The Amphenol 79821-102HLF is a 2-position, dual-row unshrouded header from the BERGSTIK® II series, designed for board-to-board interconnects on a standard 0.100" (2.54 mm) pitch. It carries male square pins with a 30.0 µ" (0.76 µm) gold or Gold, GXT™ mating finish, rated for 5 A per contact at 110 V.
The 0.100" (2.54 mm) row spacing and 0.100" pitch are the standard footprint for BergStik and compatible IDC socket strips — the PCB layout matches a generation of ribbon-cable and board-stacking receptacles. The unshrouded body means there is no keying ramp — the mating receptacle relies on board alignment, not connector polarization.