Thick Film Semi-Precision Metal Glaze™ Power Resistors IRC Wire and Film Technologies Division GS-3 Series • Power rating of 3W @25°C; 2W @ 70°C • Resistance range from 1Ω to 3MΩ • Standard tolerances of ±1%, ±2%, ±5% • Superior surge performance • Effective as carbon composition replacement Specifications Part Number Power rating (Watts) Resistance Range (Ohms) Tolerance (±%) TCR (±ppm/°C) Maximum Operating Voltage (Volts) Dielectric Withstanding Voltage (Volts) GS-3 2.0 (@ 70°C) 1.0 - 3M 1, 2, 5 50 (>10Ω) 1000 1000 3.0 (@ 25°C) 100, 200 (≤ 10Ω) Environmental Performance Maximum ∆R Limits Test MIL-R-26 MIL-R-10509-D MIL-R-22684 GS-3 TCR ±ppm/°C 30 100 200 100/50 Load life %∆R 0.5 1.0 2.0 2.0 Short term overload %∆R 0.20 0.50 0.50 0.20 Moisture %∆R 0.20 1.50 1.50 0.40 Temperature cycling %∆R 0.20 0.50 - 0.20 Solder effect %∆R - 0.50 0.50 0.20 Termination strength %∆R 0.10 0.20 0.50 0.10 Shock %∆R 0.10 0.50 0.50 0.10 Vibration %∆R 0.10 0.50 0.50 0.10 Operating temperature -55°C to +175°C General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of printing. © IRC Wire and Film Technologies Division • 736 Greenway Road Boone, North Carolina 28607-1860 Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com A subsidiary of TT electronics plc GS-3 Series Issue January 2007 IRC Wire and Film Technologies Division Performance Curves Derating Chart Hot Spot Temperature +25°C Ambient 100 200 175 150 Degrees (ºC) Percent Rated Power 80 60 40 125 100 75 50 20 25 0 0 75 125 0 175 0 25 Ambient Temperature (°C) 50 75 100 Percent 25°C Power Rating Dimensions (Inches and mm) H L d W TYPE L W H Ød GS-3 0.515 ±0.010 0.225 ±0.008 1.50 ±0.125 0.032 ±0.002 (13.1 ±0.3) (5.7 ±0.2) (38.1 ±3.2) (0.8128 ±0.05) Ordering Information Sample Part No. GS-3 100 1000 J IRC Style GS = (Fixed Film Resistor High Stability) Power Rating 3 = 3W@ 25ºC / 2W @ 70ºC TCR Characteristics 50 = ±50 ppm/°C 100= ±100 ppm/°C 200 = ±200 ppm/°C (available on values greater than 10 ohms) Resistance First three digits represent significant figures; fourth digit is number of zeros. Tolerance F = ±1%, G = ±2%, J = ±5% RoHS Compliance = Sn/Pb terminations LF = RoHS-compliant product General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of printing. © IRC Wire and Film Technologies Division • 736 Greenway Road Boone, North Carolina 28607-1860 Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com A subsidiary of TT electronics plc GS-3 Series Issue January 2007