DF3-4P-2DSA(01) from Hirose Electric Co Ltd is a 4-position rectangular header designed for board-to-board or cable interconnect use in compact electronic assemblies. With a 2.00mm mating pitch, shrouded 4-wall construction, push-pull fastening, and male pin contacts, it is well suited for control boards, industrial devices, consumer electronics, and embedded systems that need stable signal and power connectivity in a compact footprint. Its 3A current rating, UL94 V-0 polyamide insulation, and -55°C to 105°C operating range make it a practical choice for designs exposed to broad environmental conditions. The part is listed as Active in the provided specifications, which is a positive indicator for ongoing design support, although engineers should still confirm long-term supply plans with Hirose or authorized sources. RoHS compliance information is not explicitly provided in the supplied data, so compliance status should be treated as information not available pending official manufacturer documentation.