270 Series Vitreous Enamel Power Select 270 Type fixed resistors for applications FeatureS requiring wattage ratings from 12 to 1000 watts. • Terminals suitable for soldering The 270 Type resistors are equipped with lug termi- or bolt connection nals suitable for soldering or sturdy bolt connection. • High wattage applications When secure mounting is required, the hollow core of these resistors permit fastening with spring-type • Rugged lead free vitreous enamel coating brackets, thru bolts or thru bolts with slotted-steel • Flame resistant coating brackets. • All-welded construction Suitable for rugged applications, the 270 Type • RoHS compliant available resistors feature all-welded construction and durable lead free vitreous enamel coating. Mounting brackets • “Fast on” option – see terminal 538, not included with resistors. http://www.ohmite.com/techdata/terminals.pdf SerIeS SPeCIFICatIONS Series Wattage Ohms Core Code Voltage Std. Terminal Non-Inductive versions available; Other sizes available; Also available in L12 12 0.1-51K D 565 57 low cost Centohm or Silicone coating; Consult Ohmite. L25 25 0.15-100K K 625 40 * Maximum Voltage is based on L50 50 0.38-260K K 1625 40 Ohm’s Law [V=√P*R] as limited by the resistance value of specified product L100 100 0.23-101K M 2845 40 L175 175 0.13-101K P 3595 46 L225 225 0.16-129K P 4595 46 L500 500 0.38-218K S 4970 45 L1000 1000 0.69-392K S 8900 45 CharaCterIStICS 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% @ +25°C to 0% @ +350°C. Tolerance ±5% 1Ω and over (J); ±10% under 1Ω (K) Power rating Based on 25°C free air rating. Overload 10 times rated wattage for 5 seconds. Temperature coefficient 1 to 20Ω: ±400 ppm/°C; Above 20Ω: ±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 Resistance rating value 12W 3,900Ω 25W 12,000Ω 50W 35,000Ω 100W 75,000Ω Mounting Hardware see http://www.ohmite.com/techdata/lug-mounting.php (continued) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 113

270 Series Vitreous Enamel Power dImeNSIONS in./mm Series Wattage L D C Core Code* Std. Term.** L12 12 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 D 57 L25 25 2.0 / 50.8 0.562 / 14.3 0.313 / 7.94 K 40 L50 50 4.0 / 101.6 0.562 / 14.3 0.313 / 7.94 K 40 D C L100 100 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 M 40 L175 175 8.5 / 215.9 1.125 / 28.6 0.75 / 19.1 P 46 L L225 225 10.5 / 266.7 1.125 / 28.6 0.75 / 19.1 P 46 L500 500 12.0 / 304.8 2.50 / 63.5 1.75 / 44.5 S 45 L1000 1000 20.0 / 508.0 2.50 / 63.5 1.75 / 44.5 S 45 * http://www.ohmite.com/techdata/200-210-270-custom.pdf ** http://www.ohmite.com/techdata/terminals.pdf OrderINg INFOrmatION Standard Made-to-order Non-inductive Non-inductive Core Diameter F =(o Fpatisotn oanl)BlanNk==NStoann-dinadrductive RCooHmSpliant BlanNk==NStoann-dinadrudctive STeerem “iCnaolr eS ealnedction” RoHS Compliant L 2 5 J 1 0 0 E Coating Wattage Ohms Tolerance Series Wattage Tolerance Ohms 270 = Vitreous R500 = 0.500Ω J= 5% Coating J = 5% 1R0 = 1Ω 470 = Silicone Ceramic Terminal Type 1R00 = 1Ω K= 10% BlanCSk===CSViietlirnceotoonuhesm K= 10% 2125K50K0 === 2125,500,00Ω00Ω0Ω See “Rfoers Tisutbour lTaer rCmoinreasls” 2125K50K0R00 === 122,550,000Ω00Ω0Ω 25K5 = 25,500Ω See website for 25K5 = 25,500Ω custom core and terminal info Standard part numbers for 270 series Wattage Wattage 1 Ovha03ml. .u53ie1 c  1LLL2111 W222JJJaK13tRRtR035EE1E Ovha123ml873u000iec 1 2 LLLW111222aJJJtt123873000EEE Ohmic value PPSaruerffftii xxN o. L25J ––– 25 L50J––– 50 L100J––– 100 L175J –––175 L225J––– 225 L500J –––500 L1000J–––1000 Ohmic value PPSaruerffftii xxN o. L25J ––– 25 L50J ––– 50 L100J –––100 L175J –––175 L225J ––– 225 L500J ––– 500 L1000J–––1000 4.7  L12J4R7E 390  L12J390E 1 –––1R0E      2,500 –––2K5E     10  L12J10RE 470  L12J470E 2 –––2R0E      3,000 –––3K0E      12  L12J12RE 560  L12J560E 3 –––3R0E      3,500 –––3K5E  15  L12J15RE 1000  L12J1K0E 4 –––4R0E      4,000 –––4K0E   22  L12J22RE 1200  L12J1K2E 5 –––5R0E      5,000 –––5K0E      27  L12J27RE 1500  L12J1K5E 10 –––10RE      6,000 –––6K0E  33  L12J33RE 2200  L12J2K2E 15 –––15RE  7,500 –––7K5E     47  L12J47RE 2700  L12J2K7E 25 –––25RE      10,000 –––10KE      68  L12J68RE 4700  L12J4K7E 50 –––50RE      12,000 –––12KE  82  L12J82RE 10000  L12J10KE 75 –––75RE      15,000 –––15KE     100  L12J100E 18000  L12J18KE 100 –––100E      20,000 –––20KE     150  L12J150E 22000  L12J22KE 125 –––125E   25,000 –––25KE    51000  L12J51KE 150 –––150E      30,000 –––30KE   200 –––200E   35,000 –––35KE   = Standard values; check availability using the worldwide inventory search at www.ohmite.com 250 –––250E      40,000 –––40KE   500 –––500E      50,000 –––50KE     Red outlined values supplied in Silicone-Ceramic coatings 750 –––750E     60,000 –––60KE  instead of vitreous enamel. 800 –––800E   75,000 –––75KE    1,000 –––1K0E      100,000 –––100KE      1,500 –––1K5E     150,000 –––150KE  2,000 –––2K0E      200,000 –––200KE  250,000 –––250KE  114 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O hmite: 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