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1181 Tape
Copper Foil with Conductive Adhesive
Data Sheet
Product Description
3M 1181 Tape consists of a 1-ounce
deadsoft copper foil bac king and a unique
electrically conductive pressure-sensitive
acryli c ad h e sive.
• Deadsoft 1-ounce copper foil backing
• Conductive acrylic adhesi ve
• Supplied on a removable liner for easy
handling and diecutti ng
Like all 3M shielding tapes, 3M 1181 is
available in standa rd and custom widths a nd
lengths. Standa rd length i s 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 requir i ng exce l le nt elec tri ca l
conductivi ty from the application substrate
through the adhesi ve to the f oil bac ki ng.
Common uses include grounding and EMI
shielding in equi pme nt, components, shielded
rooms, etc. The copper foil backing is
solderable and resists ox i dation and
discolorati on.
Shielding Effectiveness
Many factor s determine the true shie l ding
effectiveness of a shielding tape, including
type and thickness of f oil, adhesive type,
intimacy of c ontac t, smoothness of
application surface, strength and frequency of
the EMI signal, etc. Howeve r, usi ng standard
tests and fixtures, it is possible to determine a
value for the atte nuation.
For 3M 1181 Tape, typica l shielding
effectiveness (far field) is in the range of 60dB
to 80dB (30 MHz to 1 GHz).
Properties Typical Values
Backin g t hickness
Total thickness (backing plus adhesive)
Breaking strength 1 25 lb./in (44 N/10mm)
Adhesion to steel 1 35 oz/in (3,8 N/10mm)
Electrical resistance through adhesive
Flame re tardancy 3 Pass
* Footnot e: 1. Test method ASTM D 1000
2. MIL-STD-202 Method 3 07 main tained at 5 psi (3,4 N/cm
3. UL-recognized for flame retardancy per UL 510, Prod uct Category 0ANZ2, File E17385.
1
2
2
provide the electrical path between the application substrate and the foil backing.
1.4 mil (0,04mm)
2.6 mil (.066mm)
0.005 ohm
2
) measured over 1 in2 surface area. Conductive particles in the adhesive
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3M is a trademark of 3M.
Important Notice
All statements, technical information and recommendations
related to the Seller’s products are based on information
believed to be reliable, but the accuracy or completeness
thereof is not guaranteed. Before utilizing the product, the
user should determine the suitability of the product for its
intended use. The user assumes all risks and liability
whatsoever in connection with such use.
Any statements or recommendations of the Seller which are
not contained in the Seller’s current publications shall have
no force or effect unless contained in an agreement signed
by an authorized officer of the Seller. The statements
contained herein are made in lieu of all warranties,
Electrical Products Division
6801 River Place Bl vd.
Austin, TX 78726-90 00
800 676 8381
http://www.3m.com/elpd
expressed or implied, including but not limited to the implied
warrant ies of mer chanta bi lity an d fit nes s f or a particular
purpose which warranties are hereby expressly disclaimed.
SELLER SHALL NOT BE LIABLE TO THE USER OR ANY
OTHER PERSON UNDER ANY LEGAL THEORY,
INCLUDING BUT NOT LIMITED TO NEGLIGENCE OR
STRICT LIABILITY, FOR ANY INJURY OR FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES SUSTAINED OR
INCURRED BY REASON OF THE USE OF ANY OF THE
SELLER’S PRODUCTS THAT WERE DEFECTIVE.
© 3M 1998
78-8124-4702-3
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