20 Series Vitreous Enamel Conformal Axial Terminal Wirewound, 5% Tolerance Std. FeatureS Rugged vitreous enamel coating withstands high The 20 Series axial terminal resistors are both humidity and temperature cycling. durable and economical. They have all the electrical Durable construction, recommended for industrial attributes of the more expensive 90 Series resistors, applications where reliability is paramount. including all-welded construction. They offer the durability of a lead free conformal All-welded construction. vitreous enamel coating and are ideal for computer, Flame resistant lead free vitreous enamel coating. communications and industrial applications in which RoHS compliant Add E suffix to part number to cost, quality, and reliability are key considerations. specify. SerieS SpeCiFiCationS Series Wattage Ohms Max. Voltage* 21 1 1.0-3.0K 75 22 2 1.0-3.0K 65 23 3 0.1-10K 135 25 5 0.1-28K 330 27 7 0.1-25K 450 20 10 0.1-100K 720 12.5 watt size available on special order *Maximum Voltage is based on Ohms Law V=(P*R) as limited by the resis- tance value of specified product CharaCteriStiCS Coating Conformal lead free vitreous enamel Core Ceramic. Terminals Solder-coated axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Derating Linearly from 100% +25C to 0% +350C Tolerance 5% standard other tolerances available Power rating Based on 25C free air rating (other wattages available) Overload Under 7 watts: 5 times rated wattage for 5 seconds 7 watts and over: 10 times rated wattage for 5 seconds Temperature coefficient 1 to 9.99 ohms: 50 ppm/C 10 ohms and over: 30 ppm/C DimenSionS (in./mm max.) Series Wattage Length* (max.) Diam.* (max.) Lead ga. 21 1 0.421 / 10.7 0.156 / 4.0 24 22 2 0.421 / 10.7 0.219 / 5.6 20 1.5 in. / 38.1mm LD min. 23 3 0.515 / 13.1 0.220 / 5.6 20 25 5 1.015 / 25.8 0.276 / 7.0 20 27 7 1.265 / 32.1 0.394 / 10.0 20 20 10 1.859 / 47.2 0.394 / 10.0 20 *For units below 1, add 15% to body diameter, 10% to body length. (continued) 80 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 20 Series Vitreous Enamel Conformal Axial Terminal Wirewound, 5% Tolerance Std. orDerinG inFormation Standard part numbers Wattage Wattage Wattage Part No. Part No. Part No. Prefix Prefix Prefix Suffix Suffix Suffix 0.10 R10 62 62R 1,800 1K8 0.13 R13 68 68R 2,000 2K0 0.15 R15 75 75R 2,200 2K2 0.20 R20 82 82R 2,500 2K5 0.25 R25 100 100 2,700 2K7 0.30 R30 120 120 3,000 3K0 0.33 R33 125 125 3,300 3K3 0.50 R50 150 150 3,500 3K5 0.75 R75 180 180 3,900 3K9 1 1R0 200 200 4,000 4K0 1.5 1R5 220 220 4,500 4K5 2 2R0 225 225 4,700 4K7 2.2 2R2 250 250 5,000 5K0 3 3R0 270 270 6,000 6K0 4 4R0 300 300 6,800 6K8 5 5R0 330 330 7,000 7K0 7.5 7R5 350 350 7,500 7K5 10 10R 390 390 8,000 8K0 12 12R 400 400 9,000 9K0 15 15R 450 450 10,000 10K 18 18R 470 470 12,000 12K 20 20R 500 500 13,000 13K 22 22R 560 560 15,000 15K 25 25R 600 600 17,000 17K 27 27R 680 680 20,000 20K 30 30R 750 750 22,000 22K 33 33R 800 800 25,000 25K 35 35R 820 820 30,000 30K 39 39R 900 900 33,000 33K 40 40R 1,000 1K0 35,000 35K 47 47R 1,100 1K1 40,000 40K 50 50R 1,200 1K2 50,000 50K 56 56R 1,500 1K5 = Standard values Shaded values involve ver y fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling. = Non-standard values subject to minimum handling charge per item RoHS Compliant 21JR10E 20 Series Wattage Tolerance Resistance Value Vitreous Enamel 1= 1W J = 5% R10 = 0.10 Axial Lead 2 1R0 = 1.0 Wirewound 3 10R = 10.0 5 250 = 250 7 1K0 = 1,000 0= 10W 4K5 = 4,500 50K = 50,000 rev 6/20-1 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 81 Ohmic value 21J 1 22J 2 23J 3 25J 5 27J 7 20J 10 Ohmic value 21J 1 22J 2 23J 3 25J 5 27J 7 20J 10 Ohmic value 21J 1 22J 2 23J 3 25J 5 27J 7 20J 10