What This 4-Position MTA-100 Receptacle Does
The 3-644044-4: It terminates 28 AWG discrete or ribbon cable via an IDC (Insulation Displacement Connection) slot — no wire stripping, no crimping. The closed end acts as a positive stop for the ribbon cable, preventing over-insertion and keeping the conductors aligned with the IDC slots during mass termination.
Termination and Wire Prep — IDC for 28 AWG
The IDC termination is designed for 28 AWG wire, either discrete or ribbon cable. The closed-end housing gives a hard stop for the ribbon, so the conductors land at the same depth every time. For a harness builder, this means consistent pull-off force across all four positions without a visual inspection step.
That thickness is well above the 15µin flash typically used for single-mate consumer harnesses. In a field-service or unsealed environment, the thicker gold layer resists corrosion through repeated insertions and exposure to humidity.
The 3-644044-4 is the 4-position variant of the MTA-100 receptacle line. If the BOM calls for a 4-position wire-to-board connection at 0.100" pitch, this is the receptacle that matches.