1170 (7.7"X10" SHEET) - 3M

Awide variety of tapes

for EMI shielding and

grounding

• Copper, aluminum, and tin-plated

copper foil backings

• Conformable copper-plated

fabric backing

• Smooth and embossed foil surfaces

• Conductive and nonconductive acrylic

adhesives

• Liners on all tapes for diecutting and

handling ease

Long-term proven

durability and reliability

3M has been providing adhesive-backed

foil tapes for EMI (electromagnetic

interference) shielding and grounding

applications for over forty years. Test

results and actual in-use experience have

proven the stability and effectiveness of

the backings and adhesives over long

periods of time.

3M was the first to introduce

shielding tape with conductive adhesive,

first with embossed foil backing for

"through the adhesive" conductivity, and

first with tin-plated copper backing for

improved shielding, solderability, and

corrosion resistance.

Excellent shielding

effectiveness

Consistent manufacturing processes

ensure that all of the 3M™EMI

Shielding Tapes exhibit the low contact

resistance necessary to achieve the level

of shielding effectiveness shown on the

graph below.

Customer Service

In addition to the high standard of quality

that goes into each roll of shielding tape,

3M customers receive other important

value-added benefits. Customer Service,

Technical Service, and Manufacturing

resources are dedicated to maintaining

the highest level of service, quality, and

delivery. 3M also offers the unique

advantage of global product support and

availability through a worldwide network

of subsidiaries and distributors.

In addition to handling your order

entry needs, our Customer Service

Department can put you in contact with

your local 3M sales representative,

identify the distributor offices in your

area, or connect you with our Technical

Service personnel.

3M sales representatives are always

ready to assist your engineering, product

development, and purchasing personnel

with answers to technical questions and

guidance in the selection of the ideal

shielding tape for each application.

Our sales force is supported by an

extensive nationwide network of

distributors who can provide prompt

and efficient service and delivery

in response to all of your shielding

tape requirements. Many of our

distributors also offer diecutting and

fabricating services.

Your “How To” Resource

The advantage you get with 3M shielding

tapes is not only superior product, but

also a reliable source of technical

solutions. Whether you need assistance to

select a shielding tape to meet a specific

production requirement or to increase

productivity or product performance, our

technical expertise is always available.

For any inquiries or requests

regarding 3M EMI Shielding Tapes,

please contact Customer Service by

phone at 800-328-1368 or by FAX at

800-828-9329.(From the

Maquiladoras, call 512 -984-2666.)

EMI Shielding Tapes

0 100 200 300 400 500 600 700 800 900 1000

100

Frequency (MHz)

Attenuation (dB)

13 45

1245

11 83

1181

1267

1170

1182

1194

13 45

1245

11 83

1181

1194

1170

1182

1267

Shielding Effectiveness (Far Field) - Typical Values (ASTM-D-4935)

Engineering Kit for EMI

Shielding Tapes

3M EMI Shielding Tapes have a

multitude of uses in electronic design

and test laboratories.

The 3M Engineering Kit offers

ready access to the full line of 3M

shielding tapes. Priced to enable

companies to provide a kit for each of

their engineers, the kit makes specifying,

prototyping, troubleshooting, testing and

repairing faster and easier. The compact

dispenser box (4 in. x 4 in. x 8.3 in.)

serves as a desktop reference for the

tapes. The box panels provide basic

technical information about each tape,

including product number, backing and

adhesive type and thickness, adhesion,

resistance, and shielding effectiveness.

The kit is available through 3M

Electrical Markets Division foil tape

distributors, or it can be ordered in any

quantity directly from 3M by calling

Customer Service (see page 1).

Tape Construction

Smooth foil backings with

conductive adhesive

3M™ EMI Shielding Tapes 1170

(aluminum), 1181 (copper) and 1183

(tin-plated copper) are smooth-backed

foil tapes that establish secure electrical

contact with the application surface by

means of a unique adhesive. Well

distributed conductive particles

in the adhesive provide a multitude

of low-resistance paths between the

backing and the substrate. (Figure 1)

Embossed foil backings

The backings of Shielding Tapes 1245

(copper), 1267 (aluminum) and 1345

(tin-plated copper) are impressed with

an embossed pattern (Figure 2) that

protrudes through the acrylic adhesive

to make direct electrical contact with

the application surface. This reliable

“through-the-adhesive” conductivity

system provides stable contact resistance

and a high level of

shielding effectiveness.

Tin-plated foil backings

The copper used in 3M EMI Shielding

Tapes 1183 (smooth backing) and 1345

(embossed backing) is plated on both

sides with tin to provide exceptional

solderability and resistance to corrosion

and oxidation. In addition, the tapes

remain conductive after oxidation.

Conductive adhesive on

both sides

3M Shielding Tape 1182 is a copper foil

tape coated on both sides with conductive

acrylic adhesive. This unique

construction offers an excellent method

of grounding and bonding conductive

surfaces. It also exhibits low thermal

resistance. Tape 1182 is supplied with

a removable liner on each side for ease

of handling.

Smooth foil backing with

nonconductive adhesive

3M Shielding Tape 1194 is a smooth-

backed copper tape that features the same

high quality solvent-resistant, acrylic

adhesive as other 3M foil tapes. Good

solderability makes it an economical

choice for applications like connector

and cable shielding, grounding,

electrostatic shielding between

transformer windings, outer wrap for

coils, and attachment of connector tabs

on rolled film-and-foil capacitors.

Adhesive

Both the conductive and nonconductive

versions use the same acid-free,

corrosion-resistant acrylic resin.

Smooth Backing with

Conductive Adhesive

Foil backing

cross section

High-strength

noncorrosive acrylic

adhesive

Unique

conductive

particles

Metal substrate

cross section

Embossed Backing with 

“Through-the-Adhesive” Contact

Foil backing

cross section

High-strength

noncorrosive acrylic

adhesive

Metal-to-metal

contact

Metal substrate

cross section

Figure 1:

Figure 2:

Ask your 3M Sales Representative

about 3M Electromagnetic

Compatible Products.

Product Roll Backing Total Breaking Adhesion Flame Electrical

Tape Description Length3Thickness Thickness Strength4to Steel4Retardant5Resistance6

1170 Aluminum 18 yds 2.0 mil 3.2 mil 20 lb/in 35 oz/in 0.010 ohm

foil, (0,05mm) (0,08mm) (35 N/10mm) (3,8 N/10mm)

conductive

adhesive1

1181 Copper 18 yds 1.4 mil 2.6 mil 25 lb/in 35 oz/in 0.005 ohm

foil, (0,04mm) (0,07mm) (44 N/10mm) (3,8 N/10mm)

conductive

adhesive1

1182 Copper 18 yds 1.4 mil 3.5 mil 25 lb/in 35 oz/in 0.010 ohm

foil, (0,04mm) (0,09mm) (44 N/10mm) (3,8 N/10mm)

conductive

adhesive1 on

both sides

1183 Tin-plated 18 yds 1.4 mil 2.6 mil 25 lb/in 35 oz/in 0.005 ohm

copper foil, (0,04mm) (0,07mm) (44 N/10mm) (3,8 N/10mm)

conductive

adhesive1

1Conductive particles in the adhesive provide the electrically conductive path between the substrate and the backing. (Figure 1, page 2)

2The embossed pattern provides the electrically conductive path through the adhesive.(Figure 2, page 2)

3Multiple-length rolls and custom slit widths up to 23” (58.4cm) are available by special order.

Test methods:

4ASTM D 1000

5All 3M foil shielding tapes are UL Recognized ( )for flame retardancy per UL 510, Product Category OANZ 2, File E17385.

6Resistance measured through the adhesive. MIL-STD-202 Method 307 maintained at 5 PSI (3,4 N/sq cm) measured over 1 sq in. surface area.

1245 Embossed 18 yds 1.4 mil 4.0 mil 25 lb/in 35 oz/in 0.001 ohm

copper foil, (0,04mm) (0,10mm) (44 N/10mm) (3,8 N/10mm)

conductive-

through-

adhesive2

1267 Embossed 18 yds 2.0 mil 5.0 mil 20 lb/in 35 oz/in 0.005 ohm

aluminum foil, (0,05mm) (0,13mm) (35 N/10mm) (3,8 N/10mm)

conductive-

through-

adhesive2

1345 Embossed 18 yds 1.4 mil 4.0 mil 25 lb/in 35 oz/in 0.001 ohm

tin-plated (0,04mm) (0,10mm) (44 N/10mm) (3,8 N/10mm)

copper foil,

conductive-

through-

adhesive2

1194 Copper foil, 36 yds 1.4 mil 3.0 mil 25 lb/in 40 oz/in N/A

nonconductive (0,04mm) (0,08mm) (44 N/10mm) (4,4 N/10mm)

adhesive

Smooth Backing, Nonconductive Adhesive

Embossed Backing, Conductive-through-Adhesive

Smooth Backing, Conductive Adhesive

Technical Information

Note: Values shown are typical and are not recommended for specification purposes. Product specifications will be provided upon request.

Typical Shielding Tape Applications

Electrical Markets Division

6801 River Place Blvd.

Austin, TX 78726-9000

800-676-8381

Fax 800-828-9329

www.3M.com/electrical/oem

40% Pre-consumer waste paper

10% Post-consumer waste paper

Litho in the USA

3M™EMI Shielding Tapes are well suited

for applications requiring reliable point-to-

point electrical contact, particularly

EMI shielding, grounding and static

charge draining.

Economical EMI shielding

Shielding tapes are able to contain signals

emitted from your components, thus

preventing interference with other circuits.

They can also be used to seal out random

signals in the environment to protect

sensitive equipment. Typical applications

include shielding around electronic cabinet

doors and panels, individual electronic

components and cables. The ease of

installation offered by the pressure-

sensitive adhesive saves labor and provides

cost-effective, long-term shielding.

EMI troubleshooting

and prototyping

3M shielding tapes also simplify the trial-

and-error aspect of EMI troubleshooting.

When a source of EMI leakage is located,

shielding tape easily and effectively solves

the problem.

The tapes have a multitude of uses in

electronic design and in test and QC

laboratories for prototyping and

troubleshooting. An excellent tool for such

applications is the 3M Engineering Kit

for EMI Shielding Tapes (Page 2).

Static charge drainage

These tapes also offer an easy way to

eliminate potentially dangerous static

build-up on solid state devices, CRTs

and computer peripherals. The secure

bond and excellent “through-the-

adhesive” conductivity provide

dependable grounding.

Fast and easy application

For best results, the application surface

must be clean and dry. To maximize

electrical and physical contact to the

substrate, it is important that you use the

correct application pressure (generally 5 to

10 PSI [3,5 to 7,0 N/cm2]) and position the

tape correctly the first time.

The complete line of standard

dispensers available includes three

machines well suited for application of

shielding tapes. Available with liner take-

up attachments or liner removal capability,

these dispensers are designed to deliver

either random or definite lengths without

curling the tape:

•M712 (includes liner removal/wind-up

mechanism)

In addition, Electrical Markets

Division Technical Service can be

consulted for design of custom application

equipment for automatic

or semiautomatic production.

Product packaging

3M EMI Shielding Tapes are supplied on

easily removable liners and in widths to

meet customer needs. Multiple-length rolls

are also available.

3M™ Shielding Tapes are used as

ground planes or shields for electronic

cables and connectors. T

tape is

bonded to the cable’s conductive

sheath and to the metallic lip of the

connector to provide a complete shield

from end to end.

Shielding tapes

provide effective,

economical

shielding of seams

and apertures in

shielded rooms.

3M shielding tapes

provide a reliable,

durable contact

surface for

conductive gaskets

for EMI shielding of

the doors and panels

of electronic cabinets

and enclosures.

3M Shielding Tapes are commonly used between

transformer coil windings to reduce electrostatic

coupling and around the outside of coils, relays,

and other components to prevent broadband

EMI emissions.

All 3M shielding

tapes are supplied

on liners for easy

handling and die-

cutting. Many 3M

authorized

distributors and

converters provide

fabrication service.

3M is a trademark of 3M Company.

Important Notice

Before using this product, you must evaluate it and

determine if it is suitable for your intended

application. You assume all risks and liability

associated with such use.

Warranty; Limited Remedy;

Limited Liability.

3M’s product warranty is stated in its Product

Literature available upon request. 3M MAKES NO

OTHER WARRANTIES INCLUDING, BUT NOT

LIMITED TO, ANY IMPLIED WARRANTY OF

MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE. If this product is

defective within the warranty period stated above,

your exclusive remedy shall be, at 3M’s option, to

replace or repair the 3M product or refund the

purchase price of the 3M product. Except where

prohibited by law, 3M will not be liable for any

indirect, special, incidental or consequential

loss or damage arising from this 3M product,

regardless of the legal theory asserted.