4-Position IDC for 18 AWG — SMT Right-Angle Termination
The TE 2106431-4 is a 4-position wire-to-board IDC connector for 18 AWG discrete wires, terminated to the cable via insulation displacement and soldered to the board through a surface-mount, right-angle footprint. It belongs to the 2106431 base series, sharing the 4.00 mm cable and board-side pitch that keeps the wire spacing aligned with the PCB land pattern — no pitch mismatch between the cable exit and the solder pads. The natural housing carries a feed-through feature that lets a daisy-chain wire pass through the connector body without terminating at this position, useful for distributing a common signal or power rail across multiple connectors in a harness.
Termination and Harness Assembly
IDC termination on 18 AWG wire requires a proper press tool that drives the insulation-displacing slot through the jacket and onto the conductor — no wire stripping or crimping. The feed-through feature lets the installer pass a continuous wire through the connector body; the IDC slot only contacts the wire at the position where the terminal is pressed, leaving the rest of the wire uninterrupted for the next connector in the chain. Single-row, 4-position layout keeps the termination force per wire manageable with a hand tool, though a pneumatic or bench press is recommended for consistent slot penetration across all four positions.