Features
■ Embossed deadsoft 1-ounce copper foil
■ backing
■ Conductivity “through the adhesive”
■ Supplied on a removable liner for easy handling and diecutting Like all 3M shielding tapes, 3M 1245 is available in standard and custom widths and lengths. Standard length is 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 1245 Tape is typically used for applications requiring excellent electrical conductivity from the application substrate through 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 1 25 lb./in (44 N/10mm) Adhesion to steel 1 35 oz/in (3,8 N/10mm)