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How can I identify if an item is electrostatic discharge (ESD) susceptible?

Drawings, specifications, technical sheets, and packaging/marking requirements usually identify items which are ESD susceptible.  
DODM 4100.39, Volume 10 tables establish codes to identify items that are ESD susceptible.

Table 82 - WATER TYPE CARGO CODE (TCC)

  •  Items having TCC of “3” in block “8” of the DD Form 1348–1A or as identified on WebFLIS (DOD access only)

Table 189 - ELECTROSTATIC DISCHARGE CODE (ESDC)

  • A-No known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity.
  • B- Represents items with ESD sensitivity.
  • C- Represents items with EMI sensitivity.
  • D- Represents items with both ESD and EMI sensitivity.


Table 193 - FSCs REQUIRING ELECTROSTATIC DISCHARGE CODES

  • 5905 (resistors)
  • 5961 (semiconductor devices)
  • 5962 (microcircuits electronic)
  • 5963 (electronic modules)
  • 5998 (circuit board/card assemblies)
  • 5999 (Miscellaneous Electrical and Electronic Components)


Items identified as being susceptible to ESD/Electromagnetic Interference (EMI) may have a military method of preservation code of MOP “GX.” Special packaging materials are used to protect the item from electrostatic or electro-magnetic interference depending on the sensitivity of the item.

When MOP=DW is required, the Special Mat'l content of ESD/EM it is required to be handled at an ESDS protected workstation. Additionally, the application of an ESD susceptible items label(s) IAW MIL-STD-129 is required. While this is not the typical MOP=GX, it does require special handling
.
Most ESDS items will have a Special Marking Code of “39”. This code indicates that ESD susceptible electronic device requirements of MIL–STD–129 apply.

The US Army Missile Command has identified FSC 5955 (Oscillators and Piezoelectric Crystals), 5963 (Electronic Modules), and 7042 (Mini and Microcomputer Control Devices) as ESD items.

MIL-PRF-19500 and Qualification Part Search (dla.mil) respectively documents ESD Classes and identifies part numbers as ESD or non-susceptible.
 
Note: The ESD/EMI, TCC, and method of preservation (MOP) codes should all be in agreement (e.g. ESD/EMI-B; TCC-3; and MOP-GX). If these data sets are not in agreement, please contact the managing activity on the web FLIS Total Item Record (SOS) and request an ESD Challenge. The managing activity will conduct technical research to verify the coded data to ensure it aligns with the manufacturer or specification data.

Category: Electrostatic Discharge (ESD)