See published article Now Is The Time for ESD Control Programs to be Improved It includes:
HUMAN BODY MODEL
- Part of the challenge may be for the first time needing to handle electronics having a HBM Class 0A withstand voltage. Per the ANSI/ESD S20.20 Foreword: “This standard covers electrical or electronic parts, assemblies and equipment susceptible to damage by electrostatic discharges greater than or equal to 100 volts Human Body Model (HBM).
- When handling devices susceptible to less than 100 volts HBM, more stringent ESD Control Program Technical Requirements may be required, including adjustment of program Technical Element Recommended Ranges.
ANSI/ESDA/JEDEC JS-001-2011 Table 3. HBM ESD Component Classification Levels
Classification Voltage Range (V)
- 0A < 125
- 0B 125 to < 250
- 1A 250 to < 500
- 1B 500 to < 1000
- 1C 1000 to < 2000
- 2 2000 to < 4000
- 3A 4000 to < 8000
- 3B ≥ 8000
JESD22-C101C Field-Induced Charged-Device Model Test Method for Electrostatic-Discharge-Withstand Thresholds of Microelectronic Components Table 3
Devices shall be classified as follows:
- CLASS I < 200 volts
- CLASS II 200 to < 500 volts
- CLASS III 500 to 1000 volts
- CLASS IV > 1000 volts
The article lists possible steps one can take to improve their ESD control program; it is an update of what we have online at Class Zero and ESD Control.
There are companies that do ESD simulation and can destructively test a component, sub-assembly, or product to determine the ESD sensitivity or “withstand voltage.” For example, ETS or Electro-Tech Systems at www.electrotechsystems.com/ in Glenside, Pennsylvania should be able to perform withstand voltage testing. However, we understand taht most of our customers rely upon classification or withstand voltage documentation from component suppliers and then have a program to protect the very most ESD sensitive item.