The Hirose FX2-40S-1.27SV(71) is a 40-position receptacle from the FX2 series, designed as a board-to-board interconnect with outer shroud contacts. The shroud surrounds the contact beams, providing mechanical protection during handling and guiding alignment during mating — useful when the connector pair is not directly visible during assembly. Surface-mount termination means this part goes through a reflow oven alongside other SMD components, eliminating the need for a separate wave-solder step.
The 40 positions are arranged in two rows, so the footprint uses a 20-per-row layout. Termination is solder-only, surface-mount; no press-fit option on this variant. The tray packaging suits panel or low-volume assembly lines where tape-and-reel feed is not required.