ESD - EMI Barrier Bags
MIL-PRF-81705E ESD/EMI Barrier Bags: Static & EMI Protection for Sensitive Electronics
MIL-PRF-81705E ESD/EMI barrier bags are critical components in military, aerospace, and electronics packaging. Designed to meet strict U.S. Department of Defense specifications, these bags protect electronic components from electrostatic discharge (ESD) and electromagnetic interference (EMI), ensuring the safe transport and storage of mission-critical equipment.
Available in Type I, Class 1 and Class 2, these barrier bags provide a high level of shielding and environmental protection.
What Is MIL-PRF-81705E?
MIL-PRF-81705E is a military performance specification that defines the requirements for flexible barrier materialsused in electrostatic and electromagnetic shielding packaging. This spec is used extensively in military and aerospace supply chains, as well as in commercial electronics manufacturing.
Key Material Types:
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Type I: Laminated, flexible film offering both ESD and EMI shielding.
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Class 1: Designed for heat-sealable moisture barrier packaging with static dissipative properties.
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Class 2: Offers the same ESD and EMI protection as Class 1 but with added durability and puncture resistance.
Features and Benefits
MIL-PRF-81705E bags are manufactured using multi-layer film constructions, including layers of polyester, aluminum foil, and static dissipative polyethylene. These layers work together to block static charges, RF/EMI waves, and moisture from damaging sensitive electronics.
Key Features:
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✅ Excellent electrostatic shielding (static dissipative inner and outer layers)
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✅ Superior EMI/RFI shielding via aluminum foil layer
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✅ Moisture and vapor resistance
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✅ Heat-sealable and vacuum-compatible
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✅ Low surface resistivity (10⁵–10¹² ohms)
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✅ Meets or exceeds DoD ESD packaging requirements
Common Uses of MIL-PRF-81705E Barrier Bags
1. Protection of Circuit Boards and Microchips
These bags are ideal for packaging static-sensitive components like PCBs, semiconductors, resistors, and processors during storage and transit.
2. Aerospace and Defense Electronics
From avionics systems to navigation modules, MIL-PRF-81705E bags ensure secure handling and long-term preservation of critical components.
3. ESD Safe Work Environments
They are commonly used in ESD-safe cleanrooms and assembly lines for storing or transferring devices during production or repair.
4. Export and Military Shipping
Used extensively in military packaging (MIL-STD-129, MIL-STD-2073), these bags meet government specifications for worldwide shipping and depot storage.
Class 1 vs. Class 2: What’s the Difference?
Feature | Class 1 | Class 2 |
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Use Case | Standard electronics packaging | Heavy-duty, rugged packaging |
Tear Resistance | Moderate | Higher |
Surface Resistivity | 10⁵ – 10¹² ohms | 10⁵ – 10¹² ohms |
Vapor Barrier | Yes | Yes |
Heat Sealable | Yes | Yes |
Class 2 bags are often chosen for applications where the packaging may encounter rough handling or more extreme environments.
How to Use MIL-PRF-81705E ESD/EMI Barrier Bags
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Insert the component into the bag in an ESD-safe environment.
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Add desiccants or humidity indicators if long-term storage or moisture control is required.
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Vacuum seal or heat seal the bag using standard equipment.
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Label and mark according to military or industry requirements.
Note: Always handle components and bags using proper ESD grounding procedures.
Compliance & Certification
To ensure performance and compliance with defense contracts, these bags must be certified to MIL-PRF-81705E and may be required for projects following:
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MIL-STD-129 (Marking)
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MIL-STD-2073 (Packaging Requirements)
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ANSI/ESD S20.20 ESD Control Program
Buy ESD/EMI Barrier Bags per MIL-PRF-81705E
At Arms Preservation Inc., we offer a full selection of military-spec ESD/EMI barrier bags in both Type I, Class 1 and Class 2. Custom sizes, bulk orders, and printed options are available for both military and commercial applications.
Contact us today to request a quote or talk with a packaging specialist about your compliance and protection needs.