Obsolete — Sourcing Reality for the DF12E(4.0)-30DP-0.5V(81)
The Hirose DF12E(4.0)-30DP-0.5V(81) is listed as obsolete, meaning Hirose no longer manufactures this exact order code.
What This Connector Is — DF12 Series Board-to-Board Header
The Hirose DF12E(4.0)-30DP-0.5V(81) is a 30-position header from the DF12 series, designed for board-to-board parallel stacking. The connector stands 0.130" (3.30mm) above the board and achieves a mated stacking height of 4mm when paired with the matching DF12 receptacle. This geometry suits tight z-height budgets in portable electronics, handheld instruments, and other space-constrained assemblies where two PCBs need a reliable signal interconnect.
Board Layout Fit — Pitch, Stack Height, and Footprint
The 0.50mm pitch drives the board layout — the SMT pads are closely spaced, so the PCB fab must handle fine-pitch registration and solder paste deposition. The 30 positions across two rows give 15 contacts per row, which sets the footprint length at roughly 7.5mm plus keep-out. Gold plating at 8.00µin on the contacts provides corrosion resistance for the expected mating cycle count in consumer and industrial environments — adequate for assembly and occasional rework, not for high-cycle field service.