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Product Collections 10 Series - Axial Wire Element Current Sense
axial wire element current sense

10 Series

Two and Four Terminal Axial

Ohmite’s 10 series current sense resistors are available in a standard two-terminal axial and a four-terminal Kelvin design. 1% tolerances are standard with a fixed measuring point. The element design is non-inductive below 0.25 ohms.

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Two Terminal Axial

Features
  • Ideal for current sensing applications
  • 1% Tolerance standard, others available
  • Fixed resistance measuring point "M"
  • Low inductance (non-inductive below 0.25Ω)
  • RoHS compliant product available; add "E" suffix part number to specify
Specifications
SeriesWattageOhms
1220.005 - 0.10
1330.005 - 0.20
1550.005 - 0.25
questions? contact us
Characteristics
TerminalsSolder-plated copper terminals or copper-clad steel depending on ohmic value. RoHS solder is 96% Sn, 3.5% Ag, 0.5% Cu
EncapsulationSilicone molding compound
DeratingLinearly from 100% @ +25°C to 0% at +275°C
Tolerance±1% standard; others available
Power RatingBased on 25°C free air rating
Overload5 times rated wattage for five seconds
Dielectric Withstanding Voltage100 VRMS for 3 and 5 watt; 500 VRMS for 2 watt
Insulation ResistanceNot less than 1000MΩ
Thermal EMFLess than ±2µV/°C
Temperature Range-55°C to 275°C

Additional Specification Tables

Four Terminal Axial

14FPR size has been discontinued February 2021

Ohmite’s Four-terminal Current-sense design is specifically designed for low-resistance applications requiring the highest accuracy and temperature stability. This four-terminal version of Ohmite’s 10 Series resistor is specially designed for use in a Kelvin configuration, in which a current is applied through two opposite terminals and sensing voltage is measured across the other two terminals.

The Kelvin configuration enables the resistance and temperature coefficient of the terminals to be effectively eliminated.  The four-terminal design also results in a lower temperature coefficient of resistance and lower self-heating drift with may be experienced on two-terminal resistors.  The requirement to connect to the terminals at precise test points is eliminated, allowing for tighter tolerancing on the end application. 

 

Features
  • Ideal for current sensing applications
  • 1% Tolerance standard, others available
  • Low inductance (non-inductive below 0.25Ω)
  • Tinned Copper Leads
  • RoHS Compliant
Specifications
SeriesWattageOhms
1330.005-0.1
144.50.005-0.1
1770.005-0.1
questions? contact us
Characteristics
TerminalsTinned Copper Leads
EncapsulationSilicone molding compound
DeratingLinearly from 100% @ +25°C to 0% at +200°C
Resistance Range0.005Ω - 0.100Ω standard
Standard Tolerance±1%; others available
Operating Temperature Range-55°C to +200°C
Temperature Coefficient of Resistance(0°C to 85°C)≥0.015Ω:±50 PPM/°C; <0.015Ω: 100 PPM/°C
Environmental PerformanceExceeds the requirements of MIL-PRF-49465
Power RatingBased on 25°C free air rating
Overload5 times rated wattage for five seconds
Max. Current22 amps
Dielectric Withstanding Voltage1500 VAC for 4.5 and 7 watt; 1000 VAC for 3 watt
Insulation ResistanceNot less than 1000 MΩ
Thermal EMFLess than ±2µV/°C
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