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| UHR 4-5020D SpecialResistors * * * * * Resistances from 1Ohm to 40Ohms Power Rating to 8Watt Resistance Tolerances to 0.1% TCR to 5ppm/K Load Stability to 0.1% SPECIFICATIONS Type ResistanceRange Powerrating(70C) PulseEnergy ThermalResistanceRthj-c Tolerances Stability Temperature Coefficient InsolationResistance max.Current ThermalEMF OperatingTemperatureRange ResistorMaterial Substrate Housing ConnectorMaterial Terminals 0.1% Othertolerancesuponrequest UHR 4-5020D 1.0to40Ohms Othervaluesuponrequest 8W 1kJ/1s 10K/W 0.1% 5ppm/K(-55to155C) 3kVDC 3A <0.1V/K -55to155C NiCr-Foil AlN Al Cutinned 4 Ordering Information PartNumber-Resistance-Tolerance UHR4-5020D10Ohms0.1% Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom. http://www.willow.co.uk + 44 (0) 1342 835234 + 44 (0) 1342 834306 info@willow.co.uk rev.03/2006A UHR 4-5020D SpecialResistors SPECIFICATIONS (continued) Temperature Coefficient 800 600 +5ppm/K -5ppm/K R/R (ppm) 400 200 0 -200 -400 -600 -800 -50 -25 0 25 50 75 100 125 Nominal R/R NominalSpread 2.3ppm/K NominalSpread 2.3ppm/K Temperature(C) 120 100 Derating Power (% from nominal power) 80 60 40 20 0 50 70 90 110 130 155 Ambient Temperature (C) Dimensions Dimension A B C D mm 19.50 50.00 16.50 28.00 tol. (mm) 0.2 0.3 0.2 0.2 inches 0.77 1.97 0.65 1.10 tol. (inches) 0.008 0.012 0.008 0.008 Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom. http://www.willow.co.uk + 44 (0) 1342 835234 + 44 (0) 1342 834306 info@willow.co.uk rev.03/2006A |
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