MIL-PRF-81705 – Royco Packaging

MIL-PRF-81705 is a military performance specification for flexible barrier materials used to protect electrostatic-discharge-sensitive electronics. It is intended for items such as microcircuits, semiconductors, resistors, circuit assemblies, and other components that can be damaged by static electricity during handling, storage, or shipment. Royco Packaging stocks MIL-PRF-81705F materials in rolls, pouches, bags, and tubing and can custom-convert them to unusual dimensions. The company offers Type I and Type III options, allowing the protection level to be matched to the application. These materials are commonly used in defense, aerospace, electronics, and other high-reliability supply chains where ESD control and documentation are critical.

MIL-PRF-81705 Type I and Type III both provide ESD protection, but Royco describes Type I as the more robust construction because it adds electromagnetic-interference protection in addition to ESD shielding. Type III provides ESD protection without the additional EMI layer and is appropriate when EMI is not a significant risk for the packaged component. The correct type should come from the contract, engineering requirement, or packaging procedure rather than being selected solely by cost. Royco Packaging stocks both types and can help customers choose the material that meets the required electrical protection without over-specifying the package. Custom dimensions are also available for non-standard boards and assemblies.

MIL-PRF-81705 products are designed for ESD protection, and some constructions also provide strong moisture-barrier performance. Royco’s Type I product line includes an ESD moisture-barrier film and SpecPack™ 1F1 watervaporproof ESD barrier bags, while Type III focuses on ESD shielding without the added EMI layer. The exact combination of electrostatic, EMI, and moisture protection therefore depends on the material selected rather than the specification name alone. For moisture-sensitive electronics, Royco can pair the appropriate ESD barrier with desiccant and a humidity indicator. Customers should provide the contract callout and environmental risk so Royco can recommend the correct construction.

MIL-PRF-81705 materials are typically used for static-sensitive electronics such as microcircuits, semiconductors, resistors, printed circuit boards, avionics modules, sensors, control electronics, and other assemblies that can be damaged by electrostatic discharge. Royco Packaging serves military, aerospace, automotive, industrial, and medical/laboratory supply chains where the value and sensitivity of electronic components justify controlled ESD packaging. Type I materials may be selected when EMI protection is also required, while Type III can be used where ESD shielding is the primary need. Royco supplies roll stock and converted bags and can custom-size materials for boards, modules, and assemblies with unusual geometries.

Yes. Royco Packaging can convert MIL-PRF-81705 materials to custom dimensions when standard bags or roll widths do not fit the electronics being protected. Custom sizing is useful for circuit boards, avionics modules, sensors, assemblies, and other products that have non-standard footprints or need tighter control over excess package volume. Royco can supply rolls, pouches, bags, and tubing and can help choose between Type I and Type III based on the ESD and EMI requirements. Customers should provide the component dimensions, specification callout, quantity, and any moisture-control or documentation needs. The team can then recommend an appropriate barrier construction and converted format.