The FCI Amphenol 87900-408HLF is an 8-position, dual-row unshrouded header from the BergStik® II series, on the standard 0.100" (2.54mm) pitch. The tin-plated square pins are rated 5A per contact at the stated voltage of 110V. This is a workhorse general-purpose header for PCB stacking or wire-to-board via a matching receptacle — the unshrouded design keeps the footprint compact and the cost low, but provides no keying or polarization.
The 0.100" (2.54mm) pitch matches the standard DIP IC footprint — this header lands on a 2.54mm grid, so the PCB layout is straightforward but the routing density is limited to one trace between pads on a typical two-layer board. The 5A per-contact rating is fine for signal-level power and low-current I/O, but the tin-on-tin contact interface (100.0µin (2.54µm) on the mating side) means the mating cycle life is lower than gold-plated alternatives — this is a cost-optimized part for one-and-done or low-cycle-count assemblies, not for repeated field servicing. For a bench-level prototype or a fixed harness where the connector pair is aligned by the enclosure, this is fine. For a blind-mate or high-vibration application, a shrouded header would be the safer call.