The TE Connectivity 440146-2 is a 2-circuit, single-row receptacle housing from the High Performance Interconnect (HPI) series. It uses a 0.049" (1.25mm) pitch — tight enough to keep the board footprint small, but wide enough that routing a single signal trace between pads is straightforward on a standard 2-layer board. The housing is natural thermoplastic, free-hanging (in-line), and accepts female socket contacts that are crimped onto the wire. This is the wire-side half of a wire-to-board connection; it mates with the corresponding HPI header (sold separately).
The One Thing That Trips Up a BOM
The listing explicitly states "Contacts Not Included". That is not a footnote — it is the primary sourcing note. The 440146-2 ships as an empty housing shell. You need to order the matching crimp terminals separately, then strip, crimp, and insert them into the cavities. If you are filling a BOM line for a complete mated connector, add the terminal part number to the line item. The 1.25mm pitch terminal for this series is a standard TE crimp socket — confirm the wire gauge range against your harness build.