USR UNR 2-0710 Precision Foil Resistors • • • • • Resistances from 1Ohm to 300kOhms Power Rating to 0.6Watt Resistance Tolerances to ±0.005% TCR to ±1ppm/K Load Stability to 0.01% SPECIFICATIONS Type Resistance Range Power rating (70°C) Tolerances from 1.0 Ohms from 5.0 Ohms from 12.0 Ohms from 25.0 Ohms from 50.0 Ohms USR 2-0710 UNR 2-0710 1.0 Ohms to 4.99 kOhms 5.0 kOhms to 300 kOhms 1.0 Ohms to 5.0 kOhms 0.4W (0.6W upon request) 0.6W 0.4W 0.1% / 0.25% / 0.5% / 1% 0.05% / 0.1% / 0.25% / 0.5% / 1% 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1% 0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1% 0.005% / 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) and ±1ppm/K (-55 to 125°C) Insolation Resistance > 10GOhm Thermal EMF < 0.1µV/K Operating Temperature Range -55 to 155°C Resistor Material NiCr-Foil Substrate 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 - Contact Grid Type - Tolerance - TCR Example: UNR 2-0710 3.7Ohms J 0.5% 1ppm Grid (E) 3.81mm (0.15inches) = D Grid (E) 5.08mm (0.2inches) = J Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 06/13 USR UNR 2-0710 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) 0.079 A 30.00 2.0 1.18 B 7.00 0.1 0.28 0.004 C 9.50 0.2 0.37 0.008 D 2.00 0.1 0.08 0.004 E1 3.81 0.1 0.15 0.004 E2 5.08 0.1 0.20 0.004 F 3.00 0.1 0.12 0.004 G Ø0.60 0.1 Ø0.02 0.004 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 06/13