Offering High Power Density of > 650 W/in2, Space-Saving Device Provides Low Resistance Down to 0.3 mΩ to Increase Efficiency
MALVERN, Pa., Oct. 01, 2025 (GLOBE NEWSWIRE) -- Vishay Intertechnology, Inc. (NYSE: VSH) today introduced a new surface-mount Power Metal Strip® current sense resistor that combines a high power rating up to 5 W, TCR down to ± 75 ppm/°C, and extremely low resistance values down to 0.3 mΩ in the compact 1206 case size.
With power ratings 20 times higher than standard resistors in the 1206 footprint, the Vishay Dale WSLF1206 provides a power density of > 650 W/in², allowing designers to save board space in high power circuits by utilizing the smallest resistor possible without the need to parallel resistance elements. The device’s low TCR provides stable and accurate current measurement across a wide temperature range from -65 °C to +170 °C, while its low resistance values minimize power losses and improve end product efficiency.
The WSLF1206’s advanced construction incorporates a solid metal manganese-copper, nickel-chromium aluminum alloy resistive element with low TCR (< 20 ppm/°C). This results in a higher power resistor in a smaller size that maintains the superior electrical characteristics of the Power Metal Strip construction. A proprietary processing technique produces resistance values ranging from 0.3 mΩ to 3 mΩ, with tolerances of ± 1.0 % and ± 5.0 %. The device provides low thermal EMF (< 3 μV/°C) and very low inductance (< 5 nH) to minimize signal distortion.
The resistor released today is ideal for all types of current sensing and pulse applications, including switching and linear power supplies, power amplifiers, shunts, power inverters, and battery management. Typical applications will include industrial motor drives, robotics, power tools, HVAC systems, and UPS; graphics, data storage, and VRMs for supercomputers; and consumer appliances. The device is sulfur-resistant, RoHS-compliant, and halogen-free.
Samples and production quantities of the WSLF1206 are available now, with lead times of 8 to 10 weeks.
Vishay manufactures one of the world’s largest portfolios of discrete semiconductors and passive electronic components that are essential to innovative designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets. Serving customers worldwide, Vishay is The DNA of tech.® Vishay Intertechnology, Inc. is a Fortune 1000 Company listed on the NYSE (VSH). More on Vishay at www.Vishay.com.
The DNA of tech® is a registered trademark of Vishay Intertechnology, Inc. Power Metal Strip is a registered trademark of Vishay Intertechnology, Inc.
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Link to product photo:
https://www.flickr.com/photos/vishay/albums/72177720329007404
Link to datasheet:
http://www.vishay.com/ppg?30430 (WSLF1206)
For more information please contact:
Vishay Intertechnology
Peter Henrici, +1 408 567-8400
peter.henrici@vishay.com
or
Redpines
Bob Decker, +1 415 409-0233
bob.decker@redpinesgroup.com
