Malvern, Pa. Vishay Intertechnology Inc. has introduced a surface-mount Power Metal Strip resistor with improved resistance stability during operation with a maximum resistance change of 0.5 % through a 2000-hour workload. In comparison, a typical current sensing resistor has a resistance stability of ≥1 % through a 1000-hour workload.
The WSLS2512 device features specially selected materials which allow for current sensing in high-temperature (125°C), tight stability applications that require precision current monitoring of sensitive circuits such as automotive electronic controls including engine, transmission, and pollution controls.
The WSLS2512 offers low resistance values of 0.01Ω to 0.1Ω and features an all-welded construction with a solid metal nickel-chrome alloy resistive element. The resistor offers low inductance values of 0.5 no to 2.0 no, a tight tolerance down to ±0.5 %, and low temperature coefficient of resistance (TCR) values as low as ±30 ppm/°C. Click the link for the WSL2512 datasheet.
Samples will be available in February 2007. Production quantities will be available in third quarter 2007, with a lead time of eight weeks for larger orders. Pricing for U.S. delivery is $0.70 to $0.80 each in quantities of 10,000.
Vishay Intertechnology, Inc., 1-402-563-6320, www.vishay.com