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| USR 4-1414 PrecisionShuntResistors * * * * * Resistances from 0.5Ohm to 100Ohms Power Rating to 25Watt Resistance Tolerances to 0.01% TCR to 1ppm/K Load Stability to 0.01% SPECIFICATIONS Type ResistanceRange Powerrating freeair70C withheatsink ThermalResistanceRthj-c Tolerances from0.5Ohms from1.0Ohms Stability Temperature Coefficient USR 4-1414 0.5to100Ohms 0.8W 25W <4.2K/W 0.1%/0.25%/0.5%/1% 0.01%/0.02%/0.05%/0.1%/0.25%/0.5%/1% 0.01% max.5ppm/K(-55to155C) typ.3ppm/K(-55to125C) uponrequest1ppm/K(0to60C) 1.5kVDC <0.1V/K -55to155C NiCr-Foil Al2O3 uponrequest:AlN Plastic/Epoxy Cutinned 4 VoltageProof ThermalEMF OperatingTemperatureRange ResistorMaterial Substrate Housing ConnectorMaterial Terminals Ordering Information PartNumber-Resistance-Tolerance-TCR USR4-14140.5Ohms0.5%1ppm Riedon Inc. 300CypressAvenue AlhambraCA91801 www.riedon.com (626)284-9901 (626)284-1704 Page118 rev.03/2006A USR4-1414 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) withoutHeatsink 120 Derating Power(%from nominalpower) 120 100 80 60 40 20 0 25 50 withHeatsink Power(%from nominalpower) 100 80 60 40 20 0 50 70 85 100 115 130 145 155 AmbientTemperature(C) Temperatureofthebackplate(C) 85 100 115 130 145 155 Dimensions Dimension A B C D E F G mm 94.00 14.00 4.50 O0.80 6.30 1.50 14.00 tol. (mm) 0.5 0.2 0.1 0.1 0.2 0.2 0.2 inches 3.70 0.55 0.18 O0.03 0.25 0.06 0.55 tol. (inches) 0.020 0.008 0.004 0.004 0.008 0.008 0.008 Riedon Inc. 300CypressAvenue AlhambraCA91801 www.riedon.com (626)284-9901 (626)284-1704 Page119 rev.03/2006A |
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