What This MTA-100 Receptacle Does in a Harness
The feed-through feature means the IDC contacts pass the signal through the housing — you can daisy-chain multiple receptacles on the same cable without cutting or splicing. That saves a termination step in multi-drop harness layouts like control-panel ribbon buses or LED strip power distribution.
Termination and Wire Fit — 22 AWG IDC
No stripping, no crimping, no solder. Gold is not needed here because the IDC joint is a one-time termination; the mating cycles are handled by the tin-on-tin interface with the header pin. Free-hanging mounting means no board lock or panel hole — the connector floats on the wire bundle and mates to the header by the locking ramp alone.
Mating and Compatibility with MTA-100 Headers
The 3-640620-7 mates with any MTA-100 7-position pin header at 0.100" pitch — the locking ramp on the receptacle engages the latch window on the header. The red color is a visual key for the 7-position variant in the MTA-100 system, which also uses natural (white) for other position counts — helpful when staging multiple harnesses on the same line.