3M 1181
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Conductive Adhesive Path
- 66 dB Average Shielding
- Solderable Die-Cut Construction
Product Description
3M EMI Copper Foil Shielding Tape 1181 is a 0.066 mm copper foil tape with an electrically conductive acrylic pressure-sensitive adhesive and removable liner for EMI/RFI shielding and static charge control. Silver-coated glass beads in the adhesive create an electrical path between the copper backing and the application surface. The tape averages 66 dB shielding effectiveness from 300 kHz to 2.5 GHz under ASTM D4935 testing and has maximum electrical resistance of 0.005 ohm/in2 under the stated MIL-STD-202 test. It can be die-cut and soldered for shielded-room seams, cable wrapping, electrical contact to non-solderable surfaces, and prototype electronics work.
Key features
- Conductive adhesive path: Silver-coated glass beads provide electrical continuity between the flat copper foil and application surface.
- Measured shielding performance: Average shielding effectiveness is 66 dB from 300 kHz to 2.5 GHz under ASTM D4935.
- Fabrication versatility: The lined copper tape can be die-cut and soldered for production or prototype configurations.
Applications
Applications include EMI/RFI shielding, static charge draining, seaming shielded rooms, cable wrapping, contact to non-solderable surfaces, die-cut components, prototyping, and troubleshooting.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Copper | - | Visual |
| Backing | Flat copper foil | - | As supplied |
| Adhesive | Electrically conductive acrylic | - | Pressure-sensitive adhesive |
| Backing thickness | 1.4 / 0.036 | mil / mm | Nominal |
| Total thickness | 2.6 +/- 0.2 / 0.066 +/- 0.005 | mil / mm | ASTM D1000 at 23 deg C |
| Shelf life | 5 | years | From manufacture; 10 to 27 deg C and less than 75% RH |
Final-state / after-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Electrical resistance | 0.005 | ohm/in2 | Maximum; MIL-STD-202 Method 307 at 5 psi over 1 in2 |
| Shielding effectiveness | 66 | dB | Average; ASTM D4935, 300 kHz to 2.5 GHz at 23 deg C |
| Adhesion to steel | 25 / 2.7 | oz/in / N/cm | Minimum; ASTM D1000 at 23 deg C |
| Breaking strength | 22 / 39 | lb/in / N/cm | Minimum; ASTM D1000 at 23 deg C |
| Flame retardancy | Pass | - | UL 510A, Category OARC2, File E17385 |
