Current Sense Resistors for Automotive and High-Reliability Applications
5 August 2026 
Bourns has announced the CFG-A Series Wide-Terminal Metal Foil Current Sense Resistors, available in 0508 and 0612 footprints.
The company says rated up to 2 W and covering a resistance range of 1–30 mΩ, the CFG-A Series is AEC-Q200-compliant and designed for automotive power electronics, motor drives, and other high-reliability applications where accurate, thermally stable current measurement is required.
Automotive electrification, spanning 12 V to 48 V mild-hybrid architectures and beyond, is raising current sensing accuracy requirements while simultaneously compressing available board space. OEMs are specifying AEC-Q200-qualified passives as standard, and designers of compact ECUs and power modules face growing pressure to manage thermal hotspots without enlarging their PCB footprint. The CFG-A Series addresses these demands directly through its metal foil sensing element, wide-terminal construction, and automotive-grade qualification.
Compared with conventional thick-film current sense resistors, the metal foil element in the CFG-A Series can deliver lower TCR and better stability under sustained load. The wide-terminal geometry lowers thermal resistance from the resistive element to the PCB, reducing localised heating and improving long-term drift performance. These capabilities deliver a measurable advantage in applications where stable current measurement over the product lifecycle matters.
“As automotive power levels climb and ECU packaging tightens, current sensing components must deliver more in less space. The CFG-A Series gives engineers a qualified path to accurate, thermally robust shunt sensing in the 0508 and 0612 footprints they’re already designing around.” – Walter Garcia, Product Line Manager Resistors, Bourns