Board-to-board fit for 5 mm mezzanine spacing
The DF12E(5.0)-20DP-0.5V(81) is a 20-position, 0.50 mm pitch header from Hirose's DF12 series, designed for a mated stacking height of 5 mm. The outer shroud contacts and 2-row layout suit parallel board stacking in compact handheld or portable equipment where the board-to-board gap is tight.
Sourcing this obsolete Hirose header
No official successor is listed in the DF12 series. For a pin-compatible replacement, the closest active member would share the 0.50 mm pitch, 20 positions, and 5 mm stacking height, but the exact order code variant (including the (5.0) stack-height suffix and (81) plating code) must be verified against the mating half.