Vishay Dale WSK1206 Power Metal Strip current sense resistor

Vishay Intertechnology has announced a surface-mount Power Metal Strip current sense resistor featuring a Kelvin 4-terminal connection that reduces TCR down to 35 ppm and enables tight tolerances down to 0.1%. The Vishay Dale WSK1206 combines tight tolerance and low TCR with low resistance values down to 0.01Ω in the compact 1206 case size.

With its 4-terminal construction, the device reduces system errors while eliminating the need for system calibration. The construction incorporates a solid metal nickel-chrome or manganese-copper resistive element with low TCR (<20 ppm/°C). This results in a pulse-tolerant, tight tolerance resistor in the 1206 package size that maintains the good electrical characteristics of the Power Metal Strip construction. The device’s low resistance value minimises excess power dissipation, while its tight tolerance and low TCR reduce measurement error and eliminate the need for calibration during manufacturing or in the field.

The product is suitable for current sensing, voltage division and pulse applications in power management for mobile phones; DC/DC converters for servers, VRMs for laptops and Li-ion battery safety and management; industrial instrumentation; and automotive electronic control such as engine, transmission, antilock brakes, audio and climate controls.