DF36A-40S-0.4V(52) from Hirose Electric Co Ltd is a fine-pitch rectangular receptacle connector designed for compact board-to-cable interconnect applications where space savings, secure mating, and stable SMT assembly are important. With 40 positions on a 0.40 mm pitch, friction-lock retention, gold-plated contacts, and an LCP halogen-free housing, it is well suited for densely packaged consumer, industrial, and portable electronic designs. Engineers may consider this connector for display modules, compact control boards, miniature embedded systems, and cable-to-board interfaces that need reliable contact performance and solder retention features. Based on the supplied data, the part status is Active, which is favorable for ongoing designs, although the listed supply-and-demand condition is Limited, so procurement teams should monitor availability and plan buffer stock. RoHS compliance is not explicitly confirmed in the provided specifications, so compliance should be treated as information not available until verified through the official Hirose datasheet or manufacturer documentation.