These high-temperature, surface-mount Power Metal Strip resistors are said to be the industry’s first devices in the 3921 and 5931 case sizes to offer an operating temperature range of 65° to +275°C. The proprietary construction of the WSLT3921 and WSLT5931 devices incorporates a solid metal iron-chrome alloy resistive element with low TCR (<20PPM/°C), and specially selected and stabilized material for high-temperature capability. For designers, this high-temperature capability allows the resistors to be used in harsh, high-temperature environments without sacrificing power rating or electrical performance.
Vishay Intertechnology, www.vishay.com