4W resistors in size 3264
ROHM has developed resistors with the industry's highest power rating of 4W for industrial and consumer applications.
ROHM has developed the LTR100L thick film shunt resistors, optimized for industrial and consumer applications. Shunt resistors, often used to detect current in battery protection and motor control circuits, require greater accuracy to improve reliability and ensure high operational efficiency.
In recent years, the emphasis has been on energy saving in industrial and consumer fields, with efforts to reduce energy consumption during drive operation using motor inverters. At the same time, protection circuits are becoming more and more important in these fields as applications continue to increase in power.
ROHM has expanded its offering with the GMR320 series of metal shunt resistors, originally launched in February 2021. These devices are characterized by a higher guaranteed rated power up to 10W. Since April 2018, ROHM has been producing a series of low-impedance LTR50 thick-film shunt resistors with a power of 2W. With these latest products, ROHM has expanded its line of thick film shunt resistors to cover an even larger power area.
The LTR100L series achieves the industry's highest power rating of 4W in size 3264 (3.2mm × 6.4mm) / 1225 (0.12in × 0.25in) by changing the resistor materials and lowering the terminal temperature. This makes them ideal for detecting current in motor control circuits and overcurrent protection in industrial and consumer applications that tend towards higher wattages. In addition, the optimization of the component structure ensures the best-in-class TCR (Temperature Coefficient of Resistance) characteristic of thick film shunt resistors. As a result, their operation is not affected by temperature, which ensures high accuracy and reliability of current detection.
Moving on, ROHM will continue to expand its line of low to high power resistors. The main goals set for them are, inter alia, achieving greater energy savings and reliability while contributing to the continued evolution of industrial and consumer equipment.
This article was published courtesy of Gamma