The ACS37630 is a contactless current sensor using Allegro’s high-precision vertical Hall technology designed for applications where current flows through a busbar or PCB. The ACS37630 is a contactless current sensor designed for applications where current flows through a busbar or PCB. When used with a U-core concentrator, high immunity to stray fields can be achieved, while simplifying the mechanical assembly relative to a traditional C-core current sensor. Laminated U-cores should be used for high frequency applications.