Board Fit and Mating Half
The 77311-102-27LF: Unshrouded design means the mating receptacle slides directly over the pins — no shroud to key or polarize, so the board layout must ensure the mating pair aligns correctly. The 0.135" solder post length is standard for a 1.6 mm thick PCB; the 0.230" mating tail reaches through the receptacle's insulation height of 0.100".
