The Hirose BM29B0.6-24DS/2-0.35V(53) is a 26-position receptacle with center strip contacts, part of the BM29 series. The 0.014" (0.35 mm) pitch allows high-density routing on the PCB, while the dual-row layout with 24 signal positions and 2 dedicated power positions handles mixed-signal and power delivery in a single connector body. Gold plating on the contacts (1.97 µin) suits repeated mating cycles in compact consumer electronics, handheld devices, and internal module interconnects where z-height is at a premium.
The 0.35 mm pitch is the tightest parameter on this connector — it dictates the PCB land pattern and the trace escape routing between pads. At this pitch, a standard 2-layer board may struggle to route all 26 signals without vias; a 4-layer stack-up with microvias is typical. The height above board is 0.024" (0.61 mm), and the mated stacking height is 0.6 mm, meaning the connector sits nearly flush with the board surface.
The BM29B0.6-24DS/2-0.35V(53) carries 26 positions (24 signal + 2 power). The sibling BM29B0.6-6DS/2-0.35V(51) carries 8 positions (6 signal + 2 power) at the same 0.35 mm pitch, same 0.6 mm stack height, and same gold plating thickness. The decision between them is purely a position-count match to the BOM circuit count — the footprint scales linearly, and the power contact pair is identical. If your design needs fewer signal lines, the 8-position variant avoids unused pins and saves board area.