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KEY FEATURES:
  • Resistances from 0.01 Ohm to 51K Ohms
  • Low Stability to ± 1%
  • Resistance Tolerances to ± 1%
  • TCR to ± 50ppm/ºC
  • Power Rating to 35 Watt
  • Solder Reflow Secure at 260ºC / 20s
  • TO-263 Housing (D-Pak)
  • Isolated Back Plate
APPLICATIONS:
  • Power Inverters
  • Braking Systems
  • Lighting (LED)
  • Power Supplies

Resistor Power Thin Film
Product Range Summary:
POWER RATING 1
(with heatsink)
INDUCTANCE TEMPERATURE COEFFICIENT TOLERANCE RANGE 2 RESISTANCE RANGE (Ω) OPERATING TEMPERATURE RANGE
35 W
8.4 nH
  • ± 250 ppm/°C
  • ± 100 ppm/°C
  • ± 50 ppm/°C
  • 5%
  • 1% / 5%
  • 1%
  • 0.01 to 0.099 Ω
  • 0.1 to 9.9 Ω
  • 10 to 51 Ω
-55°C to +155°C

1 2W on simple solder pad
2 Consult factory for other tolerances not listed

Mechanical Characteristics
RHF Series Dimensions

 

Units Dimensions
A B C D E F G H J K L
mm10.3 10.1 15.3 5.08 1.5 0.75 2.2 4.5 0.5 2.5 5.0
tol.(± mm) 0.2 0.2 1.0 0.1 0.05 0.05 0.2 0.05 0.5 0.5 1.0
inches 0.405 0.400 4.54 0.200 0.060 0.030 0.087 0.177 0.020 0.10 0.20
Specifications
Specifications Values
Resistor MaterialThin Film
Terminals 2
Power Rating (with heatsink) 35 W ( 2W on Simple Solder Pad )
Inductance8.4 nH
Temperature Coefficient±250 ppm/°C±100 ppm/°C±50 ppm/°C
Tolerances (contact factory for other values)5%1% / 5%1%
Resistance Range0.01 to 0.099Ω0.1 to 9.9Ω10 to 51KΩ
Operating Temperature-55°C to 155°C
Thermal Resistance Rthj-c3.3 K/W
Max Operating Voltage500V
Voltage Proof2.0kV DC
Insulation ResistanceOver 1,000 MΩ
Load Life±1%90 min ON, 30 min OFF, 1000 hrs @ 25°C
Humidity±1%90-95% RH, 0.1W, 1000 hrs @ 40°C
Temperature Cycle±0.25%-55°C for 30 min, +155°C for 30 min, 5 cycles
Solder Heat±0.1%350°C ±5C for 3 seconds
Vibration±0.25%IEC60068-2-6

* Moisture Sensitivity Level: MSL-1

POWER RATING NOTES:
  • RHF Resistors must be attached to a suitable heatsink.
  • The maximum internal resistor temperature is 155°C.
  • Use the following formula to specify appropriate heatsink:
    Heatsink Equation of  RHF Resistor
Description of equations of  RHF Resistor
Power Derating Curve of  RHF Resistor
Pulse Peak power of  RHF Resistor
How to Order RHF Series Part Number Breakdown

Example P/N: RHFH4Q038K0FE is Resistor Power Thin, 35W, ±50ppm/ºC, 38.0KΩ, ±1.0%, embossed tape & reel
*For Tin/Lead coated leads, add “-Pb” to part numbers

This datasheet is subject to change without notice.