ROHM announced industry’s highest rated power shunt resistors in the 0508 wide terminal size (reverse geometry) that contributes to greater miniaturization. Lineup also expanded to include 2 updated general-purpose MCR series shunt resistors.
ROHM has recently developed wide terminal shunt resistors, LTR10L. They are optimized for a variety of applications in the automotive, industrial, and consumer sectors, while also strengthening its considerable lineup with two updated general-purpose MCR series shunt resistors (MCR10L and MCR18L).
In recent years, high efficiency operation is required from the viewpoint of energy conservation – not only in battery-driven applications such as mobile devices and EVs, but in consumer and industrial equipment as well powered by electrical outlets.
For high efficiency, it is important to accurately detect parameters such as current and voltage in order to operate devices optimally. This requires shunt resistors that combine high accuracy with high reliability current detection. At the same time, manufacturers of applications utilizing higher board densities are demanding even smaller shunt resistors.
To meet these needs, the new LTR10L series delivers the industry’s highest rated power and best-in-class temperature coefficient of resistance (TCR) in a compact 0508-size (0.5inch × 0.8inch) / 1220-size (1.25mm × 2.0mm) that contributes to both high reliability and greater miniaturization.
- Thick film / Wide terminal type
- Product size(inch)：0508 ～ 1225
- Rated power：0.5W ～ 2W
- Resistance range：10mΩ ～ 1Ω
- Guarantee high rated power by high heat dissipation structure
Improving the resistive element material and applying terminal temperature derating method allowed LTR10L to deliver an industry-leading 1W rated power in the 0508-size – 88% smaller than existing products. In addition, high-accuracy ±0.5% resistance tolerance has been achieved, together with best-in-class TCR and anti-sulfuration characteristics. These features make them ideal for applications exposed to harsh conditions, including telecommunication base stations requiring high durability and automotive LED headlamps that demand high accuracy current sensing along with long-term reliability.
On the other hand, the MCR10L and MCR18L series of general-purpose shunt resistors utilize an improved element structure and materials to increase rated power to 0.5W and 0.75W, respectively, over their conventional MCR series rated power (0.25W). Higher rated power enables the same performance in a smaller size, contributing to product miniaturization.
Going forward, ROHM will continue to expand its lineup of resistors (its founding products) that leads to improved miniaturization and reliability while striving to ensure long-term stable supply.