3M Glass Cloth Electrical Tape 79 with Acrylic Pressure-Sensitive Adhesive Data Sheet November 2008 Description 3M Glass Cloth Electrical Tape 79 is a 7-mil woven insulating glass cloth tape with an acrylic pressure-sensitive adhesive. This tape is used to electrically insulate and provide mechanical protection at temperatures to 302 F (150 C). This tape provides insulation and solvent-resistant protection for use as coil cover, anchor, banding and core, layer and crossover insulation. It is edge-tear resistant, conformable and printable. It also features a superb absorption of resin and varnishes. Agency Approvals, Self Certifications, MIL Specs UL Recognized Component listing for 302 F (150 C), Guide OANZ2, File E17385 RoHS Compliant 2002/95/EC means that the product or part (Product) does not contain any of the substances in excess of the maximum concentration values in EU Directive 2002/95/EC, as amended by Commission Decision 2002/618/EC, unless the substance is in an application that is exempt under RoHS. This information represents 3Ms knowledge and belief, which may be based in whole or in part on information provided by third party suppliers to 3M. Applications Used in a variety of coil/transformer and motor applications, including an outer wrap for bobbin wound coils, banding arbor wound coils, lead pad hold down, end turn and lead anchor and connection Used for banding and strapping applications up to 150C Typical Properties Data is not for specifications. Values are typical and should not be considered minimum or maximum. Properties measured at room temperature 73F (~23C) unless otherwise stated. Physical Property (Test Method) Typical Value (ASTM D1000 unless noted) US units (metric) Color White Adhesive Acrylic Backing Thickness 5.0 mils (0,127 mm) Total Thickness 7.0 mils (0,177 mm) Elongation (% at break) 5% Operating Temperature 150 C Adhesion to Steel 30 oz/in (3,3 N/10 mm) UL 510 Flame Retardant Yes 3 1 of 2 3M Glass Cloth Electrical Tape 79 Typical Properties Electrical Property (Test Method) Typical Value (ASTM D1000 unless noted) US units (metric) Dielectric Breakdown 3000 V Breaking Strength 150 lbs/in (262 N/10 mm) 2 Insulation Resistance 2.7 x 10 megohms CTI Material Group 1 Electrolytic Corrosion Factor 0.9 Specifications 3M Glass Cloth Electrical Tape 79 is a glass cloth electrical tape with acrylic pressure- sensitive adhesive. The tape shall be white and 7 mils (0,178 mm) thick. The tape shall be coated on one side with pressure-sensitive adhesive, which shall not require heat, moisture or other preparation prior to or subsequent to application. The adhesive coating shall be smooth and uniform and be free of lumps and bare spots. There shall be no separator between adjacent layers of the roll. The tape shall perform at a temperature of 302 F (150 C) without loss of physical or electrical properties. Shelf Life & This product has a 5-year shelf life from date of manufacture when stored in a humidity Storage controlled storage (50F/10C to 80F/27C and <75% relative humidity). Availability Electrical Tape 79 is available in standard and custom lengths and widths. Standard length is 60 yards. Please contact your local distributor available from 3M.com/electrical Where to Buy or call 1-800-676-8381. Important Notice All statements, technical information, and recommendations related to 3Ms products are based on information believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use. Any statements related to the product which are not contained in 3Ms current publications, or any contrary statements contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized officer of 3M. Warranty Limited This product will be free from defects in material and manufacture at the time of purchase. 3M Remedy Limited MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED OF Liability MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3Ms option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted. 3M is a trademark of 3M Company. 3 Electrical Markets Division 6801 River Place Blvd. Austin, TX 78726-9000 800 676 8381 Please recycle. FAX: 800 828 9329 3M 2008 All rights reserved. www.3M.com/electrical/oem 78-8124-4758-5 C 2 of 2