Board-Stacking Fit: 140 Positions at 0.80mm Pitch
The 0.031" (0.80mm) pitch packs 140 circuits into a compact footprint — the routing density demands careful trace escape planning on the PCB, especially for the inner rows of this 2-row layout. Gold-plated center strip contacts (8.00µin / 0.203µm) handle moderate mating cycle counts typical of production test and field-service swaps, though the thin plating won't match the cycle life of a 30µin or 50µin gold option.
Stack Height Options and Mating Half
The 0.230" (5.85mm) height above board of the plug itself is the un-mated profile; the final stack height depends on the receptacle height chosen. Surface-mount termination (SMT) suits automated pick-and-place assembly, and the Tape & Reel packaging feeds directly into the line without a tray changeover.
Sourcing and Lifecycle Reality
The base product number 5177986 ties to the full Free Height family, so mating receptacles and alternate position counts share the same footprint geometry.
The 1-120532-2 is a different Free Height variant at 1.00mm pitch with 84 positions — a looser pitch that eases trace routing but carries fewer circuits. The 1-5177986-6 at 0.80mm pitch packs 140 positions into roughly the same board edge length, so the decision between them is density vs routing layer count. The 1-120532-2 also carries 50.0µin gold plating against the 8.00µin on this part, making it the better choice for applications requiring higher mating cycle durability.