FHR 4-8065 4-80110 4-80216 4-80320 4-80370 • • • • • SPECIFICATIONS ELECTRICAL Power Rating from to 2500 W High Stability Low TCR Low Inductance Low Noise FHR 4-8065 / 80110 / 80216 / 80320 / 80370 Resistance Range : R001 ...500R (FHR 4-8065 up to 400R) Power Rating : 350 W / 600 W / 1200 W / 2000 W / 2500 W with heatsink 24 W / 32 W / 60 W / 80 W / 90 W without heatsink (25°C) Thermal Resistance Rthj-c : 0.16 / 0.09 / 0.04 / 0.026 / 0.022 K/W Tolerances from R001 from R005 from R010 from R020 : : : : : 0.5%, 1%, 2%, 5% 0.5%, 1%, 2%, 5% 0.25%, 0.5%, 1%, 2%, 5% 0.1%, 0.25%, 0.5%, 1%, 2%, 5% Stability : 0.1%, 0.2%, 0.5% (depending on stress) Temperature Coefficient : ±15 ppm/K (20...60)°C from R < R02 ±20 ppm/K (20...60)°C from R < R01 ±30 ppm/K (20...60)°C for 2-pin type TCR-Shift depends on resistor value (see next page) Inductivity : Capacity against housing : Insulation Strenght : Thermal EMF : Max. current : < 50 nH 500 pF / 850 pF / 1.7 nF / 2.5 nF / 2.9 nF 1.5 kVDC (higher upon request) < 1 µV/K Standard cable 60 A (Special contact up to 250 A) ENVIRONMENTAL Operating Temperature Range MECHANICAL Resistor Material Substrate Housing Connection : : : : : -40°C ... 130°C Metalfoil CuNiMn (DIN 17471) anodized Aluminium anodized Aluminium Cu-Cable, 4 mm2, 500 mm lenght (other upon request, also AWG possible) 4-pin (2-pin upon request) 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 4-8065 4-80110 4-80216 4-80320 4-80370 TEMPERATURE COEFFICIENT TCR-Shift for 2-pin types (FHR2-80xxx) 2000 + 15 ppm/K 250 1000 -1000 - 15 ppm/K -2000 -3000 Limit 2 (3σ) -4000 -5000 Nom inal dR/R TCR - Shift (ppm/K) 200 150 100 50 -6000 Limit 1 (3σ) 120 0 140 Tem perature (°C) Resistance Value (mOhm) DERATING CURVE 120 100 0,5% 80 0,2% % 0,1% 60 40 20 0 25 50 DIMENSIONS FHR 4-8065 FHR 4-80110 FHR 4-80216 FHR 4-80320 FHR 4-80370 200 100 100 80 60 50 40 20 20 5 0 10 -20 2 -7000 -40 Power ( % from nominal power) dR/R (ppm ) 0 75 85 100 115 130 Tem perature of the backplate (°C) A 65 110 216 320 370 HOW TO ORDER FHR 4-80110 0R1 D 0.25% L1 6,0 6,0 6,0 6,0 6,0 L2 59,0 104,0 108,0 108,5 125,5 L3 210,0 211,5 244,5 L4 314,0 364,0 FHR 4-80216 1R0 D 1% 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