270 Series Vitreous Enamel Power F e at u r e s Select 270 Type fixed resistors for applications requiring wattage ratings from 12 to 1000 watts. The 270 Type resistors are equipped with lug terminals suitable for soldering or sturdy bolt connection. When secure mounting is required, the hollow core of these resistors permit fastening with spring-type brackets, thru bolts or thru bolts with slotted-steel brackets. Suitable for rugged applications, the 270 Type resistors feature all-welded construction and durable lead free vitreous enamel coating. Mounting brackets not included with resistors. * Terminals suitable for soldering or bolt connection * High wattage applications * Rugged lead free vitreous enamel coating * Flame resistant coating * All-welded construction * RoHS compliant available * "Fast on" option - see terminal 538, http://www.ohmite.com/techdata/terminals.pdf S ER I E S S P E C I F I C AT I O N S Series L12 L25 L50 L100 L175 L225 L500 L1000 Wattage 12 25 50 100 175 225 500 1000 Ohms 0.1-51K 0.15-100K 0.38-260K 0.23-101K 0.13-101K 0.16-129K 0.38-218K 0.69-392K Core Code D K K M P P S S Voltage 565 625 1625 2845 3595 4595 4970 8900 Std. Terminal 57 40 40 40 46 46 45 45 Non-Inductive versions available; Other sizes available; Also available in low cost Centohm or Silicone coating; Consult Ohmite. * Maximum Voltage is based on Ohm's Law [V=P*R] as limited by the resistance value of specified product c h a r a c t e r is t ics Coating Lead free vitreous enamel. Large models (500 watts and up) are supplied in Silicone Ceramic. Also available in low-cost Centohm coating; Consult factory. Core Tubular ceramic. Terminals Solder coated radial lug. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Derating Linearly from 100% @ +25C to 0% @ +350C. Tolerance 5% 1 and over (J); 10% under 1 (K) Power rating Based on 25C free air rating. Overload 10 times rated wattage for 5 seconds. Temperature coefficient 1 to 20: 400 ppm/C; Above 20: 260 ppm/C Dielectric withstanding voltage 1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 to 225 watt rating (Measured from terminal to mounting bracket) Max. amps use the formula P/R Power limitations for When resistance exceeds the resistance values listed, derate the Power Rating by 25% to high resistance values improve reliability. No power derating necessary for ratings higher than 100W. Power rating 12W Resistance value 3,900 25W 12,000 100W 75,000 50W 35,000 Mounting Hardware see http://www.ohmite.com/techdata/lug-mounting.php 1-866-9-OHMITE * Int'l 1-847-258-0300 * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com 113 (continued) 270 Series Vitreous Enamel Power d i m e nsions in./mm Series Wattage L12 12 L25 25 L50 C D L L D C 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 2.0 / 50.8 50 0.562 / 14.3 4.0 / 101.6 0.562 / 14.3 Core Code* Std. Term.** 0.313 / 7.94 0.313 / 7.94 D 40 40 K L100 100 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 M L225 225 10.5 / 266.7 1.125 / 28.6 0.75 / 19.1 P 1000 20.0 / 508.0 L175 L500 L1000 175 8.5 / 215.9 500 1.125 / 28.6 12.0 / 304.8 2.50 / 63.5 2.50 / 63.5 0.75 / 19.1 1.75 / 44.5 1.75 / 44.5 * http://www.ohmite.com/techdata/200-210-270-custom.pdf 57 K 40 P 46 46 S 45 S 45 ** http://www.ohmite.com/techdata/terminals.pdf o r d e r in g info r m a t ion Standard Made-to-order Non-inductive F = Fast on Blank = Standard N = Non-inductive (optional) L Series Coating Blank = Vitreous C = Centohm S = Silicone Non-inductive Blank = Standard N = Non-inductive RoHS Compliant Core Diameter See "Core and Terminal Selection" RoHS Compliant 25J100E Wattage Coating 270 = Vitreous 470 = Silicone Ceramic Terminal Type See "Resistor Terminals for Tubular Cores" Wattage Tolerance Ohms J = 5% 1R0 = 1 K = 10% 250 = 250 1K0 = 1,000 25K = 25,000 25K5 = 25,500 See website for custom core and terminal info Ohms R500 = 0.500 1R00 = 1 250R = 250 1K00 = 1,000 25K0 = 25,000 25K5 = 25,500 Tolerance J = 5% K = 10% 114 1-866-9-OHMITE * Int'l 1-847-258-0300 * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com 2,500 3,000 3,500 4,000 5,000 6,000 7,500 10,000 12,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 75,000 100,000 150,000 200,000 250,000 L1000J---1000 Part No. Prefix Suffix ---2K5E ---3K0E ---3K5E ---4K0E ---5K0E ---6K0E ---7K5E ---10KE ---12KE ---15KE ---20KE ---25KE ---30KE ---35KE ---40KE ---50KE ---60KE ---75KE ---100KE ---150KE ---200KE ---250KE L500J--- 500 L225J--- 225 L175J--- 175 L100J--- 100 L50J--- 50 L25J--- 25 Ohmic value L500J--- 500 L225J--- 225 L100J--- 100 L175J--- 175 Red outlined values supplied in Silicone-Ceramic coatings instead of vitreous enamel. L50J--- 50 = Standard values; check availability using the worldwide inventory search at www.ohmite.com 1 2 3 4 5 10 15 25 50 75 100 125 150 200 250 500 750 800 1,000 1,500 2,000 Part No. Prefix Suffix ---1R0E ---2R0E ---3R0E ---4R0E ---5R0E ---10RE ---15RE ---25RE ---50RE ---75RE ---100E ---125E ---150E ---200E ---250E ---500E ---750E ---800E ---1K0E ---1K5E ---2K0E L25J--- 25 12 Watt L12J180E L12J270E L12J330E L12J390E L12J470E L12J560E L12J1K0E L12J1K2E L12J1K5E L12J2K2E L12J2K7E L12J4K7E L12J10KE L12J18KE L12J22KE L12J51KE Wattage 12 Watt L12JKR51E L12J1R0E L12J3R3E L12J4R7E L12J10RE L12J12RE L12J15RE L12J22RE L12J27RE L12J33RE L12J47RE L12J68RE L12J82RE L12J100E L12J150E Ohmic value 180 270 330 390 470 560 1000 1200 1500 2200 2700 4700 10000 18000 22000 51000 Ohmic value Wattage Ohmic value 0.51 1 3.3 4.7 10 12 15 22 27 33 47 68 82 100 150 L1000J---1000 Standard part numbers for 270 series Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Ohmite: L12J51K L25J40K L50J75R L50J10R L12J10K L12J18K L175J40K L100J750 L100J2K0 L100J1K0 L100J3K0 L100J4R0 L100J5K0 L50J175K L12J8K2 L50J75K L175J250 L50J1R0 L225J2R0 L50J100 L225J250 L25J35K L25J30K L50J200K L12J2K2 L12J470 L50J750 L100J2K5 L175J2K5 L50J5R0 L50J500 L225J2K0 L225J3K0 L100J150 L100J125 L100J1R0 L225J5K0 L100J100 L175J75K L225J75K L100J75R L100J25R L225J500 L175J500 L225J5R0 L50J20K L175J2K0 L50J25K L225J150 L175J150 L50J4R0 L12J82R L12J47R L12J56R L12J12R L12J15R L12J39R L12J18R L12J68R L12J10R L12J33R L12J22R L175J20K L100J5R0 L100J500 L225J20K L12J180 L12J150 L12J120 L12J100 L12J1R5 L25J50R L25J2R0 L12J390 L25J200 L25J15R L25J10R L12J330 L25J75R L12J2K7 L25J2K5 L25J50K L12J820 L50J2K5 L25J3R0 L175J60K L225J1K0 L225J60K L175J30K L225J30K L25J800 L50J3K0 L50J1K0 L25J4R0 L225J7K5 L100J1K5 L50J150 L175J1K5 L12J4R7 L25J12K