Powertron FHR 2-3818 Series

  • Powertron

Product Features

  • Precision power shunt resistor
  • Through-hole design with heat sink
  • Resistance range from 0.01Ω to 100Ω
  • Tolerance from ±0.25% or ±5%
  • TCR of <±50 ppm/°C
  • Power rating of 40W on a suitable heat sink
  • Temperature range from -40°C to +130°C


The FHR 2-3818 precision power shunt resistor series from Powertron offers a through-hole connection. Designed for easy heat sink mounting to provide a power rating of 40W, offers a resistance range from 0.01Ω to 100Ω with tolerance from 0.25% to 5% (depending on the resistance value required). The FHR 2-3818 series from Powertron has a TCR of ±50 ppm/°C (20°C to 60°C) with a very low inductance and stability from 0.1%.

  • Precision power shunt resistor
  • Through-hole
  • Resistance range from 0.01Ω to 100Ω
  • Tolerance options of ±0.25%, ±0.5%, ±1%, ±2% and ±5%
  • TCR of <±50 ppm/°C (+20°C to +60°C)
  • Temperature range from -40°C to +130°C
  • Power rating of 40W on a suitable heat sink
  • Power rating of 3W in free air
  • Maximum current of 150A
  • Designed for easy heat sink mounting
  • Low self-heating


Typical applications for the FHR 2-3818 precision power shunt resistor series include:

  • Current sources
  • Laboratory power supplies
  • Measurement equipment
  • Reference resistors in laboratories

Powertron FHR 2-3025 and 2-3818 Specification Table

Resistance value *0.01Ω to 100Ω
Tolerance±0.25% / ±0.5% / ±1% / ±2% / ±5%
TCR<±50 ppm/°C (20-60°C)
Temperature range-40°C to +130°C
Power rating3W (free air) / 30W (on a suitable heatsink)
Thermal resistance2.0 K/W
Stability (1000h)0.1% / 0.2% / 0.5% (depends on stress)
Voltage proof500 VDC
Maximum current150A
Thermal EMF0.1 µV/K

* Please visit the Ordering Info tab or contact us for further details


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 http://www.vishaypg.com/powertron for more information.

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Dimensions 17 x 5.5 x 38mm
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Powertron FHR 2-3818 Series Resources

Product Datasheet

  • Powertron
Powertron FHR 2-3818 Precision Power Shunt Resistor image

Powertron FHR 2-3818 Series

Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.