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21012P57R500JE Datasheet(PDF) 1 Page - Ohmite Mfg. Co. |
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21012P57R500JE Datasheet(HTML) 1 Page - Ohmite Mfg. Co. |
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1 / 1 page 32 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 • info@ohmite.com L D C Fea tures • Terminals suitable for soldering or bolt connection. • Adjustable lug supplied. • High wattage applications. • All-welded construction. • Rugged lead free vitreous enam- el coating. • Flame resistant coating. • Thumb-screw-adjustable lug available (Part No. 2160) for 1.125” core resistors. • RoHS compliant product avail- able. Add “E” suffix to part num- ber to specify. Dimensions (in. / mm) Core standard series Wattage Ohms L D C Code Voltage terminal D12 12 1.0-10K 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 D 565 57 D25 25 1.0-25K 2.0 / 50.8 0.562 / 14.3 0.313 / 7.94 K 625 40 D50 50 1.0-100K 4.0 / 101.6 0.562 / 14.3 0.313 / 7.94 K 1625 40 D75 75 1.0-100K 6.0 / 152.4 0.562 / 14.3 0.313 / 7.94 K 2625 40 D100 100 1.0-100K 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 M 2845 40 D175 175 1.0-100K 8.5 / 215.9 1.125 / 28.6 0.75 / 19.1 P 3595 46 D225 225 1.0-100K 10.5 / 266.7 1.125 / 28.6 0.75 / 19.1 P 4595 46 D500 500 1.5-15K 12.0 / 304.8 2.50 / 63.5 1.75 / 44.5 S 4970 45 D1000 1000 3.0-27.7K 20.0 / 508.0 2.50 / 63.5 1.75 / 44.5 S 8900 45 Other sizes available; contact Ohmite. Also available in low cost Centohm or Silicone coating; contact Ohmite. Terminals: Solder coated radial lug. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Adjustable terminal: Nickel plated steel. (Screwdriver type adjustable lug supplied standard. Other types, including silver con- tact units, available.) Derating: Linearly from 100% @ +25°C to 0% @ +350°C. Electrical Tolerance: ±10% (K) Power rating: Based on 25°C free air rating. The stated watt- age rating applies only when the entire resistance is in the circuit. Setting the lug at an intermediate point reduces the wattage rat- ing by approximately the same proportion. Example: If the lug is set at half resistance, the watt- age is reduced by approximately one-half. Overload: 10 times rated wattage for 5 seconds. Temperature coefficient: ±260 ppm/°C Dielectric withstanding voltage: 1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 and 225 watt rat- ing (measured from terminal to mounting bracket) To calculate max. amps: use the formula √P/R. Power limitations for high resis- tance values: When resistance exceeds the resistance values listed below, derate the Power Rating by 25% to improve reliability: Power Resistance rating value 12W 4,500 Ω 25W 9,000 Ω 50W 20,000 Ω 75W 35,000 Ω 100W 50,000 Ω No power derating necessary for ratings higher than 100W. See page 36 for mounting hardware Choose Ohmite’s 210 Type adjustable resistors for applications requiring settings at different resistance values. These wire- wound resistors are equipped with an adjustable lug, making them ideal for adjusting circuits, obtaining odd resistance values and setting equipment to meet various line voltages. 210 Type resistors feature a hollow core to permit secure fastening with spring-type clips or thru bolts with washers. They also offer the durability of lead free vitreous enamel coating and all-welded construction. Mounting brackets not included with resistors. 210 Series Dividohm® Vitreous enamel adjustable Power St andard p ar t number S for 210 Serie S = Standard values; check availability using the worldwide inventory search at www.ohmite.com 1.0 –––1R0E 2 –––2R0E 3 –––3R0E 4 –––4R0E 5 –––5R0E 7.5 –––7R5E 10 –––10RE 15 –––15RE 20 –––20RE 25 –––25RE 50 –––50RE 75 –––75RE 100 –––100E 150 –––150E 200 –––200E 250 –––250E 300 –––300E 400 –––400E 500 –––500E 750 –––750E 800 –––800E 1,000 –––1K0E 1,250 –––1K25E 1,500 –––1K5E 2,000 –––2K0E 2,500 –––2K5E 3,000 –––3K0E 4,000 –––4K0E 5,000 –––5K0E 6,000 –––6K0E 7,000 –––7K0E 7,500 –––7K5E 10,000 –––10KE 12,000 –––12KE 15,000 –––15KE 20,000 –––20KE 25,000 –––25KE 50,000 –––50KE 100,000 –––100KE Wattage Wattage Wattage Part No. Prefix Suffix Part No. Prefix Suffix Part No. Prefix Suffix m ade-to-order See website for custom core and terminal info ordering inf o �������� Tolerance J= 5% K= 10% Ohms 1R0 = 1 Ω 250 = 250 Ω 1K0 = 1,000 Ω 25K = 25,000 Ω 25K5 = 25,500 Ω RoHS Compliant Series Wattage Coating Blank =Vitreous C= Centohm S= Silicone 50K Ω and 100KΩ resistance values involve very fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling. � � � � � � � � � � � � � � Tolerance J = 5% K = 10% Core Diameter See “Core and Terminal Selection” Ohms R500 = 0.500 Ω 1R00 = 1 Ω 250R = 250 Ω 1K00 = 1,000 Ω 25K0 = 25,000 Ω 25K5 = 25,500 Ω RoHS Compliant Coating 210 = Vitreous 410 = Silicone Ceramic 610 = Centohm Wattage Terminal Type See “Resistor Terminals for Tubular Cores” sP e C i F i C a ti ON s Adjustability is 10% to 90% of full value. Wattage is proportional to this adjusted resistance value. Material Coating: Lead free vitreous enamel. Core: Tubular ceramic. |
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