ANSI/ESD S20.20 Standard & Related Documents

Electrostatic Discharge (ESD) and static electricity present costly and even dangerous risks to the electronics, medical, pharmaceutical, packaging, and many other important industries. EOS/ESD Association, Inc. has established an independent third-party certification program to meet the growing global need for technically sound ESD Control Programs. ANSI/ESD S20.20 is a multi-industry standard administered by EOS/ESD Association, Inc. through accredited ISO9000 Certification Bodies that have met the requirements of this program. The Facility Certification Program uses standard control methods and guidance to evaluate a facility's ESD program and ensure ANSI/ESD S20.20 or IEC 61340-5-1 requirements are met.

With more than 32 participating countries, over 1,900 facilities have been certified since the inception of the program. According to the factory Certification Bodies reports, the interest in Certification to ANSI/ESD S20.20 remains strong as well as a high level of inquiries for assistance. The report also shows an interest in individual education as professionals pursue their certification in ESD Control Program Managers with 158 professionals becoming successfully certified. Certification program requirements are based on Standards ANSI/ESD S20.20 and IEC 61340-5-1, with support from related standards, standard test methods, standard practices, and technical reports published by EOS/ESD Association, Inc.

ESDA Association Documents

ANSI/ESD S20.20 (Complimentary Download)
Synopsis of ANSI/ESD Documents
All ESDA ANSI/ESD Complimentary PDF Downloads
ESD Fundamentals

Definitions

ESDS stands for Electrostatic Discharge Sensitive. An electronic-sensitive device is any component that can be damaged by static charges stemming from tools, semiconductors, non-conductors, and even human users.

ESDS Items: Examples of electrostatic-sensitive items include microcircuits, discrete semiconductors, thick and thin film resistors, hybrid devices, printed circuit boards and piezoelectric crystals. It is possible to determine a device's susceptibility and level of sensitivity through simulated ESD events, but these might not reveal the level of sensitivity in a real-life situation. These levels of sensitivity are used to establish a baseline of susceptibility data for comparison of devices with equivalent part numbers from different manufacturers. Characterization of electronic components is identified by two different models: Human Body Model Sensitivity and Charged Device Model Sensitivity.
Human Body Model (HBM) Sensitivity: All devices should be considered HBM sensitive as direct transfer of an electrostatic charge from the human body is one of the most common causes of ESD damage. Human-to-device contact or even proximity can damage the components of an ESDS item. The model to simulate these events is known as HBM. Using a 100 pF capacitor, a charge is discharged through a switching component and 11500-ohm series resistor into the device being tested. If the device does not meet the datasheet parameters using parametric and functional testing, it is deemed to have failed HBM model testing.
Charged Device Model (CDM) Sensitivity: A charge from an ESDS item to a conductive surface at lower potential is also a common cause of ESD damage. During a CDM event, a device becomes charged and enters in contact with another conductive surface at a lower potential, resulting in a rapid discharge. This discharge event can be more damaging than the HBM for some devices. The entire CDM event can take place in less than a nanosecond, and even then, the peak current can reach several tens of amperes causing significant voltage drops and device damage.
Machine Model Sensitivity (MM): The Machine Model of testing is an event where a discharge from an isolated conductor or charged conductive tool rapidly transfers energy to the conductive leads of the device. Isolated charged conductor discharges or simulations of metal-to-metal discharges are better characterized by a CDM event. MM is no longer required for device qualification as it does not give additional information that HBM and CDM events won't give already. However, understanding the control of discharges from charged conductors in a manufacturing environment is still a key element in the ESD control program.

For more information on Machine Model and device targets, see A Case for Lowering Component Level HBM-MM ESD Specifications and Requirements by the industry Council.

Annex C (Informative) - Related Documents

The following documents are listed for reference. Some documents may be discontinued, however, this listing provides a further reference to the documents reviewed by the ESDA organization during the preparation of this standard.

Military I U.S. Government

MIL-STD-3010, "Federal Test Method Standard" (Free PDF)
MIL-PRF-81705, "Barrier Materials, Flexible, Electrostatic Free, Heat Sealable" (Free PDF)
MIL-E-17555, "Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of" (Free PDF)
MIL-STD-1686, "Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrically Initiated Explosive Devices)" (Free PDF)
MIL-HDBK-263, "Electrostatic Discharge Control Handbook for Protection of Electrical and Electronic Parts, Assemblies. and Equipment (Excluding Electrically-initiated Explosive Devices)" (Free PDF)
MIL-M-38510, "General Specification for Military Microcircuits" (Free PDF)
MIL-P-82646, "Plastic Film, Conductive, Heat Sealable, Flexible" (Free PDF)
MIL-PRF-87893, "Workstations, Electrostatic Discharge (ESD) Control" (Free PDF)
MIL-STD-129, "Marking for Shipment and Storage" (Free PDF)
MIL-STD-1285. "Marking of Electrical and Electronic Parts" (Free PDF)
MMA-1985-79. Revision 3, "Standard Test Method for Evaluating Triboelectric Charge Generation and Decay" (Free PDF)

Industry Standards

JESD 625, "Requirements for Handling Electrostatic-Discharge-Sensitive (ESDS) Devices" (Free PDF)
EIA-583, "Packaging Material Standards for Moisture Sensitive Items" (Free PDF)
TR3.O-02-05, "Selection and Acceptance of Air Ionizers"
ESDSIL, "Reliability Analysis Center (RAC) ESD Sensitive Items List"
ELA-471, "Symbol and Label for Electrostatic Sensitive Devices"
IEC 61340-5-1, "Protection of Electronic Devices from Electrostatic Phenomena - General Requirements"
VZAP, "Electrostatic Discharge Susceptibility Data" (Free PDF)
ISO 9001, "Quality management systems - Requirements"

Additional Documentation

Additional EOS/ESD Association, Inc. Control Program Support Documents

For the latest issue, revision or amendment, visit the www.esda.org.

ESD ADV1.0, "ESD Association's Glossary of Terms"
ANSI/ESD S1.1, "Wrist Straps"
ANSI/ESD STM2.1, "Garments"
ANSI/ESD STM3.1 "Ionization"
ANSI/ESD SP3.3, "Periodic Verification of Air Ionizers"
ANSI/ESD STM4.1, "Worksurfaces - Resistance Measurements"
ANSI/ESD S6.1, "Grounding"
ANSI/ESD STM7.1-2013, "Characterization of Materials"
ANSI/ESD STM9.1, "Footwear and Foot Grounders - Resistive Characterization"
ANSI/ESD STM12.1, "Seating - Resistive Measurement"
ANSI/ESD S13.1, "Electrical Soldering/Desoldering Hand Tool Test Methods for Current Leak"
ESD TR53-01, "Compliance Verification of ESD Protective Equipment and Materials"
ANSI/ESD STM97.1, "Floor Materials and Footwear - Resistance Measurement in Combination with a Person"
ANSI/ESD STM97.2, "Floor Materials and Footwear - Voltage Measurement in Combination with a Person"

Additional ESD Documentation

How To Become an ANSI/ESD S20.20 Certified Facility

To meet the global need in the electronics industry for technically sound ESD Control Programs, EOS/ESD Association, Inc. established an independent third-party facility certification program. The program is administered by EOS/ESD Association, Inc. through country accredited ISO9000 certified bodies that have met the requirements of this program. The Facility Certification Program evaluates a facility's ESD program based on the industry standards ANSI/ESD S20.20 or IEC 61340-5-1.

Certification through an accredited third party provides assurance that standards, goods, and services meet essential requirements throughout the global supply chain – engendering consumer trust and fostering competitiveness. Increasingly, procurement authorities, government agencies, and program/scheme owners are requiring certification to demonstrate the technical competence and impartiality of conformance services and processes. These assessments enhance confidence between buyers and sellers as they mitigate risk.

For more information on becoming a certified facility, visit https://www.esda.org/certification/eosesd-association-esd-facility-certification/.