Powertron FHR 4-2321 Series

  • Powertron

Product Features

  • Precision power shunt resistor
  • 4-terminal through-hole design
  • Resistance range from 0.001Ω to 50Ω
  • Tolerance from ±0.1%
  • TCR of 15 ppm/°C or 25ppm/°C
  • Power rating 40W on a suitable heat sink
  • Temperature range from -40°C to +130°C


The FHR 4-2321 4-terminal precision power shunt resistor series from Powertron offers a through-hole connection technology. Designed to be mounted on a suitable heat sink with a power rating of 40W and 3W in free air at 70°C, resistance range from 0.001Ω to 50Ω. The FHR 4-2321 series from Powertron offers a tolerance range from 0.1% to 5% and has a TCR of ±15 ppm/°C (depending on the resistance value) or ±25 ppm/°C (standard).

  • Precision power shunt resistor
  • 4-terminal through-hole design
  • Resistance values 0.001Ω to 50Ω
  • Tolerance options of ±0.1%, ±0.25%, ±0.5%, ±1%, ±2% and ±5% (depending the resistance value)
  • TCR standard (Q) ±25 ppm/°C (+20°C to +60°C) **
  • TCR Option 1 (P) ±15 ppm/°C (+20°C to +60°C) upon request for selected values
  • Power rating of 40W on a suitable heat sink
  • Power rating of 3W in 70°C free air
  • Temperature range from -40°C to +130°C
  • Maximum current of 150A
  • Thermal resistance 2°C/W
  • Inductance of <10nH
  • Stability (1000h) of 0.1%, 0.2% or 0.5% (depends on stress)
  • Voltage proof 500VDC


Typical applications for the FHR 4-2321 precision power shunt resistor series include:

  • Frequency converters
  • Power modules
  • Switch power supplies

Powertron FHR 4-2321 Specification Table

Resistance value *0.001Ω to 50Ω
Tolerancefrom 0.001Ω ±0.5% / ±1% / ±2% / ±5%
from 0.01Ω ±0.1% / ±0.25% / ±0.5% / ±1% / ±2% / ±5%
TCR **±15 ppm/°C (20-60°C) (P) (depending on resistance value)
±25 ppm/°C (20-60°C) (Q)
Temperature range-40°C to +130°C
Power rating3W (free air) / 40W (on a suitable heat sink)
Thermal resistance2.0 K/W)
Stability (1000h)0.1% / 0.2% / 0.5% (depends on stress)
Voltage proof500 VDC
Maximum current150A
Thermal EMF<0.1 µV/K

* Please contact us for available parts or see the ordering information tab
** Other specifications are available upon request

Powertron GmbH is a leading manufacturer of precision and higher power resistors in various package sizes, who are part of VPG Foil Resistors product group. Founded in 1990, they produce low-resistance and high end resistive solutions utilising their thick film technology for a variety of applications such as the ones above. With Powertron resistors, designers can significantly reduce circuit errors and greatly improve overall circuit performance by taking advantage of their technologies and customer-oriented products, designed to satisfy challenging technical requirements. Please visit www.powertron.de for more information.

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Weight 0.00000 kg
Dimensions 20.25 x 4.50 x 22.30mm
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Powertron FHR 4-2321 Series Resources

Product Datasheet

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Powertron FHR 4_2321 Precision Power Shunt Resistor image

Powertron FHR 4-2321 Series