The 5-146282-3: This is a 3-position, single-row breakaway header from the AMPMODU Mod II series. It connects board to board or cable via an unshrouded male pin interface — the breakaway construction lets you snap individual positions off for custom pin counts, though this part ships fully loaded with all 3 positions.
The 0.090" insulation height means the header sits low on the board — useful when z-height is tight. The square pins (0.025" square typical for AMPMODU Mod II) mate with standard crimp receptacles or IDC sockets.
The LCP housing handles reflow soldering temperatures without distortion. No IP rating — this is an unsealed header for dry, sheltered environments.