3011(L) 2mmX1200M level winding roll. 3M™ Charge-Collection Solar Tape 3011 consists of a 28 g (1-oz) tin-plated deadsoft copper foil backing with a PET cover sheet and an electrically conductive, pressure-sensitive adhesive. This high-temperature adhesive is ideal for use in thin film solar applications requiring x, y and z-axis conductivity.