USR4-1414

USR 4-1414 Precision Shunt Resistors • • • • • 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 Resistance Range Power rating free air 70°C with heatsink Thermal Resistance Rthj-c Tolerances from 0.5 Ohms from 1.0 Ohms Stability Temperature Coefficient USR 4-1414 0.5 to 100 Ohms 0.8 W 25 W < 4.2 K/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 (-55 to 155°C) typ. ±3ppm/K (-55 to 125°C) upon request ±1ppm/K (0 to 60°C) 1.5 kVDC < 0.1µV/K -55 to 155°C NiCr-Foil Al2O3 upon request: AlN Plastic / Epoxy Cu tinned 4 Voltage Proof Thermal EMF Operating Temperature Range Resistor Material Substrate Housing Connector Material Terminals Ordering Information Part Number - Resistance - Tolerance - TCR USR 4-1414 0.5Ohms 0.5% 1ppm Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 118 rev. 03/2006A USR 4-1414 Precision Shunt Resistors 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 Nominal Spread ±2.3ppm/K Nominal Spread ±2.3ppm/K Temperature (°C) without Heatsink 120 Derating Power (% from nominal power) 120 100 80 60 40 20 0 25 50 with Heatsink Power (% from nominal power) 100 80 60 40 20 0 50 70 85 100 115 130 145 155 Ambient Temperature (°C) Temperature of the backplate(°C) 85 100 115 130 145 155 Dimensions Dimension A B C D E F G mm 94.00 14.00 4.50 Ø0.80 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 Ø0.03 0.25 0.06 0.55 tol. (±inches) 0.020 0.008 0.004 0.004 0.008 0.008 0.008 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 119 rev. 03/2006A