A-31 PS Aluminum Foil / Polyester Film EMI-RFI Shielding Tape
A-31 PS is an aluminum foil and polyester film laminate tape engineered for EMI and RFI shielding of electronic components, built to a thickness of 0.0046″ +/- 10% (minus liner) from a 0.001″ aluminum foil, 0.002″ polyester film, and 0.0015″ acrylic pressure-sensitive adhesive. It delivers a peel strength greater than 32 oz./inch of width, a tensile strength of 16,200 psi, and 100% elongation at break. The tape is supplied with a 90 lb. release liner and is manufactured in compliance with FCC Regulations, Docket Number 20780, Volume II, Part 15, Subpart 5.
Key Properties
- Peel Strength: >32 oz./inch of width (ASTM-D-1000)
- Tensile Strength: 16,200 psi (ASTM-D-882)
- Thickness (minus liner): 0.0046″ +/- 10% (PSTC-33)
- Elongation: 100% (ASTM-D-882)
- Release Liner: 90 lb.
- Color: Silver
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Aluminum Foil Thickness | 0.001″ | — |
| Polyester Film Thickness | 0.002″ | — |
| Adhesive Thickness | 0.0015″ | — |
| Release Liner | 90 lb. | — |
| Thickness (minus liner) | 0.0046″ +/- 10% | PSTC-33 |
| Color | Silver | — |
| Shelf Life | 1 year @ 70°F(21°C)/50% R.H. | — |
Mechanical Properties
| Property | Value | Test Method |
| Peel Strength | >32 oz./inch of width | ASTM-D-1000 |
| Tensile Strength | 16,200 psi | ASTM-D-882 |
| Elongation | 100% | ASTM-D-882 |
Compliance
- FCC Regulations, Docket Number 20780, Volume II, Part 15, Subpart 5 — Compliant
- EMI/RFI shielding for electronic enclosures
- Cable and connector shielding
- Grounding and static drain applications
- Shielding for PCB and component assemblies
- Electronics equipment shielding in aerospace and industrial systems
Common industries: Electronics manufacturing, aerospace, industrial equipment, telecommunications.
A-31 PS is a pressure-sensitive laminate constructed from a 0.001″ aluminum foil, a 0.002″ polyester film carrier, and a 0.0015″ acrylic adhesive system, built to a thickness of 0.0046″ +/- 10% minus liner. The construction is designed for EMI and RFI shielding of electronic enclosures, cables, connectors, and PCB assemblies, with a peel strength greater than 32 oz./inch of width and a 16,200 psi tensile strength supporting durable, long-lasting application.
The tape’s 100% elongation at break allows it to conform readily to irregular or contoured surfaces during installation and converting. It is finished in silver, supplied with a 90 lb. release liner for clean unwind and precision die-cutting, and carries a one-year shelf life when stored at 70°F (21°C) and 50% relative humidity. Compliant with FCC Regulations, Docket Number 20780, Volume II, Part 15, Subpart 5.
What differentiates A-31 PS from other tape grades in the line?
A-31 PS is defined by its high tensile strength (16,200 psi) and 100% elongation at break — the highest elongation among the non-electrically-rated A-Series grades — within a 0.0046" (minus liner) construction. Unlike A-25 90-68 or A-35 PS, its TDS does not list signal attenuation or dielectric strength values, so it is differentiated primarily by mechanical conformability and its FCC compliance under Docket Number 20780, Volume II, Part 15, Subpart 5.
Why is peel adhesion important for A-31 PS?
Peel adhesion determines how securely A-31 PS remains bonded to the enclosure, cable, or component surface once installed. A peel strength greater than 32 oz./inch of width helps the tape resist edge lift and adhesive failure through handling and continued service, preserving the integrity of the shielding path.
What is the storage range for A-31 PS?
The TDS specifies a shelf life of 1 year when stored at 70°F (21°C) and 50% relative humidity; no separate operating temperature range is stated on the manufacturer's TDS.
Is A-31 PS suitable for FCC-regulated EMI/RFI shielding environments?
Yes. A-31 PS is manufactured in compliance with FCC Regulations, Docket Number 20780, Volume II, Part 15, Subpart 5, as stated on the manufacturer's TDS.
How should A-31 PS be specified?
Specify grade (A-31 PS), thickness, color, adhesive type, liner type, compliance requirements, dimensional tolerances, and finished format.
