1120 Tape
Aluminum Foil with Conductive Adhesive
Data Sheet
Product Description
3M
™
1120 Tape consists of a 1-ounce deadsoft
aluminum foil backing and an electrically
conductive pressure-sensitive acrylic adhesive.
• Deadsoft 1-ounce aluminum foil backing
• Conductive acrylic adhesive
• Supplied on a removable liner for easy handling
and diecutting
• Meets flame spread requirement of UL 510
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.
Applications
3M 1120 tape is typically used for applications
requiring excellent electrical conductivity and is
designed for EMI/RFI shielding and cable wrap.
Typical Properties
Adhesive
Backing
Backing Thickness
Total Thickness
1
Color
Electrical Resistance
2
Flame Retardancy
3
Breaking Strength
4
Elongation
4
(% at break)
Adhesion to Steel
5
Typical Values
Acrylic Conductive
Aluminum
2.0 mils (0.05mm)
4.0 mils (0.100mm)
Silver Metallic
0.009 ohm
Pass
16 lbs/in (25N/10mm)
5%
36 oz/in (3.9N/10mm)
Note: Typical properties are not recommended for specification purposes. Product specifications will be provided
upon request.
Footnote:
1 Test Method ASTM D1000
2 Mil-STD-202 Method 303 maintained at 5 psi (3,4N/cm
2
) measured over 1 in
2
surface area. Conductive
particles in the adhesive provide the electrical path between the application substrate and the foil backing.
3 UL Recognized for flame retardancy per UL 510, Product Category OANZ2, File E17385.
4 Test Method ASTM D3759
5 Test Method ASTM D3330
3M is a trademark of 3M
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.
This product will be free from defects in material and manufacture as of the date of
purchase.
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 loss or damage arising from this 3M product, whether
direct, indirect, special, incidental or consequential regardless of the legal theory asserted.
Electrical Products Division
6801 River Place Blvd.
Austin, TX 78726-9000
http://www.3M.com/elpd/oem
Litho in USA.
© 3M IPC 2001 78-8125-9944-3-A
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