3m1245 EMI Embossed Copper Shielding Tape
Product Description
3M 1245 Tape consists of an embossed 1-ounce deadsoft copper foil
backing and an aggressive pressure-sensitive acrylic adhesive.The
edges of the embossed pattern pressed into the foil cut through the
adhesive layer to establish reliable metal-to-metal contact between
the backing and the application substrate.
• Embossed deadsoft 1-ounce copper foil backing
• Conductivity “through the adhesive”
• Supplied on a removable liner for easy handling and diecutting
Applications
3M 1245 Tape is typically used for applications requiring excellent
electrical conductivity from the application substratethrough 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 1245 Tape, typical shielding effectiveness (far field) is in
the range of 75dB to 85dB (30 MHz to 1 GHz). .
Properties Typical Values
Backing thickness 1 1.4 mil (0,04mm)
Total thickness (backing plus adhesive) 4.0 mil (.101mm)
Breaking strength 25 lb./in (44 N/10mm)
Adhesion to steel 35 oz/in (3,8 N/10mm)
Electrical resistance through adhesive 0.001 ohm
Flame retardancy Pass
