SF-2 Surface Mount / Precision Metal Film Resistors • • • • • Resistances from 50 to 3MOhms Tolerance to ±0.05% TCR’s to ± 5ppm/°C Very Low Inductance Excellent Long Term Stability SPECIFICATIONS Specification Value Resistance Range 50W to 3MW Power Rating 1W ( TAmbient = 70°C ) Temperature Range -25°C to +125°C ( TC ≥ 25ppm/°C ) -10°C to +85°C ( TC < 25ppm/°C ) Dielectric Strength 750 VAC Insulation Resistance >1000 MOhms / Dry Voltage Coefficient 0.5 ppm/V ( Max ) Resistances Available at these Tolerances TCR ( ±ppm/K ) ±0.05% ±0.10% ±0.25% ±0.50% ±1% 5 50W - 250KW 10W - 250KW 10W - 250KW 10W - 250KW - 10 50W - 510KW 10W - 510KW 10W - 510KW 10W - 510KW - 15 50W - 510KW 10W - 1MW 10W - 1.5MW 10W - 1.5MW 10W - 1.5MW 25 50W - 510KW 10W - 1MW 10W - 1.5MW 5W - 2MW 5W - 2MW 50 50W - 510KW 5W - 1MW 3W - 1.5MW 2W - 2MW 1W - 3MW Power Derating Curve 120 TC 80 2 >= 60 25ppm pm 5p TC < Power ( % ) 100 40 20 0 0 25 50 75 100 125 150 175 Ambient Temperature (°C) Ordering Information Part Description: Part Type - Resistance - Tolerance - TCR Example: SF-2 200 kOhm 0.1% 5ppm Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 87 07/13