20 Series Vitreous Enamel Conformal Axial Lead Wirewound Resistors 5% Tolerance Standard 1.5 / 38.1 L SPECIFICATIONS The 20 Series axial lead resistors are both durable and economical. They have all the electrical attributes of the more expensive 90 Series resistors, including an all-welded construction. They offer the durability of a lead free conformal vitreous enamel coating and are ideal for computer, communications and industrial applications in which cost, quality and reliability are key considerations. D Material Coating: Conformal lead free vitreous enamel. Core: Ceramic. Terminals: Solder-coated axial lead. Derating Linearly from 100% @ +25C to 0% @ +350C. Electrical 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 FEATURES * Rugged vitreous enamel coating withstands high humidity and temperature cycling. * Durable construction, recommended for industrial applications where reliability is paramount. * All-welded construction. * Flame resistant lead free vitreous enamel coating. Dimensions (in. / mm) Length* Diam.* Voltage Lead ga. 0.406 / 10.3 0.156 / 4.0 75 24 0.406 / 10.3 0.219 / 5.6 65 20 0.500 / 12.7 0.220 / 5.6 135 20 1.000 / 25.4 0.276 / 7.0 330 20 1.250 / 31.8 0.394 / 10.0 450 20 1.844 / 46.8 0.394 / 10.0 720 20 Series Wattage Ohms 21 1 0.1-3.2K 22 2 0.1-4.4K 23 3 0.1-10K 25 5 0.1-28K 27 7 0.1-62K 20 10 0.1-100K 12.5 watt size available on special order *For units below 1, add 15% to body diameter, 10% to body length. ---62R ---68R ---75R ---82R ---100 ---120 ---125 ---150 ---180 ---200 ---220 ---225 ---250 ---270 ---300 ---330 ---350 ---390 ---400 ---450 ---470 ---500 ---560 ---600 ---680 ---750 ---800 ---820 ---900 ---1K0 ---1K1 ---1K2 ---1K5 = Most popular stock values = Stock values = Non-stock values subject to minimum handling charge per item 12 1,800 2,000 2,200 2,500 2,700 3,000 3,300 3,500 3,900 4,000 4,500 4,700 5,000 6,000 6,800 7,000 7,500 8,000 9,000 10,000 12,000 13,000 15,000 17,000 20,000 22,000 25,000 30,000 33,000 35,000 40,000 50,000 ---1K8 ---2K0 ---2K2 ---2K5 ---2K7 ---3K0 ---3K3 ---3K5 ---3K9 ---4K0 ---4K5 ---4K7 ---5K0 ---6K0 ---6K8 ---7K0 ---7K5 ---8K0 ---9K0 ---10K ---12K ---13K ---15K ---17K ---20K ---22K ---25K ---30K ---33K ---35K ---40K ---50K 20J--- 10 27J--- 7 25J--- 5 23J--- 3 Part No. Prefix Suffix 22J--- 2 Wattage 21J--- 1 20J--- 10 27J--- 7 25J--- 5 23J--- 3 62 68 75 82 100 120 125 150 180 200 220 225 250 270 300 330 350 390 400 450 470 500 560 600 680 750 800 820 900 1,000 1,100 1,200 1,500 Part No. Prefix Suffix 22J--- 2 Wattage 21J--- 1 27J--- 7 25J--- 5 23J--- 3 Ohmic value --- R10 --- R13 --- R15 --- R20 --- R25 --- R30 --- R33 --- R50 --- R75 --- 1R0 ---1R5 ---2R0 ---2R2 ---3R0 ---4R0 ---5R0 ---7R5 ---10R ---12R ---15R ---18R ---20R ---22R ---25R ---27R ---30R ---33R ---35R ---39R ---40R ---47R ---50R ---56R 20J--- 10 0.10 0.13 0.15 0.20 0.25 0.30 0.33 0.50 0.75 1 1.5 2 2.2 3 4 5 7.5 10 12 15 18 20 22 25 27 30 33 35 39 40 47 50 56 22J--- 2 Part No. Prefix Suffix 21J--- 1 Ohmic value Wattage Ohmic value STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES Shaded values involve very fine resistance wire and should not be used in critical applications without burnin and/or thermal cycling. Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 * Tel. 1-866-9-OHMITE * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com