10-Position Receptacle Housing at 3.81mm Pitch — What You're Actually Ordering
The TE Dynamic D-3100 2-178288-8 is a 10-position, single-row receptacle housing with a 3.81mm pitch, designed for free-hanging, in-line wire-to-board or wire-to-wire harness applications. It accepts female crimp socket contacts (sold separately) and features a polarizing key to prevent mis-mating in multi-connector assemblies.
Contacts Not Included — The BOM Trap
This listing is for the housing only — the crimp socket contacts are ordered separately. A build-to-print harness quote that prices just this housing will come up short when the assembler finds no terminals in the kit.
Mating Half and Polarization
The 2-178288-8 mates with the corresponding Dynamic D-3100 series plug header (male pin housing) of the same 10-position, single-row layout. The polarizing key on the receptacle aligns with a keyway on the plug — a simple but effective guard against cross-mating when several similar connectors sit side by side in a panel or harness breakout.