The 5-146131-4: It's a breakaway design — the pin strip can be snapped to shorter lengths if needed, though this part ships with all 10 positions loaded.
Board-fit and routing details
The 2.54mm pitch sets the PCB footprint — standard 0.025-inch square pins on a 0.100-inch grid. The SMT tails are tin-plated (100 µinch) for solderability, and the 2.29mm insulation height leaves clearance for trace routing under the header. The unshrouded design means the mating receptacle's housing provides the alignment; the header itself offers no polarisation keying, so the board layout must ensure correct orientation during assembly.