1345 Tape Embossed Tin-Plated Copper Foil Data Sheet Product Description Applications 3M 1345 Tape consists of an embossed 1- 3M 1345 Tape is typically used for ounce deadsoft tin-plated copper foil backing applications requiring excellent electrical and an aggressive pressure-sensitive acrylic conductivity from the application substrate adhesive. The edges of the embossed pattern through the adhesive to the foil backing. pressed into the foil cut through the adhesive Common uses include grounding and EMI layer to establish reliable metal-to-metal shielding in equipment, components, shielded contact between the backing and the rooms, etc. The tin plating on the copper foil application substrate. backing facilitates soldering and improves resistance to oxidation and discoloration. Embossed deadsoft 1-ounce tin-plated copper foil backing Shielding Effectiveness Conductivity through the adhesive Supplied on a removable liner for easy Many factors determine the true shielding handling and diecutting effectiveness of a shielding tape, including type and thickness of foil, adhesive type, Like all 3M shielding tapes, 3M 1345 is intimacy of contact, smoothness of application available in standard and custom widths and surface, strength and frequency of the EMI lengths. Standard length is 18 yards. signal, etc. However, using standard tests and fixtures, it is possible to determine a value for Widths from 1/4 to 23 the attenuation. Longer lengths up to several times normal For 3M 1345 Tape, typical shielding length, dependent upon width. Check with effectiveness (far field) is in the range of 75dB Customer Service. to 95dB (30 MHz to 1 GHz). Properties Typical Values 1 Backing thickness 1.4 mil (0,04mm) Total thickness (backing plus adhesive) 4.0 mil (.101mm) 1 Breaking strength 25 lb./in (44 N/10mm) 1 Adhesion to steel 45 oz/in (4.9 N/10mm) 2 Electrical resistance through adhesive 0.001 ohm 3 Flame retardancy Pass * Footnote: 1. Test method ASTM D 1000 2 2 2. MIL-STD-202 Method 307 maintained at 5 psi (3,4 N/cm ) measured over 1 in surface area. The edges of the embossing pattern in the foil backing penetrate through the nonconductive adhesive to make metal-to-metal contact with the application substrate. 3. UL-recognized for flame retardancy per UL 510, Product Category 0ANZ2, File E17385.3M is a trademark of 3M. Important Notice The statements contained herein are made in lieu of all All statements, technical information and recommendations warranties, expressed or implied, including but not limited to related to the Sellers products are based on information the implied warranties of merchantability and fitness for a believed to be reliable, but the accuracy or completeness particular purpose which warranties are hereby expressly thereof is not guaranteed. Before utilizing the product, the disclaimed. user should determine the suitability of the product for its intended use. The user assumes all risks and liability SELLER SHALL NOT BE LIABLE TO THE USER OR ANY whatsoever in connection with such use. OTHER PERSON UNDER ANY LEGAL THEORY, INCLUDING BUT NOT LIMITED TO NEGLIGENCE OR Any statements or recommendations of the Seller which are STRICT LIABILITY, FOR ANY INJURY OR FOR ANY not contained in the Sellers current publications shall have DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR no force or effect unless contained in an agreement signed CONSEQUENTIAL DAMAGES SUSTAINED OR by an authorized officer of the Seller. INCURRED BY REASON OF THE USE OF ANY OF THE SELLERS PRODUCTS THAT WERE DEFECTIVE. Electrical Products Division 6801 River Place Blvd. Austin, TX 78726-9000 800 676 8381 3M 1998