Low-ohmic shunt resistors for miniaturized high performance
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Raw brings new high-power shunt resistors on the market. A low-ohm resistor of the GMR320 version has a nominal power of 10 W. The new design offers the highest nominal power of the GMR resistors, which are for high-power applications in industrial plants, the Automotive industry or household appliances. In the case of the extremely low-ohmic resistors of the PSR series, the nominal power has also been increased to 15 watts.
In the automotive industry and industry, the requirements for a lower power consumption in high-performance applications increased in recent years. This requires shunt resistors that support high performance and accurate current sensing. This is the only way to guarantee highly efficient operation in many applications. A shunt resistor of the GMR and PSR design from Rohm offers high-precision current protection even at high temperatures.
Shunt resistors of the GMR320 series
The GMR320 series With a size of 7142 it offers a resistance value in the range of 5 ohms to 100 ohms and a nominal power of 10 watts. The resistance tolerance is specified with F (± 1%). The temperature coefficient (TCR) is ± 25 ppm / ° C. The operating temperature is between -65 ° and +170 ° C. This resistor is therefore suitable for automotive applications such as engine control units and headlights as well Engines, Power Supply in industrial plants and household appliances.
Air circuit breaker, digital protection relay and soft starter
Optimized Materials and a special construction predestine the electrical components to reduce the temperature rise compared to standard shunt resistors by 23%. In addition, they guarantee a high level of resistance to overcurrent loading. They have the smallest dimensions among the resistors in the 10 watt class on the market. In addition, a high-performance metal alloy as the resistance element ensures a low temperature coefficient (TCR), which allows the current to be measured precisely and reliably even with a low resistance value.
Shunt resistors of the PSR version
Often used as a high-power shunt resistor PSR series the values for the maximum nominal power have been increased to up to 15 W and the TCR value has been improved by lowering the terminal temperature. The PSR series also offers a very low resistance value of 0,1 mΩ to 3,0 mΩ, a higher rated power and highly accurate current measurement in a compact housing. Like the GMR series, it contributes to further miniaturization in automotive and industrial construction.
The provider wants his range of electrical resistors to expand further in the future and provide various tools and other technical support. He would like to contribute to great energy savings and miniaturization in vehicle development and industrial plants.
Both series are according to the automotive reliability standard AEC-Q200 qualified for passive components. With a maximum operating temperature of 170 ° C, they guarantee high reliability - even in vehicle environments with particularly high temperatures, such as those found in the engine compartment.
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