Vishay Introduces New 1W, Surface-Mount Power Metal Strip® Resistor
Vishay Intertechnology, Inc. announced a new high-temperature 1W surface-mount Power Metal Strip® resistor that the company claims is the first current-sensing resistor in the 2512 case size to operate in a temperature range of -65 to +275°C. The WSLT2512 resistor features a very low 10-mΩ to 500-mΩ resistance value range, a tight tolerance down to ±0.5 %, and low TCR values down to ±75 ppm/°C.
The temperature range of the WSLT2512 allows it to replace larger current-sensing resistors with a similar +275°C maximum operating temperature. Its robust specifications allow the WSLT2512 to be used for current-sensing and pulse applications in harsh, high-temperature environments without sacrificing power rating or electrical performance. The range of systems into which the WLST2512 will be designed includes automotive engine controls, safety controls, multi-media electronics, climate controls, and anti-lock brakes; and industrial oil/gas well drilling, including down hole test/measurement equipment.
Manufactured using proprietary techniques that result in extremely low resistance values, the WSLT2512 features all-welded construction with a solid metal nickel-chrome alloy resistive element. The resistor offers low inductance values, an excellent frequency response to 50 MHz, and low thermal EMF of less than 3 µV/°C. Samples and production quantities of the new resistor are available now, with a lead time of four to six weeks for larger orders. Pricing for U.S. delivery in 100,000-piece quantities starts at $0.29 per pieces.
