SSR Series Surface Mount, Precision Metal Foil Resistor RIEDON Resistances from 5W to 80KW Resistance Tolerance to ±0.01% Low Temperature Coefficient to ±3ppm/°C Very Low Inductance Excellent Long Term Stability: ±0.02% max Riedon's surface mount, metal foil resistors are designed for demanding applications where emphasis is placed on minimum tolerances, lowest possible temperature coefficients, and exceptional long-term stability. SPECIFICATIONS Power Rating Resistance ( 70°C ) Range Type Dimensions in. (mm) W ±0.01 H ±0.01 F ±0.004 L ±0.01 0.25 5 to 33K 0.236 (6.0) 0.126 (3.2) 0.098 (2.5) 0.086 (2.2) 0.338 (8.6) 0.110 (2.8) SSR3 0.60 5 to 80K 0.287 (7.3) 0.169 (4.3) 0.110 (2.8) 0.094(2.4) 0.390 (9.9) 0.118 (3.0) Resistance Tolerances Available (±%) 5W to 10W 0.1% 10W to 20W 0.05, 0.1% 20W to 100W 0.02, 0.05, 0.1% > 100W 0.01, 0.02, 0.05, 0.1% Temperature Coefficients - < ± 3ppm/°C ( -55°C to 125°C ) Temperature Range - -65°C to 125°C 0.051 (1.3) L H F Temperature Coefficient A C pm/° +5p 600 - 5pp 400 W Solder Pad Dimensions 800 DR/R (ppm) B ±0.01 SSR1 1000 B m/°C 200 Nominal-Spread ±2.3ppm/°C 0 -200 0.106 (2.7) -1.8ppm/°C -400 Nominal-Spread ±2.3ppm/°C -600 Power Derating Curve -800 -40 -20 0 20 40 60 80 100 120 Temperature (°C) Ordering information: 140 Power Level % -1000 Part Number - Resistance - Tolerance - TCR Example: SSR3 - 470 Ohm - 0.01% - 1ppm Riedon Inc. REV 5/03 A ±0.004 300 Cypress Avenue Alhambra CA 91801 www.riedon.com 120 100 80 60 40 20 0 0 25 50 75 100 125 150 175 Ambient Temperature °C (626) 284-9901 Fax: (626) 284-1704