SC-2 Four Terminal / Surface Mount Wirewound Resistors • • • • • • • Resistances from 0.005 to 1kOhms Tolerance to ±0.005% TCR’s to ± 5ppm/K Superior Surge Handling Capability Up to 25A Current Reel Packaging Non-Inductive Windings are Available (Type SCN) SPECIFICATIONS Power Rating Watts @ 70°C Type SC-2 Maximum Current Resistance Range ( W ) Minimum Tolerance1 Minimum TC1 25A 0.005 to 1 1 to 10 10 to 100 >100 ±0.1% ±0.05% ±0.01% ±0.005% ±30ppm/K ±20ppm/K ±10ppm/K ±5ppm/K 2W 1 Specification Value Temperature Range -55°C to +275°C Dielectric Strength 1000 VAC Insulation Resistance >1000 MOhms / Dry Contact Factory for others. Environmental Performance DR Test Conditions Load Life ±1% 70°C / 90 min ON / 30 min OFF / 1000 hr Moisture Resistance ±1% 40°C / 90-95% RH / DC 0.1W / 1000 hr Temperature Cycling ±0.5% -40°C for 30 min / +125°C for 30 min / 1000 hr Short Term Overload ±0.5% 5X rated power for 5 seconds (MIL-STD 202) Power Derating Curve 120 Power ( % ) 100 80 60 40 20 0 0 50 100 150 200 250 300 350 Ambient Temperature (°C) Ordering Information For Non-Inductive Windings / insert the letter “N” ( i.e. SCN-2 ) Part Number - Resistance - Tolerance - TCR ( If not standard ) Example: SC-2 1 Ohm 0.1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 85 rev. 03/2006A