What the 1.20mm Pitch and Shrouded Design Mean for Your Board Layout
The 10125839-04RAEHLF: This is a shrouded 4-wall receptacle, meaning the housing surrounds the contacts on all four sides to protect against mis-mating and bent pins.
Right-Angle SMT Mounting and Solder Retention
The connector is surface-mount, so it fits standard SMT pick-and-place assembly; the tape & reel packaging supports high-volume placement.
Contact Plating and Material Choices for Signal Reliability
The gold post finish at 2.00µin on the solder tail ensures a reliable solder joint and resists oxidation at the board interface.