FHR 2/4-6520 ... 120120 • Power Rating from to 1000A • High Stability • Low Inductivity • Low Temperature Coefficient SPECIFICATIONS ELECTRICAL FHR 2/4-120120 FHR 2/4-128120 FHR 2/4-7580 FHR 2/4-8080 FHR 2/4-7050 FHR 2/4-7750 FHR 2/4-10050 FHR 2/4-6520 FHR 2/4-10020 rated current resistor value (at 50 mV nominal output) 1000 A 50 µΩ 750 A 67 µΩ 600 A 83 µΩ 500 A 100 µΩ 300 A 167 µΩ 250 A 200 µΩ 150 A 333 µΩ 100 A 500 µΩ 50 A 1000 µΩ (other rated currents and nominal outputs upon request possible) Tolerances : 1%, 2%, 5% (other Tolerances upon request) Temperature Coefficient : ±15 ppm/K (20°C ... 60°C, only 4-pin type) Thermal EMF : < 1 µV/K : -40°C ... 130°C : : Metalplate CuNiMn (DIN 17471) Cu, upon request nickelized 2-pin, 4-pin Pmax 50 W 38 W 30 W 25 W 15 W 13 W 8W 5W 3W ENVIRONMENTAL Operating Temperature Range MECHANICAL Resistor Material Connector Material Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail [email protected] web www.willow.co.uk FHR 2/4-6520 ... 120120 TEMPERATURE COEFFICIENT 2000 + 15 ppm/K 1000 dR/R (ppm ) 0 -1000 - 15 ppm/K -2000 -3000 Limit 2 (3σ) -4000 -5000 Nom inal dR/R -6000 -7000 -40 Limit 1 (3σ) -20 0 20 40 60 80 100 120 140 Tem perature (°C) Pow er (% from nom inal pow er) DERATING CURVE 100 0,5% 80 0,2% 60 0,1% 40 20 0 25 40 55 70 85 100 115 130 Heatsink - Tem perature (°C) CONSTRUCTION Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail [email protected] web www.willow.co.uk FHR 2/4-6520 ... 120120 DIMENSIONS FHR2/4 - 120120 FHR2/4 - 128120 FHR2/4 - 7580 FHR2/4 - 8080 FHR2/4 - 7050 FHR2/4 - 7750 FHR2/4 - 6520 FHR2/4 - 10050 FHR2/4 - 10020 HOW TO ORDER FHR 2-120120 0R00005 5% FHR 4-8080 0R0001 2% FHR 4-6520 0R0005 2% Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail [email protected] web www.willow.co.uk