Low-Ohm UR73V Series – Higher Power, Improved TCR

KOA now offers the UR73V thick-film low-ohm series with improved performance data. The current sense resistor is available in 0805 and 1206 sizes, with a resistance range from 10 mOhm to 100 mOhm. A TCR of 75 ppm/K is specified from 15 mOhm (size 0805) and 12 mOhm (size 1206) upwards. At a terminal part temperature of 125°C, a rated power of 0.5 W applies to both sizes; at a terminal part temperature of 95°C, a rated power of up to 1 W is possible for size 1206.

The low TCR of the UR73V series, combined with the wide operating temperature range of -55°C to +155°C, allows for use in automotive applications as well as in highly reliable DC-DC converters. The series can be a cost-effective alternative to metal-plate shunt resistors. Naturally, the component meets the requirements of AEC-Q200.