Design-Engineering Note: 58-Position Unshrouded Header for Board-to-Board Interconnects
It uses a dual-row layout on a standard 0.100" (2.54 mm) pitch, with an identical 0.100" row spacing, making it footprint-compatible with legacy through-hole layouts and common prototyping grids.
With 58 positions loaded across two rows, this header matches a BOM line calling for a 58-circuit board-to-board connection. The right-angle through-hole termination requires a drilled PCB layout; the 0.110" post length provides clearance for standard board thicknesses.