0.50mm Pitch Mezzanine Receptacle, 50 Positions
The Hirose DF17(4.0)-50DS-0.5V(57) is a 50-position receptacle with center strip contacts from the DF17 series, designed for board-to-board mezzanine stacking. Its 0.020" (0.50mm) pitch and dual-row layout pack 50 circuits into a compact SMT footprint — the tight pitch drives the PCB trace-and-space rules, not the position count. Gold-plated contacts on both mating surfaces suit repeated mating cycles in a corrosive-free environment, typical of internal mezzanine links in portable electronics, camera modules, and display driver boards.
Stack Height Selection: 6mm, 6.5mm, or 8mm
This single receptacle supports three mated stacking heights — 6mm, 6.5mm, and 8mm — depending on the mating plug height variant chosen. That flexibility lets one board layout serve multiple enclosure z-height budgets without a footprint change. The 0.177" (4.50mm) height above board is the receptacle's own standoff; the total stack comes from the plug side.
Board-Guide and Solder Retention Features
Position Count Comparison: 50 vs 60 Circuits
The 50-position DF17(4.0)-50DS-0.5V(57) shares the same 0.020" (0.50mm) pitch, 4.50mm height above board, and gold-plated SMT construction with the 60-position DF17(4.0)-60DS-0.5V(57). If the BOM calls for 60 circuits, the 60-position sibling is a direct drop-in on the same pad layout; if 50 circuits fit, this is the correct match.