SEMI-PRECISION POWER WIREWOUND RESISTORS ISO-9001 Registered T SERIES MIL-R-26 (RW), MIL-R-39007 (RWR) & COMMERCIAL STYLES Weldable and solderable leads High thermal conductivity, centerless ground ceramic cores for optimum heat distribution and dissipation. Silicone coat * * * * * * 0.1 ohm to 300K ohms All welded NOTE: Special MIL qualified 1.0 to 14 watts construction overcoat available when application requires lifetime 1 to 0.1% tolerance durability and meets with ease Non-inductive windings available new MIL-STD-202F Method 215G. Specify VC. Meets or exceeds all applicable MIL-R-26 & MIL-R-39007 ratings Established reliability documented failure rate 100% screening (S failure rate approval) SPECIFICATIONS: Style MIL-R-26 Style --RW81 RW70 RW80 --RW69 RW79 ----RW74 --RW67 --RW55 RW56 --RW78 RW68 Resistance Range (ohms) Commercial MIL-R-26 Min Max Min Max Wattage Rating U V 0.75 --1.0 --1.0 --2.0 --3.0 3.75 --3.0 3.0 --4.0 5.5 5.0 6.5 5.0 --6.0 7.5 5.0 6.5 7.0 9.0 --7.0 --14.0 10.0 13.0 10.0 ----11.0 0.1 4 --T-1/2 0.1 4.5 0.1 T-1/2-A81/LA268 0.1 12 0.1 T-1A-70/LA449 0.1 12 0.1 T-1-80/LA249 0.1 25 --T-2A * 0.1 20 0.1 T-2A-69/LA417 0.1 40 0.1 T-2B-79/LA461 0.1 38 --T-3* 0.1 45 --T-5* 0.1 94 0.1 T-5-74/LA446 0.1 65 --T-6 0.1 92 0.1 T-6-67/LA419 0.1 115 --T-7 * 0.1 200 0.1 T-7A-55 0.1 300 0.1 T-10A-56 0.1 300 --T-10* 0.1 300 0.1 T-10-78/LA433 0.1 300 0.1 T-10-68/LA433 *Available as radial lead = type TR. To designate non-inductive winding add prefix "N" to style. Style PR268 PR66 PR462 PR249 PR261 PR446 PR246 PR433 MIL-R-39007 Style RWR81 RWR82 RWR71 RWR80 RWR89 RWR74 RWR84 RWR78 Wattage at 25C 1 1.5 2 2 3 5 7 10 Resistance Range (ohms) Min 0.1 % Min 1.0% 0.499 0.1 0.499 0.1 0.499 0.1 0.499 0.1 0.499 0.1 0.499 0.1 0.499 0.1 0.499 0.1 --1 3.16 3.16 --2 10.5 ----38.3 --8.2 --3.4 9.1 --90.9 20 Max 1K 1.3K 16.2K 3.16K 4.12K 12.1K 12.4K 39.2K Maximum Working Voltage 54.77 67.1 109.5 154.9 306.2 244.9 346.4 457.2 540.8 685.5 698.2 773.3 1017.3 1183.2 2049.4 1974.8 1732.0 1816.6 Maximum Working Voltage 31.6 44.2 180.0 79.5 111.2 246.0 294.6 626.1 WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com 1 ISO-9001 Registered T SERIES GENERAL SPECIFICATIONS: Temperature Range Standard Temperature Coefficient Special Temperature Coefficients Insulation Resistance Derating IRC/Shallcross Style T-1/2 T-1/2-A81/LA268 T-1A-70/LA449 T-1-80/LA49 T-2A T-2A-69/LA417 T-2B-79/LA461 T-3 T-5 T-5-74/LA446 T-6 T-6-67/LA419 T-7 T-7A-55 T-10A-56 T-10 T-10-78/LA433 T-10-68/LA433 PR268 PR66 PR462 PR249 PR261 PR446 PR246 PR433 Characteristic U = -55C to +275C Characteristic V = -55C to +350C 20 ppm/C 10 up 50 ppm/C 1.0 to 9.9 400 ppm/C 0.50 to 0.999 650 ppm/C 0.1 to 0.490 Available from -30 ppm/C to +6000 ppm/C Temperature range for special TC's -50C to +150C 1000 megohms minimum dry at 100 volts DC Wattage rating based on operation at 25C Derate to zero at 275C & 350C for "U" and "V" style rating A Inches 0.330 (0.062) 0.250 (0.032) 0.406 (0.032) 0.406 (0.032) 0.500 (0.062) 0.500 (0.063) 0.560 (0.062) 0.625 (0.062) 0.875 (0.062) 0.875 (0.062) 1.000 (0.062) 1.000 (0.094) 1.185 (0.062) 1.375 (0.094) 2.000 (0.094) 1.812 (0.062) 1.780 (0.062) 1.875 (0.063) 0.250 (0.032) 0.312 (0.016) 0.812 (0.062) 0.406 (0.032) 0.560 (0.062) 0.875 (0.062) 0.875 (0.062) 1.78 (0.062) Lead Material: Tinned copperweld is standard. Also available: Weldable Grade A nickel (bare) Special Features: - Radial lead available. - Resistance network packages designed to individual customer requirements. - Temperature coefficient matching and tracking to 5 ppm. - High thermal conductivity core (Beryllium Oxide) available. - Ratio Tolerance matched sets available. C B mm 8.4 (1.6) 6.4 (0.8) 10.3 (0.8) 10.3 (0.8) 12.7 (1.6) 12.7 (1.6) 14.2 (1.6) 15.8 (1.6) 22.2 (1.6) 22.2 (1.6) 25.4 (1.6) 25.4 (2.4) 30.0 (1.6) 35.0 (2.4) 50.8 (2.4) 46.0 (1.6) 45.2 (1.6) 47.6 (1.6) 6.4 (0.8) 7.92 (0.4) 20.6 (1.6) 10.3 (0.8) 14.2 (1.6) 22.2 (1.6) 22.2 (1.6) 45.2 (1.6) Inches 0.078 (0.031) 0.085 (0.020) 0.094 (0.032) 0.094 (0.032) 0.187 (0.031) 0.188 (0.063) 0.187 (0.031) 0.250 (0.062) 0.312 (0.062) 0.312 (0.062) 0.312 (0.062) 0.313 (0.063) 0.312 (0.062) 0.469 (0.094) 0.469 (0.094) 0.375 (0.062) 0.375 (0.062) 0.344 (0.094) 0.085 (0.020) 0.078 (0.016) 0.188 (0.031) 0.094 (0.031) 0.187 (0.031) 0.312 (0.031) 0.312 (0.031) 0.375 (0.031) mm 2.0 (0.8) 2.2 (0.5) 2.4 (0.8) 2.4 (0.8) 4.8 (0.8) 4.8 (1.6) 4.8 (0.8) 6.3 (1.6) 7.9 (1.6) 7.9 (1.6) 8.0 (1.6) 8.0 (1.6) 8.0 (1.6) 12 (2.4) 12 (2.4) 9.5 (1.6) 9.5 (1.6) 8.7 (2.4) 2.2 (0.5) 1.98 (0.4) 4.8 (0.8) 2.4 (0.8) 4.8 (0.8) 7.9 (0.8) 7.9 (0.8) 9.53 (0.8) inches (0.002) 0.020 0.020 0.020 0.020 0.032 0.032 0.032 0.040 0.040 0.040 0.040 0.032 0.040 0.032 0.032 0.040 0.040 0.032 0.020 0.020 0.032 0.020 0.032 0.040 0.040 0.040 mm (0.05) 0.5 0.5 0.5 0.5 0.8 0.8 0.8 1.0 1.0 1.0 1.0 0.8 1.0 0.8 0.8 1.0 1.0 0.8 0.5 0.5 0.8 0.5 0.8 1.0 1.0 1.0 HOW TO ORDER: Sample Part No.: A RW79 Style Characteristic Resistance Value St. EIA/MIL Values Tolerance B=0.1%, D+0.5%, F=1% U 49R9 F Length B Diameter C Diameter For commercial equivalents: Style - Resistance - Tolerance 2 1 1/2" (38.1mm) Minimum Lead Length WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com