The TE Connectivity 171822-3 is a 3-position, single-row receptacle housing from the EI series. It's a free-hanging (in-line) crimp housing — no PCB footprint, no soldering — designed for wire-to-wire or wire-to-panel harness connections. The 0.098" (2.50mm) pitch sets the contact spacing, which means the mating header must match that pitch exactly. The natural PA66 (Nylon 6/6) housing handles a -20°C to 95°C operating range, covering most indoor and sheltered outdoor equipment but not high-heat engine compartments.
The One Thing That Trips Up Sourcing
The listing explicitly notes 'Contacts Not Included'. This housing ships empty — you must order the matching female crimp socket terminals separately. The TE EI series uses a standard crimp contact; the exact wire gauge range for the terminal is not listed in this housing spec, so confirm the terminal part number against your wire size before committing the BOM line. Without the contacts, this is just a shell.
Mating Half and Termination
This receptacle mates with a 0.098" (2.50mm) pitch plug header from the same EI series. The crimp termination means you terminate the wires into the socket contacts first, then insert them into the housing cavities. No special tooling beyond a standard crimp tool and insertion tool is needed for field assembly.