Board-to-Board or Cable: What This 16-Pin Header Does
The 4-103322-0-08: The 2.54 mm pitch matches the standard 0.100-inch grid, so the footprint aligns with common prototyping boards and production PCBs. The unshrouded design leaves the square pins exposed — you get a low-profile connection but lose the polarisation key, so the mating receptacle needs manual alignment during assembly.
Current and Contact Finish: What the 3 A Rating Means
At 100.0 µinch thickness, the plating provides a solid barrier against oxidation during storage and soldering — the tin-lead alloy wets well in leaded solder processes. The 3 A ceiling is typical for a signal header at this pitch; pushing beyond that raises the temperature rise above the thermoplastic housing limit (UL94 V-0). For a harness carrying low-current signals or control lines, this connector fits without derating at room ambient.
Through-hole solder termination — the 0.125-inch (3.18 mm) post length gives enough standoff for the solder fillet on a standard 1.6 mm board.