CLAUSE CODE: QC35c    This clause was archived as of 08/18/2016
  CLAUSE TITLE: Electrostatic Discharge (ESD) Control Program

QC35c - Electrostatic Discharge (ESD) Control Program:

General Requirement

For all ESD sensitive Electrical, Electronic, and Electromechanical (EEE) devices, the Subcontractor shall properly handle, package, and identify in accordance with the latest revision of ANSI/ESD S20.20.

High Sensitivity Requirements

If the device has an ESD sensitivity of 200 volts or less, the Subcontractor shall comply with the following additional requirements:

  • These items/actions are forbidden:
    • Pink poly static dissipative materials
    • Cloth wrist straps
    • Aluminized duct tape
    • Anti-static sprays
    • Using auxiliary ground resistance of more than 10 Ohms
    • Using garments to achieve grounding
    • Having electric field in ESD Protected Area of more than 200 volts/inch
  • These actions are mandatory:
    • Daily verifying of electrical tools’ resistance in according with Annex A of ANSI/ESD S20.20
    • Discharging of cables prior to mating
    • Wearing ESD safe garments
    • Handling requirements from Table 1

ESD-safe Work Area Classification

HBM ESD Sensitivity Levels

Continuous Monitors

Grounded Floor and ESD Footwear

Air Ionization

Minimum humidity

Ionizers Discharge Time

Highly Sensitive

<200V to ≥50V



Alternative to wrist strap



± 1000 to <± 50 V in < 20 seconds

Extremely Sensitive

<50V to ≥20V





± 1000 to <± 20 V in < 15 seconds







± 1000 to <± 5

V in < 10 seconds

Table 1: HBM ESD Sensitivity Levels and Requirements for Continuous Monitors, Footwear, Humidity, and Performance of Air Ionizer

  • ESD sensitivity is defined using the Human Body Model (HBM) of MIL-STD-883, Method 3015.
  • ANSI/ESD S20.20 is for the “Development of an Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment (excluding electrically initiated Explosive Devices)”.