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:

Type I: Laminated, flexible film offering both ESD and EMI shielding.
Class 1: Designed for heat-sealable moisture barrier packaging with static dissipative properties.
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:

✅ Excellent electrostatic shielding (static dissipative inner and outer layers)
✅ Superior EMI/RFI shielding via aluminum foil layer
✅ Moisture and vapor resistance
✅ Heat-sealable and vacuum-compatible
✅ Low surface resistivity (10⁵–10¹² ohms)
✅ 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
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

Insert the component into the bag in an ESD-safe environment.
Add desiccants or humidity indicators if long-term storage or moisture control is required.
Vacuum seal or heat seal the bag using standard equipment.
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:

MIL-STD-129 (Marking)
MIL-STD-2073 (Packaging Requirements)
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.