8-Position Shrouded Header in the Grace Inertia Family
The 3-1971906-4: This is a TE Connectivity Grace Inertia, GIC series header — 8 circuits in two rows on a 3.30 mm mating pitch, with a full 4-wall shroud that protects the male pins during handling and mating.
Pitch, Row Spacing, and Board Footprint
The 3.30 mm mating pitch and 5.20 mm row spacing set the PCB hole pattern — the header uses kinked pin, solder termination with a 0.118" post length, so the board footprint needs plated through-holes at those centres.
For a closer comparison within the same pitch family, the 1-1871673-2 is a 4-position, 2-row, 2.50 mm pitch header with a board lock and detent lock — different pitch and position count, but shares the shrouded 4-wall and tin-plated contact finish.