Current sense resistor line offers smaller package sizes
Summary
Bourns has announced the availability of smaller package sizes and feature options in its Model CFN Metal Foil Current Sense Resistor Series. These attributes make the Model CFN series an optimal current sensing solution for power supply, stepper motor drive, and input amplifier applications. Ever important in current sensing is having a suitably low TCR, which is determined by characteristics such as the materials used in the resistive element, power rating, and physical size of the component. Bourns has leveraged metal foil technology to achieve lower resistance values, ranging from five to 40 milliohms, and still provide power ratings of 0.25 to 1W in components small enough for mobile applications. Placing a metal foil resistive element on the bottom side of the ceramic substrate shortens the thermal pathway and improves heat dissipation characteristics.