The 5-146130-3: The gold mating finish (30 µinch over nickel) handles repeated connect-disconnect cycles without the fretting that tin contacts show in low-voltage circuits.
Board layout and SMT termination
Surface-mount solder tails let this header sit flush on the PCB without through-holes, freeing the opposite side for routing. The header mates with any AMPMODU Mod II receptacle on the same 0.100" grid—unshrouded, so the board edge or a mating housing provides the alignment.
Peer comparison: shrouded vs unshrouded
That part trades position count and gold plating for a locking shroud and board retention; the 5-146130-3 gives you 8 positions, gold contacts, and SMT termination for a lower-profile board-to-board or cable interconnect.
