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Permacel/Nitto Denko America
P391

1 Oz. Copper Foil Conductive Adhesive Tape

P391 is a 3.5 mil, 1 oz., copper foil, conductive adhesive tape. It is engineered specifically for EMI/RFI shielding. P391 combines outstanding adhesion, interlining to permit ease of die-cutting, and a high EMI/RFI shielding effectiveness. It also provides a high level of conductivity.

Product Properties Related Information Custom Quote

Converting Services

At Budnick, we specialize in custom converting these materials into labor saving, user-friendly parts.

Backing/Carrier Copper
Adhesive Acrylic
Thickness 3.5 Mils
Tensile 35.00 lbs/in
Elongation 6.00%
Adhesive Activation Pressure
Adhesion (unwind) 40 oz/in
Min. Application Temp 40° F
Min. Service Temp 0° F
Max Short-Term Temp
Max Long-Term Temp

Product Features

  • Coated paper protective interliner makes for easy die-cutting
  • Provides performance plus economy
  • Quick & easy to apply
  • Electrical resistant
  • Backing is soft annealed for superior conformability & excellent solderability

Adhesive Tape Applications

  • For use as electromagnetic and/or radio frequency shielding on pulse transformer coils & on small reactor coils
  • Fabricating RFI shield sub-assemblies completed with soldered ground lead wire for all types of coils
  • Supplemental shield at seams, joints & access doors & covers of electrical/electronic cabinetry & enclosures

Adhesive Tape Colors

  • Copper

Data provided by Budnick Converting, Inc.

The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.

It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.

Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.

Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.