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Image of Vishay-Dale Power Metal Plate™ WFM Series Resistor - Slide7

In summary, Vishay’s automotive grade Power Metal Plate™ current sense resistors featuring 2W and 3W power ratings in 2010- and 2512-sized packages. Aimed at current sensing and pulse applications (power supplies, instruments, power amplifiers, shunts, power inverters, and battery management circuitry) the WFM resistors allow designers to use a single high power resistor instead of running multiple resistors in parallel, which can cause current measurement errors. By thus improving power density, the WFM additionally promotes space savings on the circuit board that will in turn enable smaller and lighter products for the end customer. A proprietary processing technique enables a wide range of low resistance values from 5mΩ to 500mΩ, with tolerances down to ±1.0 %. The resistors feature a solid metal Manganese-Copper or Nickel-Chromium alloy resistive element with low TCR (<20 ppm/°C), low inductance values of 0.5nH to 5nH, low thermal EMF to < 3µV/°C, and an operating temperature range of -65°C to 170°C. The devices are RoHS compliant, halogen-free, and Vishay Green.

PTM Published on: 2020-04-20