The Amphenol/FCI 79425-116HLF is a 16-circuit, dual-row unshrouded header from the BergStik® II series, designed for board-to-board signal interconnect on a standard 0.100-inch (2.54 mm) pitch grid.
Pitch and Footprint — What Fits the Board
The 0.100-inch (2.54 mm) pitch and matching 0.100-inch row spacing place this header on the industry-standard 0.100-inch grid, so the PCB footprint is a straightforward dual-row set of 16 plated through-holes. The 0.120-inch (3.05 mm) post length is sized for standard 0.062-inch boards; the 0.190-inch (4.83 mm) mating pin length gives enough reach for the mating receptacle without bottoming out.
Plating and Current — What the 5 A Rating Really Means
The 5 A per-contact rating is typical for a 0.100-inch pitch header, but the 30.0 µin gold or GXT™ on the mating surface is what carries the duty. The 110 V rating is conservative for signal-level board-to-board links.