ESD Risk Control in Industry

Goals

formation-objectifs-seointro ESD Risk Control in Industry :

At the end of this training course, trainees will be able to implement effective and appropriate ESD protection on electronic workstations.
The aim of this training course is to:
understand the ESD phenomenon
be aware of the risks associated with ESD
be familiar with standardisation
be able to define, implement and monitor appropriate ESD protection

Program

1 – Introduction
• Static charge: a well-known phenomenon
• Historical background
• Electrostatic machines
• Static electricity today
• Typical direct discharges

2 – The physical phenomenon
• Charge and discharge phenomenon
• Charges in a metal and in an insulator
• Triboelectricity and other modes of charge
• Triboelectric series: principles and use
• Major role of people in the ESD phenomenon in industry

3 – Physical data
• Formulas used in electrostatics
• Equivalent electrical diagram of the human body: resistance and capacitance
• Charge potentials according to soil type
• Influence of ambient humidity
• Devices for measuring static charge
• Measuring the charge of people
• Walker test
• Examples
• Influence of body position
• Typical charging and discharging times
• Examples of discharge current values

4 – Component failure
• ESD-sensitive components
• ESD-insensitive components
• Sensitivity thresholds of electronic components
• Different discharge modes on components
• HBM and CDM models: principle and application
• Consequences of ESD on semiconductors
• Component failure modes
• Latent failures
• Component immunity testing according to HBM and CDM models
• Use of component ESD classes

5 – Other consequences of ESD
• Explosive atmospheres
• Use of static electricity in industrial processes
• Definition and effects of indirect discharges

6 – Organisation of ESD protection
• ESD standardisation
• Use of the IEC 61340-5-1 guide
• ESD control plan
• Definition of an protected area (EPA)
• Role of the ESD coordinator

7 – Controlling the charge of people in an EPA
• ESD objective: limit the charge• Examples and measurements of a person's charge potential• Charge flow to earth• Classification of materials according to their leakage capacity
• ESD footwear
• ESD heel pads
• Checking footwear and heel pads
• ESD treatment of floors
• Use of IEC 61340-5-1
• Surface resistance: definition, measurement, limits
• Point-to-point resistance: definition, measurement, limits
• Transverse resistance: definition, measurement, limits
• Resistance to earth: definition, measurement, limits
• ESD wristbands
• EPA entry checks
• Role of an ESD gown
• Special case: crossing an EPA without ESD protection

8 – Controlling the charge of objects in an EPA
• Earthing principle
• Connection of metal parts
• Production and testing machines
• Furniture, storage
• Work surfaces
• Insulation in an EPA
• Dissipative materials
• Packaging and storage inside an EPA
• Packaging and storage outside an EPA
• Equipment and tools
• What is prohibited in an EPA

9 – EPA control/audit
• Principle of EPA control
• Analysis of the path of sensitive components
• Periodic checks
• Cards and components in the finished product

10 – Conclusion
• Typical installation of a EPA
• Analysis of photos of good and bad examples