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Vishay’s new Compact WSKW0612 Power Metal Strip Resistor offers 4x Power and Improve Efficiency

Vishay Dale WSKW0612

Vishay Intertechnology announces a new surface-mount Power Metal Strip current sense resistor with an extended power rating of 1.0 W in compact 0612 case size.

Catering enhanced measurement precision, the Vishay Dale WSKW0612 is touted to feature a welded copper terminal construction and a Kelvin 4terminal connection that reduces TCR down to 75 ppm.

The device offers:

  • Low resistance values down to 0.001 Ω to minimize excess power dissipation and improve end product efficiency.
  • With 4x the power of standard resistors, it allows designers to save board space and reduce costs by utilizing fewer and smaller components.
  • The WSKW0612’s welded terminals reduce terminal resistance for higher accuracy than clad or electroplated terminals, while the low TCR provided by its 4-terminal connection reduces system measurement errors compared with typical 2-terminal devices.
  • The device’s advanced construction incorporates a solid metal nickel-chrome and manganese-copper resistive element with low TCR (< 20 ppm/°C). This results in a pulse-withstanding, tight-tolerance resistor that maintains the superior electrical characteristics of the Power Metal Strip construction.
  • A proprietary processing technique produces extremely low resistance values ranging from 0.001 Ω to 0.003 Ω, with tolerances of ± 1.0 % and ± 5.0 %.
  • The device provides low thermal EMF (< 3 μV/°C) and a temperature range from -65 °C to +170 °C.

Applications

The WSKW0612 is ideal for all types of current sensing and pulse applications in power management for cell phones; DC/DC converters for servers, VRMs for laptops, and Li-ion battery safety and management; industrial instrumentation and air conditioning inverters; and automotive electronic control such as engine, transmission, anti-lock brakes, audio, and climate controls.

The device is RoHS-compliant, halogen-free, and Vishay Green.

Additionally, offering further information about the WSKW0612, Vishay’s application note “WSKW0612 Welded Terminal Advantage” is sought to provide an in-depth look at the benefits of the device’s terminals and Kelvin connection, outlines the differences between welded copper and copper-clad terminal construction, and provides a recommended pad layout.

Availability

Samples and production quantities of the new resistor are available now, with a lead time of six to eight weeks for larger orders.

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