The 0.40mm pitch packs 80 circuits into a 2-row footprint, making it a high-density solution for compact handheld or portable equipment.
Stack Height Flexibility from One Header
This header supports six discrete mated stacking heights: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, and 4mm. The height above board is fixed at 1.14mm, so the z-height budget is set by the mating receptacle. A single 10164228-0801A1RLF line item on the BOM covers multiple board-spacing variants — the designer picks the receptacle with the right standoff for the gap. That is useful when the same mainboard stacks with different daughtercards at different heights.
Surface Mount Assembly and Packaging
Surface mount termination suits automated pick-and-place lines. The 0.40mm pitch means the PCB land pattern needs tight registration — the solder paste stencil aperture and reflow profile should match the manufacturer's recommended footprint to avoid bridging between rows.