PF2200 Series TO-220 Power Thin Film Resistors • • • • • • • • TO-220 Housing Rated Power to 50 Watts Resistances from 0.02 to 51K Ohms High Stability Film Resistance Elements Resistance Tolerance to ±0.1% TCR to ±5ppm/°C Low Inductance ( <10nH ) Isolated Mounting Tab SPECIFICATIONS Power Rating Resistance Range3 Tolerances Temperature Coefficients 51KW ±1% ( R ≥0.1W ) ±5% ±50ppm/°C ( R≥10W ) ±100ppm/°C ( 0.1W ≤ R < 10W ) ±250ppm/°C ( R < 0.1W ) 0.02W 51KW ±1% ( R ≥0.1W ) ±5% ±50ppm/°C ( R≥10W ) ±100ppm/°C ( 0.1W ≤ R < 10W ) ±250ppm/°C ( R < 0.1W ) 0.02W 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 1W 51KW ±0.1% ±5ppm/°C ( R ≥ 5W ) ±25ppm/°C ( R< 5W ) Heatsink1 Free Air2 Thermal Resistance PF2205 50W 1W 2.3°C/W 0.02W PF2203 35W 1W 3.3°C/W 20W 1W Type PF2202 PF2201 Min Max 5.9°C/W 10W 1W 10W 0.5W 3.3°C/W 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 Description: Part Type - Resistance - Tolerance - TCR Example: PF2203 0.5 Ohm 1% 100ppm Riedon Inc. 07/13 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 PF2200 Series TO-220 Power Thin Film Resistors SPECIFICATIONS (continued) Specification Value Maximum Current 25A Temperature Range -55°C to +155°C : PF2202, PF2203, PF2205 -55°C to +120°C : PF2201 Dielectric Strength 2000 VAC P * R ( 500V MAX ) Max. Operating Voltage Insulation Resistance >1000 Meg-Ohm Inductance <10nH ( At the Standoff ) 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 Thin Film Resistors must be attached to a suitable heatsink. Without a heatsink the maximum power rating is 1W ( 1/2W for the PF2201 ). The maximum internal resistor temperature is 155°C ( 120°C for the PF2201 ). Power ( % ) 100 80 Al lO 60 PF 22 40 IEC60068-2-6 th er To specify an appropriate heatsink use the following formula : s 01 RHH = 20 0 -25 0 25 50 75 100 125 Backplate Temperature (°C) 150 175 TMAX - (P * RHR) - TA P Where:RqH = Thermal Resistance of Heatsink ( °C/W ) RqR = Thermal Resistance of Resistor ( °C/W ) TMAX = Maximum Temperature of Resistor ( °C ) TA = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) Mounting Notes The PF2200 Series Thin 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. 07/13 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704