How to Lay Out Kelvin 4-Wire Current Sense PCB Pads for Accurate Readings
For accurate Kelvin sensing, use two force pads and two sense pads, with the sense taps placed close to the resistor body inside the force…
Current Sense Resistor Inductance and Switching Noise
A current-sense resistor can add switching noise to the signal it is meant to measure. Its parasitic inductance produces an L·di/dt voltage in…
2512 Current Sense Resistor Heat Dissipation on Multilayer Boards
A 2512 resistor’s power rating doesn’t tell you how hot it will run on your PCB. The actual temperature depends on the heat path around it, which is…
Optimizing Junction-to-Ambient Resistance in SMD Diodes
What if a diode’s published junction-to-ambient thermal resistance doesn’t predict its temperature on your board? Surface mount diode thermal…