ANSI ESD S8.1-2017 pdf free download – For the Protection of Electrostatic Discharge Susceptible Items – Symbols – ESD Awareness.
1.0 PURPOSE AND SCOPE1.1 Purpose
The purpose of this document is to standardize commonly available and in-use symbols and toclarify the meaning of each of these symbols.
The correct usage of symbols will eliminate confusion between symbols that indicate that an itemor material is ESD susceptible and those that indicate that an item is designed to afford somedegree of ESD protection.This symbol standard is developed in accordance with internationalgraphical guidelines and standards.
1.2 Scope
Three symbols are covered in this document. The first indicates that an electrical or electronicdevice or assembly is susceptible to damage from an ESD event if not properly handled.Thesecond indicates that the material or product on which the symbol is displayed is intended toprovide some level of protection to ESD susceptible devices or assemblies.The third indicatesthe location of an ESD common point ground terminal or connection point.
The application of these ESD symbols on products is at the discretion of the supplier and doesnot constitute or imply a specific level of product performance.
2.0 REFERENCED PUBLICATIONS
Unless otherwise specified,the following documents of the latest issue,revision or amendmentform a part of this standard to the extent specified herein:
ESD ADV1.0,ESD Association Glossary of Terms2
ANSI/ESDA/JEDEC JS-o01 – ESDA/JEDEC Joint Standard for Electrostatic Discharge SensitvityTesting – Human Body Model (HBM)-Component Level2
ANSIESD S6.1,Grounding2
Softcopy artwork is available at www.esda.org.
3.0 DEFINITIONS
The following definition shall apply for the purposes of this standard in addition to those specifiedin the ESD Association Glossary of’Terms,available for complimentary download atwww.esda.org:
common point ground.A grounded device or location where the conductors of one or moretechnical elements are bonded.
When it is necessary to shrink the symbol due to the size of the item on which the symbol is placed, all detail possible should be included in the symbol. This symbol should not be decreased in size to less than 1 2 mm x 1 2 mm (0.5 inch x 0.5 inch), except in cases where available space is severely limited. See Figure 1 B.
This symbol may incorporate an alphanumeric character to indicate the ESD sensitivity (ESDS) classification of the device or assembly. These classifications should be in accordance with the ESD Sensitivity Components Classification of the referenced test standard. The ESDS classification, if used, should be placed in the central area of the symbol as indicated in Figure 1 C.
4.2.1 Color
The color red shall not be used because it suggests a hazard to personnel.
The preferred color is a yellow hand and slash on a black background.
5.0 ESD PROTECTIVE SYMBOL
The ESD protective symbol differs from the ESD susceptibility symbol by the addition of an arc around the outside of the triangle and the omission of the slash across the hand and the triangle.
5.1 Application
|The ESD protective symbol may be used to identify items that are specifically designed to provide ESD protection for ESDS assemblies and devices. Examples of these are packaging, ESD protective clothing, and personnel grounding equipment such as wrist straps, footwear, and footwear grounding devices. The ESD protective symbol may also be used on items designed to replace static generative materials. Examples of these items are ESD protective work station equipment, trash can liners, and chairs. The item is to be ESD protective or non-static generative by design. The symbol shall not be used on ESD susceptible devices or assemblies. Refer to Section 4.0 of this standard.ANSI ESD S8.1 pdf download.