riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-990 1 (626) 284-1704 www.riedon.com 03/17 pf2200 series ? 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 50ppm/c ? low inductance ( <10nh ) ? isolated mounting tab specifications 1 power rating based on 25c flange temperature 2 power rating based on 25c ambient temperature 3 consult factory for higher or lower values type power rating heatsink 1 free air 2 thermal resistance resistance range 3 min max tolerances temperature coef? cients pf2205 50w 1w 2.3c/w 0.02 ? 51k ? 1% ( r 0.1 ? ) 5% 50ppm/c ( r 10 ? ) 100ppm/c ( 0.1 ? r < 10 ? ) 250ppm/c ( r < 0.1 ? ) pf2203 35w 1w 3.3c/w 0.01 ? 51k ? 1% ( r 0.1 ? ) 5% 50ppm/c ( r 10 ? ) 100ppm/c ( 0.1 ? r < 10 ? ) 250ppm/c ( r < 0.1 ? ) pf2202 20w 1w 5.9c/w 0.02 ? 51k ? 0.1%,0.25%,0.5%, (r10 ?) 1% ( r 0.1 ? ) 5% 50ppm/c ( r 10 ? ) 100ppm/c ( 0.1 ? r < 10 ? ) 250ppm/c ( r < 0.1 ? ) to-220 power thin film resistors part description: part type - resistance - tolerance - tcr example: pf2203 0.5 ohm 1% 100ppm ordering information speci? cation value temperature range -55c to +155c dielectric strength 2000 vac max. operating voltage * p r ( 500v max ) insulation resistance >1000 meg-ohm terminal finish tin plated copper inductance pf2202 / pf2203 8.38 nh, pf2205 9.65 nh
riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-990 1 (626) 284-1704 www.riedon.com 03/17 specifications (continued) environmental performance ? r test conditions load life 1% 25c, 90 min on, 30 min off, 1000 hr humidity resistance 1% 40c, 90-95% rh, dc 0.1w, 1000 hr temperature cycle 0.25% -55c for 30 min, +155c for 30 min, 5 cycles solder heat 0.1% +350 / -5c 3s vibration 0.25% iec60068-2-6 mounting notes - the pf2200 series thin film resistors must be attached to a suitable heatsink. mount resistor using thermal grease to a clean, ? at 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. pf2200 series to-220 power thin film resistors -25 0 25 50 75 100 125 150 175 0 20 40 60 80 100 120 power ( % ) backplate temperature (c) power derating curve pf2200 series power rating notes - 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 155c. to specify an appropriate heatsink use the following formula : where: r h = thermal resistance of heatsink ( c/w ) r r = thermal resistance of resistor ( c/w ) t max = maximum temperature of resistor ( c ) ( * ) r p t p r t h max r a = - - h h mm tol. (mm) inches tol. (inches) a 10.1 0.2 0.40 0.008 b 15.0 0.2 0.60 0.008 c 4.5 0.2 0.18 0.008 d 3.6 0.1 0.14 0.004 e 15.5 1.0 0.61 0.04 f 4.0 0.5 0.16 0.02 g 3.0 0.2 0.12 0.008 h 2.75 0.2 0.11 0.008 j 0.5 0.05 0.02 0.002 k 0.75 0.05 0.03 0.002 l 1.5 0.05 0.06 0.002 m 5.08 0.1 0.20 0.004 n 1.5 0.05 0.06 0.002 p 16.0 0.50 0.63 0.02
riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-990 1 (626) 284-1704 www.riedon.com 03/17 pulse energy durability pf2200 series to-220 power thin film resistors pulse peak power (w) 10n 100n 1u 10u 100u 1m 10m 100m 1 10 1000k 100 k 10 k 1 k h pf2202_10ohm-1% pulse energy durability 200w 20w tentative continuous-pulse power allowance at duty 0.01. load life test will be necessary in actual equipment, because curve will be changed by resistance, repetition, duty and operating temperature. dotted shows estimation. 100 10 pulse peak power (w) 10n 100n 1u 10u 100u 1m 10m 100m 1 10 1000k 100 k 10 k 1 k h pf2203_10ohm-1% pulse energy durability 400w 35w tentative continuous-pulse power allowance at duty 0.01. load life test will be necessary in actual equipment, because curve will be changed by resistance, repetition, duty and operating temperature. dotted shows estimation. 100 10 pulse peak power (w) 10n 100n 1u 10u 100u 1m 10m 100m 1 10 1000k 100 k 10 k 1 k h pf2205_10ohm-1% pulse energy durability 400w 50w tentative continuous-pulse power allowance at duty 0.01. load life test will be necessary in actual equipment, because curve will be changed by resistance, repetition, duty and operating temperature. dotted shows estimation. 100 10
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