DF37C-60DP-0.4V(51) from Hirose Electric Co Ltd is a fine-pitch board-to-board rectangular connector designed for compact electronic assemblies that need reliable mezzanine interconnection in a very low-profile format. With 60 positions, dual-row layout, surface-mount termination, and 0.40 mm pitch, it is well suited for portable devices, industrial control modules, embedded computing boards, and other space-constrained designs where signal density and stack height matter. As part of the DF37 series, this connector is positioned for engineers seeking a proven interconnect option from a major connector manufacturer rather than a commodity substitute. The listed product status is Active, which supports consideration for ongoing production programs, although lifecycle planning should still be confirmed through current manufacturer channels. RoHS compliance information is not explicitly provided in the supplied specifications, so compliance status should be treated as information not available until verified through the official datasheet, manufacturer declaration, or authorized distributor documentation.