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 die cutting
Solderable copper foil backing
Resists oxidation and discoloration
Backing thickness: 1.4 mil
Total thickness (backing plus adhesive): 4.0 mil (0.1 mm)