SF-2

SF-2 Surface Mount / Precision Metal Film Resistors • • • • • Resistances from 50 to 3MOhms Tolerance to ±0.1% TCR’s to ± 5ppm/K Very Low Inductance Excellent Long Term Stability SPECIFICATIONS Specification Resistance Range Power Rating Temperature Range Dielectric Strength Insulation Resistance Voltage Coefficient Value 50W to 3MW 1W ( TAmbient = 70°C ) -25°C to +125°C ( TC >= 25ppm/K ) -10°C to +85°C ( TC < 25ppm/K ) 750 VAC >1000 MOhms / Dry 0.5 ppm/V ( Max ) ( ±ppm/K ) TCR 5 10 15 25 50 Resistances Available at these Tolerances ±0.05% 50W - 250KW 50W - 510KW 50W - 510KW 50W - 510KW 50W - 510KW ±0.10% 10W - 250KW 10W - 510KW 10W - 1MW 10W - 1MW 5W - 1MW ±0.25% 10W - 250KW 10W - 510KW 10W - 1.5MW 10W - 1.5MW 3W - 1.5MW ±0.50% 10W - 250KW 10W - 510KW 10W - 1.5MW 5W - 2MW 2W - 2MW ±1% 10W - 1.5MW 5W - 2MW 1W - 3MW Power Derating Curve 120 100 Power ( % ) 80 TC 2 >= TC < 60 40 20 0 5p pm 25ppm 0 25 50 75 100 125 150 175 Ambient Temperature (°C) Ordering Information Part Number - Resistance - Tolerance - TCR Example: SF-2 200 kOhm 0.1% 5ppm Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 87 rev. 03/2006A