Board-to-Board Header at 0.100" Pitch
The 77311-418-30LF: The through-hole solder termination gives a solid mechanical anchor for the board stack. Rated 3 A per contact with tin-on-tin plating. The 0.230" (5.84 mm) mating length gives a reliable wipe distance for the socket contact.
The unshrouded design means the header has no plastic walls around the pins — the mating socket must provide its own alignment and polarization. For vibration-prone environments, consider a shrouded header or a secondary locking mechanism on the receptacle side.