FHR 4-3825 0R001 A 1% Q Powertron

FHR 4-3825 3825H 4618 FEATURES Resistances from 0.001Ohm to 100Ohms Power Rating to 50Watt Resistance Tolerances to 0.1% TCR to 10ppm/K Very Low Inductance Load Stability to 0.1% TABLE 1SPECIFICATIONS FHR 4-3825 TYPE FHR 4-3825H FHR 4-4618 Resistance Range 0.001 to 100 Ohms Free air 70C 3W / 5W for 3825H Power Rating With heatsink 50W Tolerances from 0R001 0.1% / 0.25% / 0.5% / 1% / 2% / 5% Thermal Resistance 1.6 K/W 0.1% / 0.2% / 0.5% Stability (1000h) (depends on stress) Temperature Coefficient Standard (Q) 25ppm/K (20 to 60C) Option (R) Extended Temperature Range 50ppm/K (-40 to 130C) other specifications upon request Voltage Proof 500 VDC Maximum Current 150 A / 200 A for contact F Thermal EMF < 1V/K Operating Temperature Range -40 to 130 C Resistor Material CuNiMn-Foil Substrate Anodized aluminium Housing Epoxy Connector Material Cu / tinned Terminals 4 Max. Torque 1 Nm ORDERING INFORMATION Part Number - Resistance - Contact - Tolerance - TCR FHR 4-4618 0R050 F 1% Q FHR 4-3825H 1R140 A 0.1% N Document No.: 64237 For technical questions, www.powertron.de Revision: 31-01-2015 contact powertron vpgsensors.com 1FHR 4-3825 3825H 4618 FIGURE 1TEMPERATURE COEFFICIENT 2000 0 Limit 2 -2000 -4000 Nominal R/R -6000 -8000 Limit 1 -10000 -40 -20 0 20 40 60 80 100 120 140 Temperature (C) FIGURE 2DERATING Power Rating Notes - The FHR Series Resistors must be attached to a suitable heat- sink. The maximum internal resistor temperature is 130C. 120 0.5% To specify an appropriate heatsink use the following formula : 100 0.2% 80 0.1% 60 R = T - ( P x R ) - T qH MAX qR A 40 P 20 0 Where: R = Thermal Resistance of Heatsink ( K/W ) qH 25 50 85 100 115 130 R = Thermal Resistance of Resistor ( K/W ) qR Temperature of the backplate (C) T = Maximum Temperature of Resistor MAX T = Ambient Temperature of Heatsink ( C ) A P = Power Through Resistor ( W ) FIGURE 3DIMENSIONS in mm (inches) Dimension A-contact K-contact A 0.2 (0.008) 24.00 (0.94) FHR 4-3825 / FHR 4-3825H B 0.3 (0.012) 38.00 (1.50) C 0.1 (0.004) 1.40 (0.06) D 0.1 (0.004) 4.00 (0.16) E 0.2 (0.008) 17.50 (0.69) F 0.1 (0.004) 1.5x45 (0.06x45) G 0.2 (0.008) 27.50 (1.08) H 0.2 (0.008) 17.50 (0.69) I 0.1 (0.004) 1.50 (0.06) 1.10 (0.04) J 0.1 (0.004) 3.00 (0.12) K 0.1 (0.004) 3.20 (0.13) L 0.1 (0.004) 2.00 (0.08) M 0.2 (0.008) Standard 6.00 (0.24) M 0.2 (0.008) Variant H 10.80 (0.43) N 0.4 (0.016) 30.40 (1.20) O 0.2 (0.008) 15.00 (0.59) R > 0R001 3.60 (0.14) 3.30 (0.13) P 0.3 (0.012) R 0R001 4.10 (0.16) ---- R > 0R001 2.80 (0.11) Q 0.3 (0.012) R 0R001 3.30 (0.13) R 0.2 (0.008) 19.00 (0.75) www.powertron.de For technical questions, Document No.: 64237 2 contact powertron vpgsensors.com Revision: 31-01-2015 Power ( % from nominal power) R/R (ppm)