3M Shielded/Jacketed, Flat Cable .050 28 AWG Stranded, Twisted Pair, PVC/PVC 1785 Series Meets external wiring requirements of National Electrical Code, Article 725 UL listed for US and Canadian markets Expanded copper shielding provides easier termination than aluminum/mylar shielding 360 degree expanded copper shielding provides 20 db average shielding effectiveness Twist and flat repeat has variable length options See Regulatory Information Appendix (RIA) for chemical compliance information (RIA E1 & C1 apply) Date Modified: May 5, 2009 TS-0308-C Sheet 1 of 2 Physical Jacket Material: Polyvinyl Chloride (PVC) Color: Black Primary Material: PVC Color: 10 Color Repeat with Tan Common (UL) CL2 75C 28 AWG OR AWM 2912 3M NU Marking Standard: C AWM IIA/B 80C 150V FT1 EU <50V Conductors: 28 AWG, 7 36 AWG 7 0.127 Tinned Stranded Copper Shielding: Expanded Copper Electrical USA: N.E.C. 725 CL2 or AWM 150V Canada: 150V EU: <50V Voltage Rating: 9 Insulation Resistance: (Primary Cable) > 1 10 /10 ft. 3 m Unbalanced Balanced Characteristic Impedance: 67 118 24.7 pF/ft 81.0 pF/m 13.8 pF/ft 45.3 pF/m Capacitance: 0.11 H/ft 0.36 H/m 0.19 H/ft 0.62 H/m Inductance: 1.65 ns/ft 5.41 ns/m 1.63 ns/ft 5.35 ns/m Propagation Delay: 62% 62% Velocity of Propagation: Note: Unbalanced is measured between conductors within a pair with one conductor connected to the shield. Balanced is measured between conductors within a pair with the shield ofl ating. Environmental USA: CL2 75C or AWM: -20C to +80C Canada: 80C Temperature Rating: USA: N.E.C. 725, CL2 Canada: FT1 Flammability Rating: UL File No.: E118773, Power Limited Circuit Cable CL2: (or AWM Style 2912) 3M is a trademark of 3M Company. 3 Interconnect Solutions For technical, sales or ordering information call 3M Shielded/Jacketed, Flat Cable .050 28 AWG Stranded, Twisted Pair, PVC/PVC 1785 Series Number of 3M Part Number Dimension A Dimension B Conductors 10 (5 pair) 1785/10 0.63 16.0 0.450 .010 11.43 16 (8 pair) 1785/16 0.93 23.6 0.750 .015 19.05 20 (10 pair) 1785/20 1.13 28.7 0.950 .015 24.13 26 (13 pair) 1785/26 1.43 36.3 1.250 .015 31.75 34 (17 pair) 1785/34 1.83 46.5 1.650 .020 41.91 36 (18 pair) 1785/36 1.93 49.0 1.750 .020 44.45 C 40 (20 pair) 1785/40 2.13 54.1 1.950 .020 49.53 50 (25 pair) 1785/50 2.63 66.8 2.450 .020 62.23 60 (30 pair) 1785/60 3.13 79.5 2.950 .020 74.93 64 (32 pair) 1785/64 3.38 85.9 3.150 .020 80.01 Example of alternate twist and flat repeats Variable Flat-Repeat Length Section Through Termination Area Suffix Table Alternative Twist and Flat Repeats A Suffix Repeat (in.) Flat (in.) Blank B 20.0 2.0 (Standard) .050 .002 Typ TO 22.0 4.0 1.27 TB 7.5 1.0 TD 43.0 3.0 BP 9.0 1.5 *.12 .03 BA 10.5 2.0 3.0 BW 34.0 2.0 * 10 Color Repeat Paper .026 0.66 Min Brown/Tan Brown PVC Jacket Red /Tan Tan Orange /Tan 28 AWG, 7 X 36 AWG 7 X 0.127 Yellow /Tan Tinned Stranded Copper Conductors PVC Primary Green /Tan .005 0.13 Ref Insulation Blue /Tan Expanded Copper Violet /Tan Clear PVC Carrier Gray /Tan White /Tan Black /Tan Inch mm 2.0 .3 Tolerance Unless Noted 51 .0 .00 .000 20.0 .7 Inch .1 .05 .010 508 (See note 1) Dimensions for Reference Only * Caliper in Twist Area is .15 .03 3.8 Ordering Information 1785/XX XX XX Blank = Standard Number of Conductors SF = Splice Free (See Table) Blank = Standard Note: Variable Flat-Repeat Length 1. The twist-flat repeat can be specified from 8.5 inches (See Variable Flat-Repeat Length Suffix Table) (16.5 cm) to 48 inches (1.219 m), and the flat can be specified as anything over 1 inch (2.54 cm) 2. Available in standard 100 ft and 200 ft rolls, please specify when ordering. Contact 3M for availability of TS-0308-C Sheet 2 of 2 custom roll lengths or other special requirements. 3M is a trademark of 3M Company. 3 Interconnect Solutions For technical, sales or ordering information call