The 1-2373378-0: Surface-mount termination means the header reflows onto the PCB alongside other SMT components in a single pass.
RoHS3 compliant per TE's current material declaration.
The 0.252 inch (6.40 mm) insulation height above the PCB leaves clearance for components underneath the shroud, and the 0.145 inch (3.70 mm) mating pin length ensures full contact wipe inside the receptacle.
Peer Comparison — 1-1871673-2 vs This Part
The closest functional sibling in the ledger is 1-1871673-2, a 4-position, 2-row, 2.50 mm pitch header with tin-plated contacts and through-hole right-angle mounting. The 1-2373378-0 offers 10 positions on a tighter 2.00 mm pitch with gold-plated mating contacts and SMT termination — a denser, more corrosion-resistant option for signal-level interconnects where the board layout requires surface-mount assembly.