Vishay launches high-power current sense resistor in compact size

Published 01/10/2025, 16:06
Vishay launches high-power current sense resistor in compact size

MALVERN, Pa. - Vishay Intertechnology, Inc. (NYSE:VSH), a $2.07 billion electronic components manufacturer with a FAIR financial health rating according to InvestingPro, introduced a new surface-mount current sense resistor that delivers 5 W power rating in a compact 1206 case size. The Power Metal Strip WSLF1206 resistor features power ratings 20 times higher than standard resistors in the same footprint.

The new component provides power density exceeding 650 W/in², allowing designers to save board space in high power circuits without needing to use parallel resistance elements. It offers resistance values from 0.3 mΩ to 3 mΩ with tolerances of ± 1.0% and ± 5.0%.

According to the company’s press release, the resistor features a temperature coefficient of resistance (TCR) down to ± 75 ppm/°C, providing stable current measurement across temperatures from -65°C to +170°C. Its low resistance values help minimize power losses in end products.

The WSLF1206 incorporates a solid metal manganese-copper, nickel-chromium aluminum alloy resistive element with low thermal EMF (

The component is designed for current sensing applications in industrial motor drives, robotics, power tools, HVAC systems, uninterruptible power supplies, and computing equipment. It is sulfur-resistant, RoHS-compliant, and halogen-free.

Samples and production quantities are available now with lead times of 8 to 10 weeks.

In other recent news, Vishay Intertechnology, Inc. has introduced four new 1200 V FRED Pt Hyperfast rectifiers in its Gen 7 platform, expanding its product offerings for industrial and automotive applications. These rectifiers, available in the SlimSMA HV package, include both standard and automotive-qualified models. Additionally, Vishay’s SL2220007 bigAMP thermistor has received UL certification, confirming its compliance with safety and performance standards. The company also plans to showcase its latest semiconductor and passive technologies at PCIM Asia 2025, with a focus on artificial intelligence infrastructure and electric vehicles. In a separate development, Vishay launched the industry’s first surface-mount Y1-rated capacitors for electric vehicles, designed for EMI/RFI suppression in high humidity environments. Furthermore, Vishay unveiled a new series of high voltage ceramic capacitors targeting industrial and medical applications, boasting improved capacitance loss and dissipation factor compared to similar products. These developments reflect Vishay’s ongoing efforts to enhance its product lineup across various sectors.

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