WOR Series Milliohm Shunt Resistor 2% Tolerance Low Inductance Current Sensing

Features

1. Milli ohm.
2. Low inductance.
3. High stability.
4. It is custom-made.

Product Positioning and Core Applications

The WOR Series Milli Ohm Wire Resistors (Shunt) are designed for electronic and electrical circuits requiring low resistance values and current sensing. The series combines milliohm resistance, low inductance, high stability, and customizable construction. Wire diameter/current, mounting pitch, and forming type can be selected according to application requirements. The available forming options include M Form, MS Form, and MG Form. The series references JIS C 5201-1 and provides a 2% resistance tolerance option for circuit designs with defined low-resistance requirements.

As a low resistance shunt component, the WOR Series can be used in current sensing and current measurement circuits. Its low inductance characteristic is suitable for circuit designs where the influence of parasitic inductance needs to be considered. The resistor can also be customized according to applied current and mounting requirements.

Product Specifications

The specifications above are organized from the electrical, mechanical, and environmental characteristics stated in the product documentation.

Performance Data for Component Selection

The WOR Series provides defined test conditions that can be used for technical component evaluation. Under the short-time overload test, the resistor is tested at 10 times its rated wattage for 5 seconds. The temperature cycle test covers -55℃ to +200℃ for 5 cycles, with a specified resistance change of ΔR/R ≤1%. The load life requirement is ΔR/R ≤3%, while the moisture-proof load life requirement is ΔR/R ≤2%.

For operation at ambient temperatures above 70℃, the rated load should be derated according to the specified derating curve. This provides a reference for selecting the operating load under elevated ambient temperature conditions.

Applications

Current Sensing and Measurement

The WOR Series can be used as a current sensing resistor in current measurement circuits. Its milliohm resistance allows the component to function as a shunt element for current measurement. The 2% tolerance option provides a defined resistance tolerance for B2B electronic circuit designs where low resistance and controlled tolerance are required.

Industrial Electronics

In industrial electronic equipment, the WOR Series can serve as a low resistance resistor in current sensing, measurement, and related circuit sections. The wire diameter/current specification can be provided according to the required application current, while mounting pitches such as 5 mm and 10 mm can be selected according to installation requirements.

Power and Power Electronics Circuits

In power and power electronics circuits, the WOR Series can be applied to current paths requiring low-resistance shunt measurement. Its low inductance resistor characteristic is relevant to circuit designs where inductive effects need to be considered. The short-time overload test of 10 times rated wattage for 5 seconds also provides a defined test condition for component evaluation under specified transient load conditions.

Customized Electronic Assemblies

The WOR Series supports customization based on wire diameter/current, pitch, nominal resistance, 2% tolerance, and forming requirements. M Form, MS Form, and MG Form configurations can be selected according to the required mounting structure, allowing the shunt resistor to be adapted to different electronic assembly requirements.