The 4-103322-0-21: The dual-row, 42-position layout occupies a 2.100" row length, with 0.100" row spacing, so the keep-out zone on the board is predictable. Unshrouded breakaway design means the header can be snapped to shorter lengths if the full 42 positions aren't needed — useful for prototyping or BOM flexibility where a single part covers multiple circuit counts.
Current and Temperature Handling
The 100 µinch tin-lead finish on both the mating face and the post is a signal-grade plating — adequate for moderate mating cycles (50-100 cycles typical) in a controlled environment.
Production and Sourcing Status
The base product number 103322 covers the series; the full 4-103322-0-21 suffix specifies the 42-position, tin-lead, through-hole variant. Bulk packaging.