What this mezzanine header does
The DF12B(5.0)-60DP-0.5V(86): This is a 60-position, dual-row header from Hirose's DF12 series, pitched at 0.50mm and designed for a 5mm mated stack height — a common spacing for compact mezzanine boards in portable electronics and telecom modules.
Obsolete — sourcing path
Hirose has marked this part as Obsolete. No direct successor is listed in the DF12 series, so the BOM position needs a pin-compatible alternative or a last-time buy.
Surface-mount termination with a 0.50mm pitch demands careful trace fan-out — a 60-position dual-row layout on a 5mm stack height leaves limited room for vias between pads. The 0.169" (4.30mm) height above board and 5mm mated stack height set the z-axis clearance between stacked PCBs.
