3M™ Charge-Collection Solar Tape 3007, 194 mm x 66.5 m, 1 Roll/Case. 3M™ Charge-Collection Solar Tape consists of a 28 g ( 1-oz) tin-plated deadsoft copper foil backing 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.