PF2200 Series In Stock at DIGI-KEY TO-220 Power Film Resistors • • • • • • • TO-220 Housing Rated Power to 50 Watts Resistances from 0.01 to 51K Ohms High Stability Film Resistance Elements Resistance Tolerance to ±1% Low Inductance ( <50nH ) Isolated Mounting Tab SPECIFICATIONS Type Power Rating Resistance Range3 Tolerances Temperature Coefficients 220W ±1% ( R ≥ 0.1W ) ±5% ±50ppm/°C ( R≥10W ) ±100ppm/°C ( 0.1W ≤ R < 10W ) ±250ppm/°C ( R < 0.1W ) 220W 51KW ±1%, ±5% ±50ppm/°C 3.3°C/W 0.01W 220W ±1% ( R ≥ 0.1W ) ±5% ±50ppm/°C ( R≥10W ) ±100ppm/°C ( 0.1W ≤ R < 10W ) ±250ppm/°C ( R < 0.1W ) 1W 3.3°C/W 220W 51KW ±1%, ±5% ±50ppm/°C 20W 1W 5.9°C/W 0.01W 220W ±1% ( R ≥ 0.1W ) ±5% ±50ppm/°C ( R≥10W ) ±100ppm/°C ( 0.1W ≤ R < 10W ) ±250ppm/°C ( R < 0.1W ) 10W 1W 5.9°C/W 220W 51KW ±1%, ±5% ±50ppm/°C Heatsink1 Free Air2 Thermal Resistance 50W 1W 2.3°C/W 0.01W 30W 1W 2.3°C/W 35W 1W 20W Min Max PF2205 PF2203 PF2202 Power rating based on 25°C Flange Temperature Power rating based on 25°C Ambient Temperature 3 Consult Factory for Higher or Lower Values 1 2 Ordering Information Part Number - Resistance - Tolerance - TCR Example: PF2203 0.5 Ohm 1% 100ppm Riedon Inc. 03/11 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 PF2200 Series TO-220 Power Film Resistors SPECIFICATIONS (continued) Specification Value Maximum Current 25A Temperature Range -55°C to +155°C : PF2202, PF2203, PF2205 Dielectric Strength 2000 VAC Max. Operating Voltage 500 V Insulation Resistance >1000 Meg-Ohm Environmental Performance DR Test Conditions Load Life ±1% + 0.05W 25°C, 90 min ON, 30 min OFF, 1000 hr Humidity Resistance ±1% + 0.05W 40°C, 90-95% RH, DC 0.1W, 1000 hr Temperature Cycle ±0.25% + 0.05W -55°C for 30 min, +155°C for 30 min, 1000 hr Solder Heat ±0.1% + 0.05W +350°C, 3s Vibration ±0.25% + 0.05W Power Rating Notes - Power Derating Curve 120 The PF2200 Series Foil Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 155°C. Power ( % ) 100 PF 22 80 05 ,P To specify an appropriate heatsink use the following formula : F2 60 20 3, PF 40 RqH = TMAX - ( P x RqR ) - TA P 22 02 20 0 IEC60068-2-6 -25 0 25 50 75 100 125 Ambient Temperature (°C) 150 175 Where: RqH = Thermal Resistance of Heatsink ( °C/W ) RqR = Thermal Resistance of Resistor ( °C/W ) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) Mounting Notes The PF2200 Series Film Resistors must be attached to a suitable heatsink. Mount resistor using thermal grease to a clean, flat surface. Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force. Torque mounting screw to 8 in-lbs ( 0.9 N-m ). Mounting tab is isolated from both pins. Riedon Inc. 03/11 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704