The TE Connectivity AMP-Latch 1658621-9 is a 40-position IDC receptacle designed for mass-termination to 26-28 AWG ribbon cable. The 0.100" (2.54mm) pitch matches the standard IDC footprint, and the dual-row layout with 0.100" row spacing keeps the board layout dense but routable. The feed-through design lets you daisy-chain multiple receptacles along a single ribbon cable run, which is useful for distributing a bus or common signal across several boards in a card-cage. The polarizing key in the housing prevents a 180° mis-mate — a real time-saver on a 40-position connector where a flipped cable means 40 wrong connections. The black housing is the standard colour for this position count in the AMP-Latch series.
Termination and Harness Assembly — IDC for 26-28 AWG Ribbon
The wire gauge range is 26-28 AWG, which covers the standard ribbon cable stock used in internal card-cage wiring and peripheral interconnects. The forked contact geometry is designed to pierce the insulation reliably across that gauge range without damaging the conductor strands. The polarizing key on the receptacle aligns with the corresponding slot on the header — verify the keying position matches your header before committing the harness build.