USR UNR 2-1410 Precision Foil Resistors • • • • • Resistances from 1Ohm to 300kOhms Power Rating to 0.8Watt Resistance Tolerances to ±0.01% TCR to ±1ppm/K Load Stability to 0.01% SPECIFICATIONS Type Resistance Range USR 2-1410 UNR 2-1410 1.0 Ohms to 300 kOhms 1.0 Ohms to 10 kOhms Power rating (70°C) Tolerances from 1.0 Ohms from 5.0 Ohms from 25.0 Ohms 0.8W 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% Stability 0.01% Shelf Life Stability 25ppm / ∆R after 1 year 50ppm / ∆R after 3 year Temperature Coefficient max. ±5ppm/K (-55 to 155°C) typ. ±3ppm/K (-55 to 125°C) upon request ±1ppm/K (0 to 60°C) Insolation Resistance > 10GOhm Thermal EMF < 0.1µV/K Operating Temperature Range -55 to 155°C Resistor Material Substrate NiCr-Foil Al2O3 Housing AlN PBTP / Epoxy Connector Material Cu tinned Terminals 2 Notes Specially designed for applications with fast changing electrical load Ordering Information Part Description: Part Type - Resistance - Tolerance - TCR Example: UNR 2-1410 3.7Ohms 0.5% 3ppm Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 06/13 USR UNR 2-1410 Precision Foil Resistors SPECIFICATIONS (continued) Temperature Coefficient 800 ∆R/R (ppm) 600 +5ppm/K -5ppm/K 400 200 Nominal Spread ±2.3ppm/K 0 -200 Nominal ∆R/R -400 Nominal Spread ±2.3ppm/K -600 -800 -50 0 -25 25 50 75 100 125 Temperature (°C) Power (% from nominal power) Derating 120 100 80 60 40 20 0 50 70 85 100 115 130 145 155 Ambient Temperature (°C) Dimensions Dimension mm tol. (±mm) inches tol. (±inches) A 16.00 1.0 0.63 0.039 B 14.00 0.2 0.55 0.008 C 10.00 0.2 0.39 0.008 D 2.00 0.1 0.08 0.004 E 7.62 0.1 0.30 0.004 F 0.50 0.1 0.02 0.004 G 3.00 0.1 0.12 0.004 H 0.25 0.1 0.01 0.004 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 06/13