1181 Tape

Copper Foil with Conductive Adhesive

Data Sheet

Product Description

3M

™ 1181 Tape consists of a 1-ounce deadsoft

copper foil backing and a unique electrically

conductive pressure-sensitive acrylic adhesive.

•Deadsoft 1-ounce copper foil backing

•Conductive acrylic adhesive

•Supplied on a removable liner for easy handling and

diecutting

Like all 3M shielding tapes, 3M 1181 is available in

standard and custom widths and lengths. Standard

length is 18 yards.

•Widths from 1/4” to 23”

•Longer lengths up to several times normal length,

dependent upon width. Check with Customer

Service.

Applications

3M 1181Tape is typically used for applications

requiring excellent electrical conductivity from the

application substrate through the adhesive to the foil

backing. Common uses include grounding and EMI

shielding in equipment, components, shielded rooms,

etc. The copper foil backing is solderable and resists

oxidation and discoloration.

Shielding Effectiveness

Many factors determine the true shielding

effectiveness of a shielding tape, including type and

thickness of foil, adhesive type, intimacy of contact,

smoothness of application surface, strength and

frequency of the EMI signal, etc. However, using

standard tests and fixtures, it is possible to determine

a value for the attenuation.

For 3M 1181 Tape, typical shielding effectiveness

(far field) is in the range of 60dB to 80dB (30 MHz

to 1 GHz).

Properties

Typical Values

Backing thickness

1

1.4 mil (0,04mm)

Total thickness (backing plus adhesive)

2

2.6 mil (.066mm)

Breaking strength

1

25 lb./in (44 N/10mm)

Adhesion to steel

1

35 oz/in (3,8 N/10mm)

Electrical resistance through adhesive

2

0.005 ohm

Flame retardancy

3

Pass

* Footnote: 1. Test method ASTM D 1000

2. MIL-STD-202 Method 3 07 maintained at 5 psi (3,4 N/cm

provide the electrical path between the application substrate and the foil backing.

3. UL-recognized for flame retardancy per UL 510, Product Category 0ANZ2, File E17385.