DF37B-60DP-0.4V(51) from Hirose Electric Co Ltd is a fine-pitch rectangular board-to-board connector designed for compact electronic assemblies where height, density, and stable interconnection matter. As part of the DF37 series, this 60-position, 2-row SMT header with 0.40 mm pitch and outer shroud contacts is well suited for portable devices, embedded control boards, industrial modules, and other space-constrained PCB stacking applications. Features such as gold contact finish and solder retention support dependable assembly and signal integrity in high-density designs. From a sourcing perspective, this part is supplied in tape-and-reel packaging for volume manufacturing. Lifecycle status is currently unknown based on the available data, so engineers should review current manufacturer guidance before locking it into long-term programs. RoHS compliance information is not explicitly provided in the supplied specifications; compliance should therefore be confirmed through the latest Hirose documentation or authorized supply-chain records before release to regulated markets.