3 XYZ-Axis Electrically Conductive Tape 9712 Technical Data August, 2001 3M XYZ-Axis Electrically Conductive Tape 9712 is an isotropically conductive Product Description pressure sensitive tape. 3M tape 9712 conducts electricity through the thickness (Z- axis) and in the plane of the adhesive (X, Y planes) and is ideal for EMI/RFI shield and EMI/RFI gasket attachment to metal surfaces. The tape consists of a 3M adhesive loaded with conductive fibers. The result is a double-sided tape providing both good adhesion and good electrical performance. The conductive fibers in 3M tape 9712 also provide improved handling characteristics. 3M tape 9712 is ideal for attaching EMI shields to electronic and electrical devices. 3M tape 9712 may be used with many types of foil laminate shields, such as aluminum/PVC or copper/PVC laminates, to provide a customized shielding solution. This tape may also be used to attach conductive fabric/foam core EMI gaskets to electronic cabinetry. 3M tape 9712 may be applied in strips or die cut to specific shapes and sizes. Compared to screws or other mechanical connectors, 3M tape 9712 provides reduced assembly time and a solid bond line with no gaps which might result in EMI emission. Product Tape 9712 Construction Adhesive Type: Filled Acrylic Filler Type: Conductive Fibers Release Liner: Silicone-Treated Polycoated Kraft Paper Approximate Thickness: Tape Only: .005 in. (0.127 mm) Release Liner: .004 in. (0.10 mm)TM 3M XYZ-Axis Electrically Conductive Tape 9712 Typical Physical Note: The following technical information and data is based upon limited 3M testing conditions and should not be used for specification purposes. Properties and Performance Electrical Properties Characteristics Contact Resistance: Substrate Tested (Foil/Rigid Plate) Aluminum/ Aluminum/ Copper/ Copper/ Aluminum Stainless Steel Aluminum Copper < 24 < 21.5 < 16 < .66 Based upon four wire (Kelvin probe) resistance measurements made with crossed pieces of Foil/9712/Rigid plate construction using a 1.0 in x 1.0 in square piece of 3M tape 9712. The rigid metal surface was prepared with a Scotch-Brite pad to roughen the surface and cleaned with isopropyl alcohol. Minimum Overlap Length: 1/4 in. (6 mm) Minimum Overlap Width: 1/8 inch (3 mm) Adhesion Properties Adhesion in oz/in (g/cm) 20 min. at 24 hours at 20 min. at 24 hours at Substrate 72F (22C) 72F (22C) 158F (70C) 158F (70C) Stainless Steel > 41 (457) > 42 (468) > 43 (479) > 53 (590) Aluminum > 35 (390) > 33 (367) > 36 (401) > 43 (479) Copper > 37 (412) > 39 (434) > 43 (479) > 55 (613) Based upon a 90 degree peel sample, following ASTM D3330 test method. Aluminum foil (2 mil thick) was used as the flexible backing to the tape 9712. The substrates listed are all rigid metal plates. The 158F (70C) aged peel samples are indicative of the typical long term adhesion build expected at room temperature. Operative Temperature Range and Shelf Life Short Term Exposure (minutes, hours) Long Term (days, weeks) 250F (121C) 158F (70C) Shelf Life of Tape in Roll Form: 24 months from date of manufacture when stored in original cartons at 70F (21C) and 50% relative humidity. Available Widths: Standard Length Maximum Length* Available Sizes 1/4 inch - 14 inch 36 yd 108 yd (5 mm - 356 mm) (32.9 m) (98.8 m) Nominal Slitting Tolerance: 1/32 in (0.8 mm) *Special requirements for long lengths should be discussed with 3M Customer Service personnel. - 2 -