The 66506-050LF: This is a 20-position, 2-row shrouded header from the Quickie™ series, designed for board-to-cable IDC ribbon applications. A keying slot prevents mismating with non-keyed receptacles.
Board Footprint and Termination
All 20 positions are loaded. The dual-row layout with 0.100" row spacing means the header occupies a 0.200" x 1.000" board footprint plus the shroud overhang.