DF36A-25S-0.4V(51) from Hirose Electric Co Ltd is a compact DF36 series rectangular receptacle connector designed for high-density board-to-board interconnect applications where space savings and reliable signal transfer are important. With 25 positions, surface-mount termination, and gold contact finish noted in the supplied specifications, this part is well suited for portable electronics, compact industrial modules, embedded control boards, and other designs that require fine-pitch connectivity in constrained layouts. As a connector in the Connectors, Interconnects > Rectangular Connectors category, it fits applications that prioritize mechanical stability, repeatable assembly, and signal integrity in miniaturized systems. Lifecycle status is currently listed as unknown, so engineering and procurement teams should verify long-term availability directly with Hirose or authorized sources before committing to new production designs. RoHS compliance information is not explicitly provided in the supplied data, so compliance should be confirmed through the official datasheet, manufacturer declaration, or distributor documentation before use in regulated markets.