Hirose DF40C-24DP-0.4V(58) — 24-Position, 0.40 mm Pitch Board-to-Board Plug
The Hirose DF40C-24DP-0.4V(58) is a 24-position plug with outer shroud contacts from the DF40 series, designed for board-to-board mezzanine stacking. The 0.016" (0.40 mm) pitch and dual-row layout pack 24 circuits into a narrow footprint that demands HDI board routing — the trace escape under the plug needs micro-vias or blind vias to keep the signal layers open.
Stack Height Flexibility Across Six Heights
This plug supports six mated stacking heights — 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, and 4 mm — by mating with the corresponding DF40 receptacle at different board-to-board distances. That range lets one plug cover multiple z-height budgets in a product family without requalifying a new connector for each board spacing. The 1.14 mm above-board height of the plug itself keeps the mated pair low enough for thin clamshell or handheld enclosures.