The 77313-115-40: The unshrouded design lets it mate directly with female socket strips or crimp housings for board-to-board stacking or wire-to-board connections.
No direct successor is listed. No pin-compatible replacement is officially documented by Amphen ICC (FCI).
The 0.100" row spacing and 0.100" pitch set a 2.54mm grid footprint — standard for breadboard and prototyping layouts. All 40 positions are loaded — no skipped pins.
