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Roll of copper foil tape, single-sided adhesive, copper finish

3M

3M 1181 Copper Foil Tape 18 ft 600 V 66 dB

SKU CH-B7VS-144QA

Copper foil tape provides 66 dB shielding and 600 V rating across a temperature range of -40 to 266 °F

  • ColorCopper
  • Effective EMI shielding at 66 dB across broad frequencies
  • Conductive copper foil ensures reliable electrical continuity
  • Acrylic adhesive bonds securely from -40 °F to 266 °F
  • 600 V rating supports high-voltage insulation needs
  • Thin 2.6 mil profile fits tight spaces easily

Product Identity

3M 1181 is a copper foil shielding tape supplied as a continuous roll measuring eighteen feet in length. It is intended for technicians and engineers who require conductive electrical tape for grounding, EMI shielding or static discharge applications in automotive and industrial environments.

Deciding Specification

The tape delivers a shielding effectiveness of 66 dB and carries a voltage rating of 600 V, making it suitable for circuits operating within those limits. Its acrylic adhesive functions reliably from minus 40 degrees F up to 266 degrees F, so the part is only appropriate where the service temperature stays inside that window.

Installation Notes

The single-sided adhesive allows straightforward hand application onto clean, dry surfaces without special tools. The foil is 2.6 mil thick, so it conforms to irregular shapes but can tear if pulled sharply around tight corners; pressing firmly with a roller improves contact and reduces the risk of lifted edges.

Highlights

  • Effective EMI shielding at 66 dB across broad frequencies
  • Conductive copper foil ensures reliable electrical continuity
  • Acrylic adhesive bonds securely from -40 °F to 266 °F
  • 600 V rating supports high-voltage insulation needs
  • Thin 2.6 mil profile fits tight spaces easily

Specifications

Brand3M
ColorCopper

Questions about this item

What does 66 dB shielding effectiveness mean when the tape is applied in a real installation?

The 66 dB rating shows how much electromagnetic interference the copper foil blocks when wrapped around cables or enclosures.

How does the 600 V voltage rating limit what circuits this tape can be used on?

The 600 V rating means the acrylic adhesive and foil remain electrically stable up to that potential, so it suits low-voltage and mains-rated wiring within that limit.

What surface preparation and clearance does the 2.6 mil foil need to adhere and conform properly?

Clean the surface so the acrylic adhesive bonds, then press the thin 2.6 mil copper foil into place; it conforms to irregular shapes without needing extra mounting hardware.

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