UNS4-T220

USR UNR 4-T220 / T220B USS UNS 4-T220 Precision Shunt Resistors Resistances from 0.2Ohm to 80Ohms Power Rating to 15Watt 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 10.0 Ohms from 50.0 Ohms Stability Shelf Life Stability Temperature Coefficient 1.5W 10W 10.8 K/W 0.1% / 0.25% / 0.5% / 1% 0.05% / 0.1% / 0.25% / 0.5% / 1% 0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1% 0.01% 25ppm / ∆R after 1 year 50ppm / ∆R after 3 year max. ±5ppm/K (-55 to 155°C) typ. ±3ppm/K (-55 to 125°C) upon request ±1ppm/K (0 to 60°C) 1 kVDC < 0.1µV/K -55 to 155°C NiCr-Foil Al2O3 Epoxy + Cu heatsink nickel plated Cu tinned 4 1.0 Nm Specially designed for applications with fast changing electrical load AlN USR / USS 0.2 to 80 Ohms UNR /UNS 1.5W 15W 6.8 K/W Voltage Proof Thermal EMF Operating Temperature Range www.DataSheet4U.com Resistor Material Substrate Housing Connector Material Terminals Max. Torque Notes Ordering Information Part Number - Resistance - Contact - Tolerance - TCR UNR 2-T220B 5.7kOhms C 0.5% 3ppm Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 132 rev. 03/2006A USR UNR 4-T220 / T220B USS UNS 4-T220 Precision Shunt Resistors SPECIFICATIONS (continued) Temperature Coefficient 800 600 +5ppm/K -5ppm/K ∆R/R (ppm) 400 200 0 -200 -4...