EMI Shielding Tapes
Product Selection Guide
Performance
Trusted
Tape Experts
from the
A wide variety of tapes for EMI shielding and grounding
• Copper,aluminum,andtin-platedcopperfoilbackings
•Conformablecopper-platedfabricbacking
• Smoothandembossedfoilsurfaces
• Conductiveandnonconductiveacrylicadhesives
• Linersonalltapesfordiecuttingandhandlingease
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 designed to contain signals emitted
from your components, thus preventing interference with
other circuits. They also can 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.
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.
Talk to your 3M sales representative about which standard
dispensers are best suited for your production process and
how to maximize performance with automated equipment.
3M™ Shielding Tapes are used as ground planes or
shields for electronic cables and connectors. The
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.
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.
3M™ Shielding Tapes provide
effective, economical shielding of
seams and apertures in shielded
rooms.
Typical Shielding Tape Applications
3M™ EMI Shielding Tapes
2
3M™ EMI Shielding Tapes
Shielding Effectiveness (S.E.) for selected tapes
3
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. Broadly 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 3M™ 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. The tapes are designed
to remain conductive even 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.
Conductive fabric tape
3M Fabric Tape CN-3190 is an anti-corrosion polyester rip-
stop fabric backing with an electrically conductive acrylic
adhesive. It provides effective copper-nickel shielding with
excellent flexibility and conformability as well as light
weight and high strength.
Adhesive
Both the conductive and nonconductive versions use the
same acid-free, corrosion-resistant acrylic resin.
Tape Construction
Figure 1 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 2
4
3M™ Conductive Fabrics
Shielding Effectiveness (S.E.) for selected fabrics
5
Technical Information – 3M™ EMI Shielding Tapes
Note: Values shown are typical and are not recommended for specification purposes.
Product specifications will be provided upon request.
Smooth Backing, Conductive Adhesive
Tape Product
Description
Roll
Length3
Backing
Thickness
Total
Thickness
Breaking
Strength4
Adhesion
to Steel4
Flame
Retardant5
Electrical
Resistance6
425 Aluminum foil,
acrylic adhesive
60 yds 2.8 mil
(0,07 mm)
4.6 mil
(0,12 mm)
30 lb/in
(52 N/10 mm)
47oz/in (5.1
N/10 mm)
N/A
1115B Aluminum foil,
acrylic adhesive
60 yds 4.5 mil
(0,114 mm)
6.0 mil
(0,152 mm)
40 lb/in
(70 N/10 mm)
52 oz/in
(5.6 N/
10 mm)
N/A 0.0065 Ω
1120 Aluminum foil,
acrylic adhesive
36 yds 2.0 mil
(0,05 mm)
4.0 mil
(0,10 mm)
16 lbs/in
(28 N/10 mm)
36 oz/in
(3.9N/10mm)
0.009 Ω
1126 Copper foil, acrylic
adhesive
36 yds 1.4 mil
(0,04 mm)
3.5 mil
(0,088 mm)
25 lb/in
(44 N/
10 mm)
36 oz/in
(3.9N/10mm)
0.003 Ω
®
®
1170 Aluminum foil,
conductive
adhesive
18 yds 2.0 mil
(0,05 mm)
3.2 mil
(0,08 mm)
20 lb/in
(35 N/
10 mm)
35 oz/in
(3,8 N/
10mm)
0.010 Ω
1181 Copper foil,
conductive
adhesive1
18 yds 1.4
(0,04 mm)
2.6 mil
(0,07 mm)
25 lb/in
(44 N/
10 mm)
35 oz/in
(3,8 N/
10 mm)
0.005 Ω
1182 Copper foil,
conductive
adhesive1 on
both sides
18 yds 1.4 mil
(0,05 mm)
3.5 mil
(0,09 mm)
25 lb/in
(44 N/10 mm)
35 oz/in
(3,8 N/
10 mm)
0.010 Ω
1183 Tin-plated
copper foil,
conductive
adhesive1
18 yds 1.4 mil
(0,04mm)
2.6 mil
(0,07mm)
25 lb/in
(44 N/10mm)
35 oz/in
(3,8
N/10mm)
0.005 Ω
®
®
®
®
Smooth Backing, Nonconductive Adhesive
Tape Product
Description
Roll
Length3
Backing
Thickness
Total
Thickness
Breaking
Strength4
Adhesion
to Steel4
Flame
Retardant5
Electrical
Resistance6
1125 Copper foil,
acrylic adhesive
36 yds 1.4 mil
(0,04 mm)
3.5 mil
(0,088 mm)
25 lb/in
(44 N/10 mm)
40 oz/in
(4,4 N/
10 mm)
N/A
1194 Copper foil,
nonconductive
adhesive
36 yds 1.4 mil
(0,04 mm)
3.0 mil
(0,08 mm)
25 lb/in
(44 N/
10mm)
40 oz/in
(4,4 N/
10mm)
N/A
®
®
1 Conductive particles in the adhesive provide the electrically conductive path between the substrate and the backing. (Figure 1, page 2)
2 The embossed pattern provides the electrically conductive path through the adhesive.(Figure 2, page 2)
3 Multiple-length rolls and custom slit widths up to 23” (58.4cm) are available by special order.
Te st me tho d s :
4 ASTM D 1000
5Most3MfoilshieldingtapesareULRecognized()forameretardancyperUL510,ProductCategoryOANZ2,FileE17385.
6Resistancemeasuredthroughtheadhesive.MIL-STD-202Method307maintainedat5PSI(3,4N/sqcm)measuredover1sqin.surfacearea.
®
6
Embossed Backing, Conductive-through-Adhesive
Conductive Fabric, Copper-Nickel
Tape Product
Description
Roll
Length3
Backing
Thickness
Total
Thickness
Breaking
Strength4
Adhesion
to Steel4
Flame
Retardant5
Electrical
Resistance6
1245 Embossed copper
foil, conductive-
through-adhesive2
18 yds 1.4 mil
(0,04 mm)
4.0 mil
(0,10 mm)
25 lb/in
(44 N/10 mm)
35 oz/in
(3,8 N/
10 mm)
0.001 Ω
1267 Embossed
aluminum foil,
conductive-
through-adhesive2
18 yds 2.0 mil
(0,05 mm)
5.0 mil
(0,13 mm)
20 lb/in
(35 N/10 mm)
35 oz/in
(3,8 N/10
mm)
0.005 Ω
1345 Embossed tin
-plated foil,
conductive-
through-adhesive2
18 yds 1.4 mil
(0,04 mm)
4.0 mil
(0,10 mm)
25 lb/in
(44 N/10 mm)
35 oz/in
(3,8 N/10
mm)
0.001 Ω
Tape Product
Description
Roll
Length3
Backing
Thickness
Total
Thickness
Breaking
Strength4
Adhesion
to Steel4
Flame
Retardant5
Electrical
Resistance6
CN-3190 Anti-corrosion
metallized
polyester rip-stop
fabric, conductive
adhesive
54.5 yds 3.1 mil
(0,08 mm)
4.3 mil
(0,11 mm)
40 lb/in
(70 N/
10 mm)
31 oz/in
(0.341 N/
mm)
0.005 Ω
CN-3490 Anti-corrosion,
metallized non-
woven fabric,
conductive
adhesive
54.5 yds 2.4 mil
(0,06 mm)
2.4 mil
(0,06 mm)
35 lbs/in(16
kgf/25 mm)
30 oz/in (800
gf/25 mm)
N/A 0.005 Ω
CN-4190 Anti-corrosion,
metallized
polyester rep-stop
fabric, conductive
adhesive
54.5 yds 4.3 mil
(0,11 mm)
3.1 mil
(0,08 mm)
35 lbs/in(16
kgf/25 mm)
40 oz/in(4.4
N/10 mm)
N/A 0.005 Ω
CN-4490 Anti-corrosion,
metallized non-
woven fabric,
conductive
adhesive
109.3 yds 2.0 mil
(0,05 mm)
2.0 mil
(0,05 mm)
35 lbs/in(16
kgf/25 mm)
40 oz/in(4.4
N/10 mm)
N/A 0.005 Ω
X-7001 Anti-corrosion,
metallized
polyester fabric,
conductive
adhesive both sides
10.9 yds 4.3 mil
(0,11 mm)
0,11 mm 35 lbs/in(16
kgf/25 mm)
6.4 N/cm N/A 0.015 Ω
(over a 25x25
mm area)
2191FR Anti-corrosion,
metallized non-
woven fabric,
conductive
adhesive
5.3 mil
(0,135 mm))
5.5 mil
(0,14 mm)
108 N/cm 2.1 N/cm 0.003 Ω
(over a 25x25
mm area)
®
®
®
®
1 Conductive particles in the adhesive provide the electrically conductive path between the substrate and the backing. (Figure 1, page 2)
2 The embossed pattern provides the electrically conductive path through the adhesive.(Figure 2, page 2)
3 Multiple-length rolls and custom slit widths up to 23” (58.4cm) are available by special order.
Te st me tho d s :
4 ASTM D 1000
5Most3MfoilshieldingtapesareULRecognized()forameretardancyperUL510,ProductCategoryOANZ2,FileE17385.
6Resistancemeasuredthroughtheadhesive.MIL-STD-202Method307maintainedat5PSI(3,4N/sqcm)measuredover1sqin.surfacearea.
®
7
3M™ EMI Shielding Tapes
Please recycle. Printed in USA.
© 3M 2011. All rights reserved.
80-6016-0532-4 ( 0111 3.0 )JH /
Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
USA
800-676-8381
Fax 800-828-9329
www.3M.com/oem
Long-term proven durability and reliability
3M has been providing adhesive-backed foil tapes for EMI
(electromagnetic interference) shielding and grounding
applications for well over 40 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 one of the first in the industry 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 allow 3M™ EMI
Shielding Tapes to exhibit the low contact resistance
necessary to achieve the level of shielding effectiveness
shown on the graph at the bottom of page 2.
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.
Our technically trained 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
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.
3M EMI Shielding Tapes are supplied on easily removable
liners and in widths to meet customer needs. Multiple-length
rolls are also available.
For any inquiries or requests regarding 3M EMI Shielding
Tapes, please contact Customer Service by phone at 800-
676-8381 or by FAX at 800-828-9329.
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 supplied
on liners for easy handling and
die-cutting. Many 3M authorized
distributors and converters provide
fabrication services.
More Shielding Tape Applications
Important Notice
Before using these products, you must evaluate them and
determine if they are 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 these products are 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 these 3M products, regardless of the legal theory
asserted.
3M is a trademark of 3M company.
