DF37B-20DP-0.4V(53) from Hirose Electric Co Ltd is a fine-pitch board-to-board mezzanine connector designed for compact electronic assemblies where space, alignment, and reliable interconnection are critical. As a 20-position, 2-row surface-mount header with 0.40 mm pitch and outer shroud contacts, it is well suited for portable devices, industrial control modules, embedded systems, display assemblies, and other high-density PCB designs. Gold contact finish and solder retention support dependable mating and assembly performance in miniaturized products.

Within the Connectors, Interconnects > Rectangular - Board to Board Connectors - Arrays, Edge Type, Mezzanine category, this part fits applications that require low-profile stacking and signal routing between parallel boards. The listed supply and demand status is Limited, so procurement planning is advisable for ongoing production. Lifecycle status is currently information not available, and engineers should confirm long-term availability directly with Hirose or authorized sources. RoHS compliance information is also not explicitly provided in the supplied data, so official manufacturer documentation should be checked before release to regulated markets.