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Resistors offer improved resistance stability

Posted: 01 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:resistor? Power Metal Strip? Vishay? current sensor? automotive?

Vishay's WSLS2512 Power Metal Strip resistor

Vishay Intertechnology Inc. has announced a new surface-mount Power Metal Strip resistor that offers improved resistance stability during operation with a maximum resistance change of 0.5 percent through a 2000hr workload. By comparison, the typical current sensing resistor has a resistance stability of 1 percent through a 1000hr workload.

The WSLS2512 devices feature specially selected materials which allow for current sensing in high-temperature (125C), tightened-stability applications that require precision current monitoring of sensitive circuits, such as automotive electronic controls including engine, transmission and pollution controls.

Manufactured using proprietary techniques that result in extremely low resistance values of 0.01 ohm to 0.1 ohm, the WSLS2512 features all-welded construction with a solid metal nickel-chrome alloy resistive element. The resistor offers low inductance values of 0.5nH to 2nH, a tight tolerance down to 0.5 percent and low TCR values down to 30ppm/C.

Samples of the new resistor will be available this month. Production quantities will be available in Q3 2007, with a lead time of eight weeks for larger orders.

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