Bourns has announced a line-up of what it describes as high power, ultra-low ohmic current sense resistor products. According to the company, its current measurement devices help power electronics developers save energy while maximising sensing performance in their designs.

The Model CSS series features feature low temperature coefficient of resistance (TCR) for operating accuracy over wide temperature ranges and excellent long term stability. Their very low resistance levels, low thermal electromotive force (EMF) and high power handling capabilities make them ideal solutions for a variety of industrial applications and power electronics including battery management systems, switch mode power supplies and motor drives.

Model CSS series

Bourns' Model CSS series is available in both 2 and 4-terminal options. The 2-terminal models are offered in three different foot print sizes, 5930, 3920 and 2512. The 4-terminal devices allow for very precise 4K resistance measurement. Their metal alloy current sensing element allows for low thermal EMF and low TCRs of 50ppm/°C in the 20°C to 60°C temperature range. Both series options supply resistance values as low as 0.5mΩ, and customers can select from a range of low resistance options and power ratings of up to 9W.

The Bourns Model CSS2H-5930 series is available and is RoHS compliant. As a pricing reference, Model CSS2H-5930 is priced at $0.556 each in 3,000 piece quantities.