The unshrouded design means the pins are exposed — this keeps the profile low (0.100" insulation height) and the overall contact length at 0.525" (13.34 mm), with a mating length of 0.318" (8.08 mm) and a post length of 0.107" (2.71 mm) for the solder tail. The 0.100" insulation height allows tight board-to-board spacing when mated with a low-profile receptacle. Typical applications include backplane interconnects, peripheral card headers, and any board-to-board or wire-to-board signal distribution where a high pin count in a standard pitch is needed.
The base product number 67998 covers the series, and the -452HLF suffix specifies the 52-position, dual-row, tin-plated variant with a 0.107" post length.
The 52 positions are fully loaded (all positions populated), so the mating connector must also be a 52-position dual-row. Common mates include the BERGSTIK II receptacle or any industry-standard 2.54 mm pitch socket strip. Termination is through-hole solder — the 0.107" (2.71 mm) post length is designed for standard PCB thicknesses (typically 0.062").