Board-to-Board Fit and Mating Half
The 20021111-00010T1LF: This is a 10-position, 2-row unshrouded header on 1.27 mm pitch — the same footprint used by standard 1.27 mm IDC socket connectors and Minitek127 receptacles. For higher cycle counts, the 20021111-00010T4LF sibling carries 10 µinch gold on the mating contact.
Comparing the Gold Flash vs Thicker Gold Variant
The 20021111-00010T4LF is the same 10-position, 1.27 mm pitch header but with 10 µinch gold on the mating contact instead of flash.