20-Position Breakaway Header with Keying
The 77314-802LF: Nineteen positions are loaded — one pin is omitted to create a polarization key that prevents mis-mating with a standard 20-position socket strip.
Through-hole termination with a solder post length of 0.120" (3.05 mm) — this is the portion that passes through the PCB and is soldered. The contact finish on the solder post is tin (78.7 µinch / 2.00 µm), which wets well during wave or hand soldering and is compatible with lead-free processes. The square pin shape (0.025" square typical for this series) fits standard 0.025" square-post receptacles.
The base product number is 77314, which covers the 20-position dual-row breakaway header family. The -802LF suffix denotes the specific plating and loading variant: gold GXT™ mating finish, tin post, 19 positions loaded.