1245 Tape Embossed Copper Foil Data Sheet Product Description Applications 3M 1245 Tape consists of an embossed 1-ounce 3M 1245 Tape is typically used for applications deadsoft copper foil backing and an aggressive requiring excellent electrical conductivity from the pressure-sensitive acrylic adhesive. The edges of the application substrate through the adhesive to the foil embossed pattern pressed into the foil cut through the backing. Common uses include grounding and EMI adhesive layer to establish reliable metal-to-metal shielding in equipment, components, shielded rooms, contact between the backing and the application etc. The copper foil backing is solderable and resists substrate. oxidation and discoloration. Embossed deadsoft 1-ounce copper foil backing Shielding Effectiveness Conductivity through the adhesive Supplied on a removable liner for easy handling Many factors determine the true shielding and diecutting effectiveness of a shielding tape, including type and thickness of foil, adhesive type, intimacy of contact, Like all 3M shielding tapes, 3M 1245 is available in smoothness of application surface, strength and standard and custom widths and lengths. Standard frequency of the EMI signal, etc. However, using length is 18 yards. standard tests and fixtures, it is possible to determine a value for the attenuation. Widths from 1/4 to 23 For 3M 1245 Tape, typical shielding effectiveness Longer lengths up to several times normal length, (far field) is in the range of 75dB to 85dB (30 MHz dependent upon width. Check with Customer to 1 GHz). Service. 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 35 oz/in (3,8 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.Important Notice If any goods supplied or processed by or on behalf of 3M prove on Technical information provided by 3M is based on experience and/or tests inspection to be defective in material or workmanship, 3M will (at its believed to be reliable, but their accuracy is not guaranteed and the results may option) replace the same or refund to the Buyer the price paid for the not be relevant to every users application. For this reason 3M does not accept goods or services. Except as set our above, all warranties and responsibility or liability, direct or consequential, arising from reliance upon any conditions, whether express or implied, statutory or otherwise are information provided and the user should determine the suitability of the products excluded to the fullest extent permissible at law. for their intended use. Nothing in this statement will be deemed to exclude or 3M and Scotchcast are trademarks of the 3M Company. Printed in restrict 3Ms liability for death or personal injury arising from its negligence. All the UK. questions of liability relating to 3M products are governed by the sellers terms of 3M United Kingdom PLC, 1999 sale subject where applicable to the prevailing law 3M Ireland 3M United Kingdom PLC Electrical products Group Electrical Products Group Innovation 3M House, Adelphi Centre Hudson Road Jan. 2000 Dun Loaghaire, CO. Dublin, Ireland Bedford MK41 0HR Tel: (01) 2803555 Tel: 01234 268868 Fax: (01) 2803509 Fax: 01234 229433