9-Position Economy Power 2.5 Plug Housing — the Housing You Order Before You Remember the Terminals
The TE Connectivity 1744417-9 is the 9-circuit, single-row plug housing from the Economy Power 2.5 series, a wire-to-board interconnect family built around a 2.50mm pitch. The critical note on the line: contacts are not included. This housing accepts the separately ordered female crimp socket terminals, so a BOM that stops at the housing alone leaves the harness builder with an empty shell.
2.50mm Pitch, Latch Lock, and the Procurement Trap
The 2.50mm pitch is the dimension that decides the board footprint — the mating header's pins are on that same 0.098" spacing, so the PCB layout is locked once you pick this series. The single-row, 9-position layout keeps the housing narrow, which helps when routing multiple wire-to-board connections across a crowded board edge. A hand-tight latch lock should hold it. But the single most common mistake on this part is ordering the housing without the crimp terminals — the 1744417-9 is a shell that needs the matching female socket contacts to complete the interconnect.