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| UHN 2-3825D PrecisionShuntResistors * * * * * * * Resistances from 50Ohm Power Rating to 30Watt Resistance Tolerances to 1% TCR to 5ppm/K Load Stability to 0.01% Customized Resistance Values Twin Resistor Construction SPECIFICATIONS Type ResistanceRange Powerrating freeair70C withheatsink ThermalResistanceRthj-c Tolerances UHN 2-3825D 50Ohms(2x) Othervaluesuponrequest 3W 30W 3.5K/W 1% (0.1%differencebetweenthetworesistances) Othertolerancesuponrequest 0.01% max.5ppm/K(-55to155C) 500VDC 15A <0.1V/K -55to155C NiCr-Foil Al2O3 Epoxy+Al-heatsink Cutinned 3 1.0Nm Stability Temperature Coefficient VoltageProof max.Current ThermalEMF OperatingTemperatureRange ResistorMaterial Substrate Housing ConnectorMaterial Terminals Max.Torque Ordering Information PartNumber-Resistance-Tolerance UHN2-3825D50Ohms-50Ohms0.5% Riedon Inc. 300CypressAvenue AlhambraCA91801 www.riedon.com (626)284-9901 (626)284-1704 Page105 rev.03/2006A UHN 4-3825D PrecisionShuntResistors 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) Derating withoutHeatsink Power(%from nominalpower) 100 80 60 40 20 0 50 70 85 100 115 130 145 155 withHeatsink Power(%from nominalpower) 120 100 80 60 40 20 0 25 50 85 100 115 130 145 155 120 AmbientTemperature(C) Temperatureofthebackplate(C) Dimensions Dimension A B C D E F G H I J K L M N mm 49.00 38.00 24.00 4.00 34.00 17.50 1.5x45 O0.8 25.40 O3.2 2.00 5.50 15.00 3.00 tol. (mm) 2.0 0.3 0.2 0.1 0.3 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.2 inches 1.93 1.50 0.94 0.16 1.34 0.69 0.6x45 O0.031 1.00 O0.126 0.08 0.22 0.59 0.12 tol. (inches) 0.079 0.012 0.008 0.004 0.012 0.008 0.004 0.004 0.008 0.004 0.004 0.004 0.008 0.008 Riedon Inc. 300CypressAvenue AlhambraCA91801 www.riedon.com (626)284-9901 (626)284-1704 Page106 rev.03/2006A |
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