Vishay battery shunt resistor uses two pins for PCB mounting

Vishay Dale WSBS8518.20 shunt resistor

Vishay Intertechnology has announced a power metal strip battery shunt resistor with two sense pins and that provides a 36W power capacity in the 8518 case size.

With resistance values down to 50µΩ, the Vishay Dale WSBS8518.20 is said to increase accuracy and lower costs compared with Hall Effect current sensing, while its sense pins assist in PCB mounting and provide consistent contact point location.

The device uses a proprietary processing technique that produces resistance values of 50, 100, 125 and 250µΩ. These values are said to allow for more accurate data to determine battery charge and discharge, thus helping designers meet battery management requirements for applications in petrol, diesel, hybrid and electric cars and lorries, as well as electric forklifts, UPS systems and other heavy industrial applications.

The device has a solid metal manganese-copper alloy resistive element with a TCR of ±20ppm/˚C and a welded terminal to element connection. The resistor offers inductance values of less than 5nH, thermal EMF down to less than 1µV/˚C and an operating temperature of -65 to +170˚C.

The device is RoHS-compliant, halogen-free and Vishay Green. Samples and production quantities are available with a lead time of ten to twelve weeks for larger orders.

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