applications of Clothing. The purpose is to specify test methods for testing antistatic clothing. The installed resistor.

---Part 5-1.General Requirements for Electrostatic Discharge Protection of Electronic Devices. The purpose is to establish electrostatic discharge management and technical requirements to avoid or prevent electrostatic discharge. Reduce damage to electronic products caused by electrostatic discharge.

---Part 5-2.User Guide for Electrostatic Discharge Protection of Electronic Devices. The purpose is to provide user guidance for developing, implementing, and monitoring devices that comply with [the relevant regulations/standards]. Guidelines for electrostatic discharge control procedures, Part 5-1.

---Part 5-3.Electrostatic Protection of Electronic Devices - Packaging Performance and Requirements for Electrostatic Discharge Sensitive Devices. The purpose is to clarify... The classification of antistatic packaging materials is accurate, protecting electrostatic discharge sensitive devices from damage caused by static electricity.

---Part 5-4.Electrostatic Discharge (ESD) Protection Compliance Verification of Electronic Devices. The aim is to outline the technologies involved in ESD control procedures. Project compliance verification testing methods.

---Part 6-1.Static Electricity Control in Medical, Commercial, and Public Places. The purpose is to regulate static electricity control in medical facilities. Requirements for electrically controlled equipment, materials, and products.

---Part 6-2.Static Electricity Control in Medical, Commercial, and Public Places. The purpose is to regulate public and office spaces.

Requirements for equipment, materials, and products for static electricity control in workplaces.

Compliance verification is the process of monitoring and measuring all elements of an electrostatic discharge (ESD) control procedure. Regular compliance verification testing is essential.

A crucial part of this process is ensuring that preventative measures and equipment are functioning properly within the area, and that ESD control procedures are followed. The requirements of the outline were implemented correctly.

Product certification testing is typically conducted under controlled laboratory conditions, in accordance with relevant standards. Conformity verification is... Under on-site operating conditions, tests should be conducted using methods suitable for user needs. Although the same testing methods as product certification testing can be used... While conformity verification is technically possible, it typically employs simpler equipment and procedures. Accuracy is important, but it should not disrupt normal user operations or affect the trial production. Destructive testing of products is also important.

This document outlines the testing equipment and methods for conformity verification of antistatic products and systems, providing guidance to users in conducting tests and taking appropriate measures.

Appropriate measures should be taken to ensure the continued compliance of antistatic items and systems. Electrostatics, Part 5-4. Electrostatic discharge protection compliance verification of electronic devices

1 Scope

This document describes the test methods for conformity verification of anti-static technical requirements as specified in GB/T 37977.51, etc.

The test methods are based on the GB/T 37977.51, GB/T 37977 and IEC 61340 series standards, and are used for compliance verification. Necessary simplifications should be performed by professionals.

When users refer to this document in their compliance verification plan, they should directly adopt the test methods described in this document without modification. Alternatively, they can use... Users should adjust the conformity verification procedures described in this document according to the requirements of their ESD control procedure outline, provided that the conformity verification... The verification plan records deviations from equipment or procedures.

This document does not specify the frequency of conformity verification tests. For guidance on how users should consider the frequency of conformity verification tests, please refer to Appendix A. This document is not applicable to product certification.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document.

GB/T 31838.3 Dielectric and resistive properties of solid insulating materials - Part 3: Resistive properties (DC method) - Surface resistivity and surface resistance Surface resistivity (GB/T 31838.3-2019, IEC 62631-3-2:2015, IDT)

GB/T 37977.23 Electrostatics Part 2-3.Test methods for resistance and resistivity of antistatic solid planar materials (GB/T 37977.23-2019,IEC 61340-2-3:2000,IDT)

GB/T 37977.51 Electrostatics - Part 5-1.General requirements for electrostatic protection of electronic devices (GB/T 37977.51-2023, IEC 61340-5-1:2016, IDT)

IEC 61340-4-7 Electrostatics - Part 4-7.Standard test methods for ionization in specific applications

3 Terms and Definitions

The terms and definitions defined in GB/T 37977.51, as well as the following terms and definitions, apply to this document.