FEATURES SPECIFICATIONS • Ideal for current sensing applications • 1% Tolerance standard, others available • Fixed resistance measuring point “M” • Low inductance (non-inductive below 0.25Ω) • RoHS compliant product available; add “E” suffix to part number to specify Material Terminals: Solder-plated copper terminals or copper clad steel depending on ohmic value. Encapsulation: Silicone molding compound. Derating Linearly from 100% @ +25°C to 0% @ +275°C. Electrical Tolerance: ±1% standard. Others available. Power rating: Based on 25°C free air rating. Overload: 5 times rated wattage for 5 seconds. Dielectric withstanding voltage: 1000 VRMS for 3 and 5 watt; 500 VRMS for 2 watt. Insulation resistance: Not less than 1000MΩ. Thermal EMF: Less than ±2µV/°C. Temperature range: -55°C to 275°C. 700 Temperature Coefficient of Resistance 600 ppm/°C 500 2 watt 3 watt 5 watt 400 300 200 100 0 0 10 20 30 Milliohms 40 50 FEATURES • Ideal for current sensing applications • 1% Tolerance standard, others available • Low Inductance (non-inductive below 0.25Ω) • Tinned Copper Leads • RoHS Compliant SPECIFICATIONS Material Terminals: Tinned Copper Leads Encapsulation: Silicone Molding Compound Derating Linearly from 100% at +25˚C to 0% at +200˚C Electrical Resistance Range: 0.005Ω to 0.100Ω standard Standard Tolerance: ±1%; others available Operating Temperature Range: -55˚C to +200˚C Temperature Coefficient of Resistance, 0˚C to 85˚C: ≥0.015Ω: ±50 PPM/˚C <0.015Ω: ±100 PPM/˚C Environmental Performance: Exceeds the requirements of MIL-PRF-49465 Power rating: Based on 25˚C free air rating. Overload: 5 times rated wattage for 5 seconds Dialectric withstanding voltage: 1500 VAC for 4.5 and 7 watt 1000 VAC for 3 watt Insulation resistance: Not less than 1000 MΩ Thermal EMF: Less than ±2µV/˚C S TA N D A R D PA RT N U M B E R S F O R 1 0 S E R I E S Ohmic value 0.005 0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.075 0.080 0.090 0.100 0.150 0.200 0.250 2 watt 12FR005 12FR010 12FR015 12FR020 12FR025 12FR030 12FR040 12FR050 12FR060 12FR070 12FR080 12FR090 12FR100 2 Terminal 3 watt 13FR005 13FR010 13FR015 13FR020 13FR025 13FR030 13FR040 13FR050 13FR060 13FR070 13FR080 13FR090 13FR100 13FR150 13FR200 5 watt 15FR005 15FR010 15FR015 15FR020 15FR025 15FR030 15FR040 15FR050 15FR060 15FR070 15FR080 15FR090 15FR100 15FR150 15FR200 15FR250 3 watt 13FPR005E 13FPR010E 13FPR015E 13FPR020E 13FPR025E 13FPR030E 13FPR040E 13FPR050E 13FPR060E 13FPR070E 13FPR075E 13FPR080E 13FPR090E 13FPR100E 4 Terminal 4.5 watt 14FPR005E 14FPR010E 14FPR015E 14FPR020E 14FPR025E 14FPR030E 14FPR040E 14FPR050E 14FPR060E 14FPR070E 14FPR075E 14FPR080E 14FPR090E 14FPR100E 7 watt 17FPR005E 17FPR010E 17FPR015E 17FPR020E 17FPR025E 17FPR030E 17FPR040E 17FPR050E 17FPR060E 17FPR070E 17FPR075E 17FPR080E 17FPR090E 17FPR100E 10 Series Axial Wire Element Current Sense L max. 1.562 ±0.062 / 39.7 ±1.6 d ±.002 / ±0.05 D ±.010 / ±0.3 M Two Terminal Axial Dimensions (in. / mm) Series Wattage Ohms Length Diam. “M” Lead ga. 12 2 0.005-0.10 0.416 / 10.6 0.094 / 2.4 1.156 / 29.4 20 13 3 0.005-0.20 0.570 / 14.5 0.205 / 5.2 1.310 / 33.3 20 15 5 0.005-0.25 0.935 / 23.8 0.330 / 8.4 1.675 / 42.5 18 L +.015 / +0.4 A (min.) D +.015 / +0.4 B ±.010 / ±0.03 0.032 ±.002 0.81±.05 (20 AWG) Four Terminal Axial Dimensions (in. / mm) Series Wattage Ohms Length Diam. A B 13 3 0.005-0.1 0.625/15.9 0.200/5.08 1.25/31.8 0.125/3.18 14 4.5 0.005-0.1 1.060/26.9 0.335/8.51 1.50/38.1 0.200/5.08 17 7 0.005-0.1 1.500/38.1 0.375/9.53 1.50/38.1 0.200/5.08 Ohmite’s Four-terminal Current-sense Resistors are specifically designed for low-resistance applications requiring the highest accuracy and temperature stability. This four-terminal version of Ohmite’s 10 Series resistor is specially designed for use in a Kelvin configuration, in which a current is applied through two opposite terminals and sensing voltage is measured across the other two terminals . The Kelvin configuration enables the resistance and temperature coefficient of the terminals to be effectively eliminated. The four terminal design also results in a lower temperature coefficient of resistance and lower self-heating drift which may be experienced on two-terminal resistors. The requirement to connect to the terminals at precise test points is eliminated, allowing for tighter tolerancing on the end application. O R D E R I N G I N F O R M AT I O N Wattage Terminals Blank = 2 terminals P = 4 terminals RoHS Compliant ��������� 10 Series Tolerance Ohm Value F = 1% Example: D= 0.5% R050= 0.05� Check product availability at www.ohmite.com 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 • [email protected] 17