The Hirose BM28B0.6-16DS/2-0.35V(53) is a 16-position receptacle with center strip contacts, part of the BM28 series. It's a board-to-board mezzanine connector built for tight z-height budgets — the mated stack height is 0.6mm, and the height above the board sits at 0.024" (0.61mm). The 0.014" (0.35mm) pitch is the tightest constraint here: it drives the PCB footprint and rules out hand-soldering in production.
16 positions vs the 10-position sibling — same footprint class
The BM28B0.6-16DS/2-0.35V(53) shares the same 0.014" (0.35mm) pitch, 0.024" (0.61mm) height above board, and gold contact finish with the 10-position BM28B0.6-10DS/2-0.35V(53). The difference is 16 circuits against 10 — match the position count to your circuit count. Both use the same footprint class, so a board laid out for the 10-position version won't accept the 16-position without a layout change.