7303 Anisotropic Conductive Film Adhesive Tape

Scotch-Weld™ 40 Contact Adhesive 3M 9313

3M™ Anisotropic Conductive Film (ACF) Adhesive 7303 is a heat-bondable,electrically conductive adhesive film. It has a slight amount of tack at room temperature and consists of a thermosetting epoxy/acrylate adhesive matrix randomly loaded with conductive particles. These particles allow interconnection of circuit lines through the adhesive thickness after bonding, but are spaced far enough apart for the product to be electrically insulating in the plane of the adhesive.
Application of heat and pressure causes the adhesive initially to flow and to bring the circuit pads into contact by trapping the conductive particles. The thermoset rapidly cures and provides mechanical strength. ACF 7303 may be used to bond a flexible printed circuit to another flexible printed circuit or to a printed circuit board