Mag-Mate Size 1 Box IDC
The 62938-1 is a Size 1, Style 187 Box IDC terminal in TE Connectivity's Mag-Mate series, designed to terminate 31-33 AWG magnetic wire to a PCB via a PCB post.
Wire gauge vs termination style
Within the Mag-Mate Size 1, Style 187 family, the 62938-1's 31-33 AWG range sits below the 62430-1 (28-30 AWG) — both share the PCB post termination, so the choice comes down to the wire diameter on the build. The 63039-1 also handles 31-33 AWG but terminates by crimp rather than PCB post — the 62938-1 is the right pick when the circuit ends at a board, not a flying lead.