Welded shunt CSM2F series

copper

Bourns offers high power shunt resistors manufactured using a metal alloy element that is electron-beam welded to tinned copper terminals. The Bourns® Model CSM Series is available in three different footprint sizes: 8518, 7036, and 6918 metric, with resistance values as low as 50 µΩ, meeting low voltage drop and high-accuracy requirements with the ability to handle high currents up to 1000 A and permanent power ratings of up to 50 W. The Model CSM Series is AEC-Q200 compliant with a high pulse power rating. The metal alloy current sensing element allows thermal EMF as low as 0.25 µV/K and a low TCR of 50 PPM/° which our customers find particularly well-suited for automotive applications with high temperature fluctuation. Bourns® Model CSM high power current sense shunts are ideal for battery management system applications. Proper battery management requires the continuous monitoring of current flow through the electrical circuit. Monitoring the status of the battery is essential in automotive and other market segments where rechargeable batteries are used. Using Bourns® CSM Series for battery management provides a very accurate and cost-effective method to meet these needs. Upon request, Bourns can offer customized parts to meet a customer’s required shape, mechanical and electrical characteristics. Additional percussion welded current sense pins are available in order to connect current sense resistors properly to the circuit board. Keeping current sense traces/wires as short as possible between the shunt and current measurement chipset is very important for measuring accuracy.