The 1-2106431-4: It uses a single row of contacts on a 4.00 mm pitch, matching both the cable spacing and the board-side footprint. The natural-colour housing and tin-plated contacts keep the assembly cost down for applications that don't need high mating-cycle endurance or corrosion resistance.
Wiring and Termination — IDC for Discrete Wires
No crimp tool, no stripping. The feed-through feature means the wire passes straight through the connector body, which simplifies daisy-chaining or passing a wire to another point.
Board Layout and Assembly
The surface-mount, right-angle termination requires a reflow solder profile compatible with the tin-plated contacts. The 4.00 mm board-side pitch matches the cable pitch, so the footprint is straightforward — four pads in a row at 4.00 mm centres. The connector is supplied in Tape & Reel for automated placement, or Cut Tape for manual or low-volume assembly.