(626) 284-9901
[email protected]
Riedon.com
  • Home
  • Cross Reference
  • Technical Information
  • How To Buy
  • FAQs
  • Blog
  • Contact Us
(626) 284-9901 mobile menu link
  • Home
  • Cross Reference
  • Technical Information
  • How To Buy
  • FAQs
  • Contact Us
  • About Us
  • Custom Resistor
Our production facilities will be shut down Friday, December 24th, 2022, returning Monday, January 3rd, 2023.

Precision Shunt Resistors

FHR 2-3025 3818

FHR 4-3825 3825H 4618 Series

Precision Shunt Resistors

pdf
FHR4-3825.jpg
  • Resistance from 0.001 Ohm to 100 Ohms
  • Power Rating to 50 Watts
  • Resistance Tolerances to ±0.1%
  • TCR to ±10ppm/K
  • Very Low Inductance
Type FHR 2-3025
FHR 2-3818
FHR 4-3825
FHR 4-3825H
FHR 4-4618
Resistance Range 0.01 to 100 Ohms 0.001 to 100 Ohms
Power Rating
free air 70°C
for 3825H
with heatsink

3 W

40 W

3 W
5 W
50 W
Thermal Resistance Rthj-c 2.0 K/W 1.6 K/W
Tolerances
from 0R001
from 0R005
from 0R01
from 0R02




0.5% / 1% / 2% / 5%
0.25% / 0.5% / 1% / 2% / 5%


1% / 2% / 5%
0.5% / 1% / 2% / 5%
0.1% / 0.25% / 0.5% / 1% / 2% / 5%
0.1% / 0.25% / 0.5% / 1% / 2% / 5%
Stability 0.1% / 0.2% / 0.5%
(depends on stress)
Temperature Coefficient
Standard


Option 1
±15ppm/K (20 to 60°C)
R ≤ 0R2 TCR (see Table A)



±15ppm/K (20 to 60°C)
R ≤ 0R2 TCR (see Table A)

±10ppm/K (20 to 60°C)
(only contact A and K)
Max. Current 50A - Contact K
150 A - Contact A
200 A - Contact F
Voltage Proof 500 VDC
Thermal EMF < 0.1µV/K
Operating Temperature Range -40 to 130°C
Resistor Material CuNiMn-Foil
Substrate anodized aluminum
Housing Epoxy
Connector Material Cu tinned
Terminals 2 4
Max. torque 1 Nm

pdf See PDF Datasheet for Full Specifications

Custom Resistors
Request Samples

Featured
Products



Download The Current Sense
& Circuit Protection
Brochure Here

Riedon
Brochure





Download Our Brochure

Technical
Calculator


Use this technical resource to learn about Ohm's Law, design RTDs, Voltage Dividers, Wheatstone Bridges and more.

Technical Calculator

Riedon
Guide to Resistors

[email protected]

Riedon
News

  • Purdue house runs entirely on DC power: efficient nano-grid can be powered by solar panels, batteries or local utilities
  • Your Essential Guide on How to Use DC Current Shunts
  • Do You Need a Shunt Resistor? What You Need to Know
  • What is a Pulse Resistor and How to Choose One
  • Current Sense Resistors - How They Work & Improve Efficiency



Copyright © 2023 Riedon

Follow Riedon on Twitter
Follow Riedon on YouTube
Follow Riedon on Facebook
Cross Reference |  Technical Information |   How To Buy |   Contact Us |   About Us |  Custom Designed Resistors |