3M™ 1181 Conductive Copper Tape

50.8mm × 16.5m • EMI Shielding & Electrical Grounding

Product Features

• Pure Copper Foil Backing: Highly conductive (>98% copper) for effective EMI/RFI shielding and grounding.

• Pressure-Sensitive Conductive Adhesive: Carbon-filled acrylic adhesive ensures continuous conductivity on both sides.

• Excellent Flexibility: Conforms to curves and irregular surfaces without cracking.

• High Tensile Strength: Reinforced for durability in mechanical and thermal applications.

• Easy Cutting & Handling: Clean, smooth edges for precision in electronics work.

• Solderable Surface: Allows for direct soldering to enhance electrical connections.

Technical Specifications

• Dimensions: 50.8mm (2") × 16.5m (54.1 ft).

• Thickness:

• Copper foil: ~0.06mm (2.4 mil).

• Adhesive: ~0.03mm (1.2 mil).

• Total thickness: ~0.09mm (3.6 mil).

• Conductivity:

• Surface resistivity: <0.02 Ω/sq (backing).

• Volume resistivity: <0.005 Ω·cm.

• Peel Strength: ~10 N/25mm (tested on stainless steel).

• Temperature Range: -40°C to +90°C (-40°F to +194°F).

• Dielectric Strength (adhesive): ~1 kV/mm.

Typical Applications

• EMI/RFI Shielding: Protecting sensitive electronics from interference (e.g., PCBs, enclosures).

• Grounding & Static Dissipation: Safely discharging static in aerospace, medical, or industrial equipment.

• Circuit Repair: Bridging broken traces or providing jump connections on PCBs.

• RF/ID Shielding: Blocking signals in RFID tags, NFC, or antenna designs.

• Art & DIY: Stained glass assembly, decorative conductive elements, and prototyping.

Compliance & Standards

• Flame-retardant (meets UL 510).

• RoHS and REACH compliant.