The lineup of high-power shunt resistors is further expanded to help miniaturize high-power applications

     ROHM, a world-renowned semiconductor manufacturer, has developed the 10W resistor "GMR320" with the largest rated power among the "GMR series" high-power low-resistance shunt resistors for high-power applications such as automotive, industrial equipment, and white goods.

     In recent years, in the field of automotive and industrial equipment, the trend of high-power applications has accelerated, which requires products to further save energy. Therefore, the shunt resistor used to detect the current is also required to support high power, and it is also required to have a high-precision current detection function required for energy-saving driving applications. ROHM's GMR and PSR series shunt resistor products can sense current with high accuracy even when used under high power conditions, making them ideal for high-power applications in automotive, industrial equipment, and consumer electronics.

     The newly developed GMR320 has a power rating of 10W and a lineup of resistance values ranging from 5mΩ to 100mΩ, making it ideal for applications such as automotive engine ECUs and power supplies and motors for headlamps, industrial equipment, and white goods. By adopting ROHM's own material and structure, the surface temperature rise has been suppressed by 23% compared with ordinary products, so this product is not only ultra-small in rated power 10W class products, but also when subjected to overcurrent loads Demonstrates excellent durability. In addition, the resistor body metal of this product is a high-performance alloy material that has an excellent temperature coefficient of resistance (TCR*1) even in the low resistance range, enabling highly accurate and highly reliable current detection.

     At the same time, for the "PSR series", which is highly regarded as a high-power shunt resistor, the guaranteed value of the rated power has been extended to a maximum of 15W by derating the pin temperature, and the specification value of the temperature coefficient of resistance has also been improved. . The "PSR series" has a lineup of ultra-low resistance values ranging from 0.1mΩ to 3.0mΩ, and the same small package as the "GMR series" supports high-power and high-precision detection, contributing to the miniaturization of automotive and industrial equipment.