3M™ EMI Copper Foil Shielding Tape 1181 is a 0.066 mm thick tape composed of a 0.036 mm flat copper foil backing coated on one side with a non-corrosive, electrically conductive acrylic pressure-sensitive adhesive, supplied on a removable liner. It is used in the electronics industry for EMI/RFI shielding, static charge draining, seaming shielded rooms, cable wrapping and surface contact to non-solderable materials. It can be die-cut and is solderable; the adhesive requires no moisture, solvents or heat. Silver coated glass beads in the adhesive provide the electrical path between the substrate and the foil.
Typical Properties
- Backing thickness 0.036 mm; total thickness 0.066 ± 0.005 mm
- Adhesion to steel min 2.7 N/cm; breaking strength min 39 N/cm
- Electrical resistance max 0.005 Ω/in² (MIL-STD-202 Method 307)
- Shielding effectiveness (300 kHz–2.5 GHz) average 66 dB (ASTM D4935)
Approvals and Storage
- Flame retardant per UL 510A, UL Component Recognized (Category OARC2, File No. E17385)
- 5 years from manufacture at 10–27 °C and below 75% relative humidity
| Tape Size | 25mm x 33mt or 6mm x 16.5mt or 19mm x 33mt or 25mm x 16.5 mt |