UHR 4-5020D Special Resistors • • • • • Resistances from 1Ohm to 40Ohms Power Rating to 8Watt Resistance Tolerances to ±0.1% TCR to ±5ppm/K Load Stability to 0.1% SPECIFICATIONS Type UHR 4-5020D Resistance Range 1.0 to 40 Ohms Other values upon request Power rating (70°C) 8W Pulse Energy 1 kJ / 1s Thermal Resistance Rthj-c Tolerances 10 K/W 0.1% Other tolerances upon request Stability 0.1% Temperature Coefficient ±5ppm/K (-55 to 155°C) Insolation Resistance 3 kVDC max. Current 3A Thermal EMF < 0.1µV/K Operating Temperature Range -55 to 155°C Resistor Material NiCr-Foil Substrate AlN Housing Al Connector Material Cu tinned Terminals 4 Ordering Information Part Number - Resistance - Tolerance UHR 4-5020D 10Ohms 0.1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 107 rev. 03/2006A UHR 4-5020D Special 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) Derating 120 Power (% from nominal power) 100 80 60 40 20 0 50 70 90 110 130 155 Ambient Temperature (°C) Dimensions Riedon Inc. 300 Cypress Avenue Dimension mm tol. (±mm) inches tol. (±inches) A 19.50 0.2 0.77 0.008 B 50.00 0.3 1.97 0.012 C 16.50 0.2 0.65 0.008 D 28.00 0.2 1.10 0.008 Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 108 rev. 03/2006A