TWM/TWW Series The TWM/TWW series radial terminal power resistors offer significant board space savings over axial terminal products. Generated heat is also kept away from the circuit board. They are recommended for commercial applications requiring low cost. FEATURES SPECIFICATIONS • Economical Commercial Grade for general purpose use • Wirewound and Metal Oxide construction • Wide resistance range • Flameproof inorganic construction Material Housing: Ceramic Core: Fiberglass or metal oxide Filling: Cement based Electrical Tolerance: 5% standard Temperature coeff.: .01-20Ω ±400ppm/°C 20-10Ω ±350ppm/°C Dielectric withstanding voltage: 1,000VAC Short time overload: TWW: 10x rated power for 5 sec. TWM: 5x rated power for 5 sec. Operating Temp.: -55°C to 275°C Storage Temp.: 6°C to 36°C DERATING Percent Rated Watts 100 80 60 40 Ceramic Housed Radial Terminal Power 0.49" ±.04 12.5mm ±1 0.35" ±.04 9 mm ±1 H (marked surface) 0.14" ±.04 3.5mm ±1 20 gauge 0.20" ±.08 5.0mm ±2 0.20" ±.04 5mm ±1 20 Series Wattage Ohms Height (in./mm) Voltage Element TWW3 3 .01-39 0.98 / 25 250 Wire TWW5 5 .01-47 0.98 / 25 350 Wire TWW10 10 .04-990 1.97 / 50 750 Wire TWM3 3 43-50K 0.98 / 25 250 Metal oxide TWM5 5 51-50K 0.98 / 25 350 Metal oxide TWM10 10 1000-50K 1.97 / 50 750 Metal oxide 0 70 100 150 200 250 275 Ambient Temperature, °C O R D E R I N G I N F O R M AT I O N Tolerance J = 5% E = RoHS compliant TWW3JR05E Series Wattage Resistance Value TWM = Ceramic housed 3 Example: metal oxide radial 5 R05 = 0.05Ω TWW= Ceramic housed 10 R56 = 0.56Ω wirewound radial 1R0 = 1Ω 8R2 = 8.2Ω 270 = 270Ω 1K0 = 1,000Ω 8K2 = 8,200Ω 10K =10,000Ω 3 5 TWM10J– 10 Ohmic value TWM10J– 10 TWM5J– 750 820 1000 1500 2000 2700 3000 3300 3900 4300 4700 5600 6800 7500 8200 10000 Part No. Prefix Suffix ––– 750E ––– 820E ––– 1K0 ––– 1K5 ––– 2K0 ––– 2K7 ––– 3K0 ––– 3K3 ––– 3K9 ––– 4K3 ––– 4K7 ––– 5K6 ––– 6K8 ––– 7K5 ––– 8K2 ––– 10K TWM3J– 5 43 47 56 68 75 82 100 150 200 270 300 330 390 430 470 560 680 3 TWM3J– Ohmic value TWW10J– 10 5 3 43 47 56 68 75 82 100 150 200 270 300 330 390 430 470 560 680 750 820 TWW5J– Ohmic value TWW3J– TWW10J– 10 5 TWW5J– 3 TWW3J– Ohmic value 5 TWW10J– 10 TWW5J– 3 TWW3J– 1.5 2.0 2.7 3.0 3.3 3.9 4.3 4.7 5.6 6.8 7.5 8.2 10 15 20 27 30 33 39 Part No. Prefix Suffix ––– 43RE ––– 47RE ––– 56RE ––– 68RE ––– 75RE ––– 82RE ––– 100E ––– 150E ––– 200E ––– 270E ––– 300E ––– 330E ––– 390E ––– 430E ––– 470E ––– 560E ––– 680E Wattage Part No. Prefix Suffix –––43RE –––47RE –––56RE –––68RE –––75RE –––82RE –––100E –––150E –––200E –––270E –––300E –––330E –––390E –––430E –––470E –––560E –––680E –––750E –––820E Wattage Part No. Prefix Suffix –––1R5E –––2R0E –––2R7E –––3R0E –––3R3E –––3R9E –––4R3E –––4R7E –––5R6E –––6R8E –––7R5E –––8R2E –––10RE –––15RE –––20RE –––27RE –––30RE –––33RE –––39RE S TA N D A R D PA R T N U M B E R S F O R T W M S E R I E S Wattage Part No. Prefix Suffix 0.01 –––R01E 0.02 –––R02E 0.03 –––R03E 0.04 –––R04E 0.05 –––R05E 0.10 –––R10E 0.15 –––R15E 0.20 –––R20E 0.27 –––R27E 0.30 –––R30E 0.33 –––R33E 0.39 –––R39E 0.43 –––R43E 0.47 –––R47E 0.56 –––R56E 0.68 –––R68E 0.75 –––R75E 0.82 –––R82E 1.0 –––1R0E Wattage Ohmic value Wattage TWM5J– S TA N D A R D PA RT N U M B E R S F O R T W W S E R I E S Check product availability at www.ohmite.com Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 41