SMT footprint and automated assembly fit
The 20021121-00008C4LF: This is an 8-position, dual-row header on 1.27 mm pitch — the board footprint is compact, with 0.050" row spacing, and the surface-mount termination with Pick and Place feature means it runs straight through a standard reflow oven without hand placement. The unshrouded push-pull fastening suits board-to-board stacking where the mating receptacle provides the alignment, not the header shroud.
The 8-position (20021121-00008C4LF) sits between the 6-position (20021121-00006C4LF) and 4-position (20021121-00004C4LF) siblings — same pitch, same gold mating finish, same 1 A rating, same SMT package. A functional second-source alternative within the same base number is the 20021121-00008C1LF, which differs only in the mating contact finish thickness (Flash vs 10.0 µinch) — the footprint and pinout are identical.