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USR4-T2200R5D Datasheet(PDF) 1 Page - Willow Technologies Ltd |
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USR4-T2200R5D Datasheet(HTML) 1 Page - Willow Technologies Ltd |
1 / 2 page -600 -400 -200 0 200 400 600 Tem perature (°C) +5 ppm/K -5 ppm/K +2,2 ppm/K -1,8 ppm/K -50 -25 025 50 75 100 125 No minal-dR/R No minal-Spread +/-2,3 ppm/K No minal-Spread +/-2,3 ppm/K USR UNR 4-T220 4-T220B 4-T221 USS UNS 4-T220 ••••• Highest Stability ••••• Near Temperature Independent ••••• Lowest Tolerances ••••• Low Capacitance and Inductance ••••• High Power ••••• Available also 2-pin version SPECIFICATIONS ELEKTRICAL USR 4-T220 UNR 4-T220 note1) Resistance range : 0R2...80R 0R2...80R Nominal power : 1.5 W (70°C) without heatsink 10 W* 15 W* * with heatsink Thermal Resistance Rthj-c : 10.8 K/W 6.8 K/W Tolerances : from 0R5 : 0.1%, 0.25%, 0.5%, 1% from 10R : 0.05%, 0.1%, 0.25%, 0.5%, 1% from 50R : 0.01%, 0.02%, 0.05%, 0.1%, 0.25%, 0.5%, 1% Stability : 0.01% Temperature coefficient : max. ±5 ppm/K (-55...155)°C typ. ±3 ppm/K (-55...125)°C upon request ±1 ppm/K (0...60)°C Voltage Proof : 1 kVDC Thermal EMF : < 1 µV/K ENVIRONMENTAL Operating Temperature Range : -55°C...155°C MECHANICAL Resistor Material : NiCr-Foil Substrate : Al 2O3 AlN Housing : Epoxy + heatsink Cu nickel plated Connector Material : Cu, tinned, 4-pin Max. torque backplate : 1.0 Nm note1): Specially designed for applications with fast changing electrical load. TEMPERATURE COEFFICIENT Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail sales@willow.co.uk web www.willow.co.uk |
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