ANSI ESD STM11.11-2022 PDF

Full title and description

ANSI/ESD STM11.11-2022 — ESD Association Standard Test Method for Protection of Electrostatic Discharge Susceptible Items: Surface Resistance Measurement of Planar Materials. This standard specifies a direct‑current test method, required equipment, sample preparation and conditioning, and reporting requirements to obtain reproducible surface resistance measurements for planar materials used in ESD control and packaging.

Abstract

STM11.11-2022 defines a DC surface‑resistance measurement procedure for planar materials (including static‑dissipative, conductive and insulating films, laminates and coated substrates) intended for use in ESD control. The method covers electrode arrangements, instrumentation categories, sample conditioning (temperature and relative humidity), test sequence, calculation/interpretation of results, system verification and reporting. Typical measurement range covered is approximately 1.0 × 10^4 Ω to less than 1.0 × 10^11 Ω (surface resistance), and inter‑laboratory testing shows repeatability on the order of about one‑half order of magnitude for the method as specified.

General information

• Status: Current / Active standard (ANSI approved).
• Publication date: 2022 — (document date listed March 2, 2022; some distributor listings show an August 12, 2022 release).
• Publisher: EOS/ESD Association, Inc. (ESD Association).
• ICS / categories: Electronics / electrostatics testing (ICS: 31.020 — Electronic components in general; related categories include electrical engineering and electrostatics test methods).
• Edition / version: 2022 edition — ANSI/ESD STM11.11-2022.
• Number of pages: 19 pages (typical published PDF/hardcopy length).

Scope

This test method applies to direct‑current surface resistance measurements of planar materials used for ESD protection and packaging. It is intended for materials with surface resistance values roughly between 1.0 × 10^4 Ω and 1.0 × 10^11 Ω. The scope covers required test equipment and fixtures, electrode geometries (concentric ring or other specified assemblies), sample conditioning (temperature, relative humidity and equilibration), measurement procedure, system verification and reporting of results. Product qualification beyond measurement (such as functional performance under process conditions) is outside the scope unless explicitly adopted by a purchaser or program.

Key topics and requirements

• Direct‑current (DC) surface resistance test method for planar materials.
• Specified measurement range (approx. 1.0 × 10^4 Ω to < 1.0 × 10^11 Ω) and notes on method repeatability.
• Required test equipment and instrumentation categories (accuracy, ranges, verification).
• Electrode assemblies and fixture geometry (e.g., concentric ring and alternatives for non‑planar/small samples where applicable).
• Sample preparation, conditioning (temperature and %RH), and equilibration procedures to reduce variability.
• System verification and calibration checks to ensure reproducible results across laboratories.
• Test sequence, polarity/reversal procedures where electrification effects can bias readings, and calculation of surface resistivity/surface resistance.
• Data reporting requirements (method used, instrument, electrodes, environmental conditions, measured values and units, measurement uncertainty or repeatability notes).

Typical use and users

Used by ESD program managers, QA/test laboratories, materials and packaging engineers, product qualification teams and suppliers of ESD materials (worksurface laminates, packaging films, shielding/dissipative bags, foams, coatings). The standard is applied for material selection, acceptance testing, supplier qualification, incoming inspection, R&D characterization and periodic compliance verification within an ESD control program.

Related standards

Commonly used along with other ESD and materials test standards such as ANSI/ESD STM11.12 (volume resistance measurement), ANSI/ESD STM11.13 (two‑point resistance measurement), IEC 61340‑2‑3 (electrostatics — test methods for resistance/resistivity), ANSI/ESD S20.20 (ESD control program requirements) and ASTM D257 (resistivity/resistance test methods) for complementary measurement methods and program-level requirements.

Keywords

surface resistance, surface resistivity, planar materials, ESD, electrostatic discharge, static dissipative, conductive, DC resistance, concentric ring electrode, test method, material characterization, instrumentation, sample conditioning

FAQ

Q: What is this standard?

A: ANSI/ESD STM11.11-2022 is an ESD Association test method that specifies how to measure DC surface resistance of planar materials used in static control and packaging to ensure consistent, reproducible results.

Q: What does it cover?

A: It covers measurement principles, required equipment and electrode fixtures, sample preparation and conditioning (temperature and humidity), test procedure and sequence, system verification, calculations, and reporting of surface resistance/resistivity results for planar materials in an approximate range from 1.0 × 10^4 Ω to < 1.0 × 10^11 Ω.

Q: Who typically uses it?

A: ESD program managers, test labs, materials and packaging engineers, manufacturers and suppliers of ESD materials and components — anyone needing standardized surface resistance data for qualification, compliance or material selection.

Q: Is it current or superseded?

A: The 2022 edition (ANSI/ESD STM11.11-2022) is the current ANSI‑approved edition. Historical versions (for example 2021, 2015, 2006 editions) exist; users should confirm they are using the 2022 edition unless a purchaser or specification calls for an earlier version.

Q: Is it part of a series?

A: Yes — STM11.11 is part of the ESD Association STM11.x group covering electrical characterization of materials (STM11.12 for volume resistance, STM11.13 for two‑point measurements, STM11.31 for shielding materials, etc.) and it is commonly used alongside program standards such as ANSI/ESD S20.20 and international documents like IEC 61340 series.

Q: What are the key keywords?

A: Surface resistance, surface resistivity, ESD, electrostatic discharge, planar materials, static dissipative, conductive, DC measurement, concentric ring electrode, sample conditioning.