0.50 mm Pitch, 40-Position Mezzanine Receptacle
It uses a 0.020" (0.50mm) pitch in a 2-row arrangement, with center strip contacts.
Footprint and Routing Constraints
At 0.50 mm pitch, the PCB land pattern demands fine-line capability — trace escape between pads typically requires 0.25 mm or narrower traces with 0.25 mm clearance, which is standard for most HDI-capable board shops but may push a basic 4-layer stack-up. The surface-mount termination and solder retention feature mean the part self-aligns during reflow and resists tombstoning, but the fine pitch leaves little room for hand-solder rework.
The base product number is 5353512, which covers the family; this specific variant is the 40-position, 1.20mm height, tape-and-reel packaged version.