The TE Connectivity AMP-Latch 1658620-9 is a 40-position IDC receptacle designed for mass-termination to 0.050" pitch ribbon cable. The 0.100" (2.54mm) pitch between contacts matches the standard spacing of a 0.050" ribbon cable pair, so the 40 positions map directly to a 40-conductor ribbon. The housing is black, free-hanging (in-line), and includes a feed-through feature that allows the ribbon cable to pass through the connector body — useful for daisy-chaining multiple receptacles along a single cable run without breaking the signal path.
This receptacle accepts 26-28 AWG ribbon cable. The IDC termination is sized for those gauges — the forked contact gap and insulation-piercing profile are tuned to the standard insulation diameter of 28 AWG ribbon, so 28 AWG is the sweet spot. 26 AWG works but the larger conductor fills more of the slot; verify the cable's overall thickness stays within the housing's cable-entry clearance. No strain relief is built into the housing itself — if the cable will see flex or pull after termination, an external strain-relief boot or cable tie should be added at the harness level.
It is ROHS3 compliant. No official replacement or cross-reference part number is on record — this is the current production part for this configuration.
How It Compares: 1-226733-4
The closest functional sibling in the same AMP-Latch family is the 1-226733-4, a 17-position receptacle. Both share the 0.100" (2.54mm) pitch, 2-row layout, IDC termination, free-hanging mount, and gold contacts. The critical difference is circuit count: 40 positions versus 17. If your BOM calls for 40 conductors, the 1-226733-4 is too few; if the design uses 17, the 1658620-9 is overkill and wastes cable width. No other spec — wire gauge range, contact type, or plating thickness — differs between them.