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| FPR FNR 2-T227 4-T227 FoilPowerResistors * * * * * Resistances from 0.001Ohm to 100Ohms Power Rating to 80Watt Resistance Tolerances to 0.1% TCR to 15ppm/K Load Stability to 0.1% SPECIFICATIONS Type Terminals ResistanceRange PowerRating (withheatsink) ThermalResistanceRthj-c Tolerances Stability Temperature Coefficient FPR 2-T227 2 0.01to100Ohms 60W FPR 4-T227 4 (kelvinconnection) 0.001to100Ohms FNR 2-T227 2 0.01to100Ohms 80W FNR 4-T227 4 (kelvinconnection) 0.001to100Ohms 1.3K/W 0.1%/1%/2%/5% (othersuponrequest) 0.1%/0.2%/0.5% (dependsonstress) 1.0K/W 15ppm/K(20to60C) fromR<0.02Ohms20ppm/K(20to60C) FPR2-T227/FNR2-T227TKShiftdependsfrom resistancevalue(seegraphnextpage) 2.5kVDC <1V/K 50A (higheruponrequest) -40Cto130C MetalfoilCuNiMn(DIN17471) Al2O3 Epoxy Cu/tinnedornickelplated backplate:1.5Nm terminals:1.3Nm AlN VoltageProof ThermalEMF Max.Current OperatingTemperature ResistorMaterial Substrate Housing ConnectorMaterial Max.Torque Ordering Information PartNumber-Resistance-Tolerance FPR2-T2271.1Ohms1% Riedon Inc. 300CypressAvenue AlhambraCA91801 www.riedon.com (626)284-9901 (626)284-1704 Page43 rev.03/2006A FPRFNR2-T2274-T227 FoilPowerResistors SPECIFICATIONS (continued) Temperature Coefficient 4000 250 2000 +15ppm/K tableA 200 0 -15ppm/K Limit 2 (3) Nominal R/R Limit 1 (3) -2000 -4000 TCR-Shift(ppm/K) R/R (ppm) 150 100 -6000 50 -8000 -40 -20 0 20 40 60 80 100 120 140 0 2 Temperature(C) ResistanceValue(mOhm) 5 10 20 50 100 200 DeratingandStability PowerRatingNotes- 120 100 Power ( % from nominal power) 0.5% 0.2% 0.1% TheFPR/FNRSeriesFoilResistorsmustbeattachedtoasuitable heatsink. The maximum internal resistor temperature is 130Cfora0.5%stabilitypart. Tospecifyanappropriateheatsinkusethefollowingformula: 80 60 40 20 0 25 RH=TMAX-(PxRR)-TA P 50 85 100 115 130 Where: Tem perature of the backplate (C) RH=ThermalResistanceofHeatsink(K/W) RR=ThermalResistanceofResistor(K/W) TMAX=MaximumTemperatureofResistor TA=AmbientTemperatureofHeatsink(C) P=PowerThroughResistor(W) DimensionsandAttachmentVariations Dimension A B C D E F G H I J K L M N mm 26 38 12.7 4 30 15 4.1 10 8 4 2 0.8 M4 10 11.9 0.2 0.2 tol. (mm) 0.5 0.5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.1 inches 1.02 1.50 0.50 0.16 1.18 0.59 0.16 0.39 0.31 0.16 0.08 0.03 M4 0.39 0.47 0.008 0.008 tol. (inches) 0.020 0.020 0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.004 FPR/FNR2-T227 Riedon Inc. FPR/FNR4-T227 AlhambraCA91801 www.riedon.com O 300CypressAvenue (626)284-9901 (626)284-1704 Page44 rev.03/2006A |
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