3M 1183 Tape is a 1-ounce deadsoft tin-plated copper foil backing with a unique electrically conductive pressure-sensitive acrylic adhesive. This product offers excellent electrical conductivity and is commonly used in grounding and EMI shielding applications in equipment, components, shielded rooms, etc.
3M 1183 Tape consists of a 1‑ounce dead‑soft tin‑plated copper foil backing with a pressure‑sensitive conductive acrylic adhesive. It is supplied on a removable liner and is available in standard and custom widths and lengths, making it suitable for grounding, EMI shielding, and solderable applications.
The sheet provides typical values such as backing thickness, total thickness, breaking strength, adhesion to steel, electrical resistance through the adhesive, and flame‑retardancy. Shielding effectiveness is reported in the range of 70 dB to 85 dB (30 MHz to 1 GHz).
| Backing thickness | 1.4 mil (0.04 mm) |
|---|---|
| Total thickness (backing plus adhesive) | 2.6 mil (0.066 mm) |
| Breaking strength | 25 lb/in (44 N/10 mm) |
| Adhesion to steel | 35 oz/in (3.8 N/10 mm) |
| Electrical resistance through adhesive | 0.005 Ω |
| Flame retardancy | Pass |
| Shielding effectiveness (far field) | 70 dB to 85 dB (30 MHz to 1 GHz) |
The typical shielding effectiveness (far field) is 70 dB to 85 dB over the frequency range 30 MHz to 1 GHz.
The electrical resistance through the adhesive is 0.005 Ω.
The backing thickness is 1.4 mil (0.04 mm) and the total thickness (backing plus adhesive) is 2.6 mil (0.066 mm).
Yes, it passes the flame‑retardancy test.