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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.
UNS4-T220 Datasheet
