Board-to-Board Mezzanine Plug, 40 Positions, 0.80 mm Pitch
The connector is a plug with center strip contacts, arranged in two rows, and is surface-mount terminated for reflow assembly.
Stacking Height Versatility from One Plug
A single 5179029-1 plug supports four different mated stacking heights: 6 mm, 10 mm, 14 mm, and 18 mm. This flexibility means one BOM line covers multiple board-spacing requirements in a design, as long as the mating receptacle is selected for the target stack height. The 0.220" (5.59 mm) height above board of the plug itself is fixed; the overall stack is determined by the receptacle's height.
Contact Finish and Duty
It is not specified for high-wear applications like frequent field reconnections or for high-current power delivery where thicker gold or selective plating would be required.