Vishay Intertechnology, Inc. has recently introduced a new surface-mount Power Metal Stripâ„¢ current-sense resistor, the WSKW0612, designed for high-precision applications. This compact 0612 package offers a power rating of 1.0W, making it four times more powerful than standard 1206 resistors while saving valuable board space. The WSKW0612 is ideal for a wide range of applications, including mobile power management, server DC/DC converters, laptop VRMs, and battery management systems.
Engineered for accuracy, the WSKW0612 utilizes a welded copper joint construction combined with a Kelvin 4-wire connection, significantly reducing thermal coefficient of resistance (TCR) to as low as 75 ppm. This advanced design minimizes resistance and improves measurement precision, especially in high-current environments. With a minimum resistance of 0.001 Ω, the resistor helps reduce power loss and enhances system efficiency.
The WSKW0612 features a solid metal nickel-chromium and manganese-copper core, delivering excellent stability under pulse loads and maintaining tight tolerances. It supports resistance values from 0.001 Ω to 0.003 Ω with ±1.0% or ±5.0% tolerance, along with a thermal EMF of less than 3μV/°C. The device operates reliably across a wide temperature range, from -65°C to +170°C, ensuring performance in demanding environments.
Designed for use in automotive, industrial, and consumer electronics, the WSKW0612 is suitable for applications such as anti-lock braking systems, air conditioning inverters, and climate control units. It is also RoHS compliant and free from halogens, aligning with modern environmental standards.
For more details, Vishay provides an application note titled "Wells of WSKW0612 Welded Joints," which explains the benefits of the welded joint and Kelvin connection, compares different joint structures, and offers layout recommendations. The WSKW0612 is now available in volume production, with lead times ranging from six to eight weeks for larger orders. This innovative resistor sets a new benchmark in precision, reliability, and performance for current sensing applications.
DB 25 Connector
Dongguan City Yuanyue Electronics Co.Ltd , https://www.yyeconn.com