Obsolete — sourcing path for this 40-pin DF12 header
The DF12D(4.0)-40DP-0.5V(81): For a BOM line that needs this exact order code, we source against an RFQ from available inventory or qualified broker channels.
40 circuits at 0.50mm pitch, 4mm stack height
This is a 40-position, dual-row header with 0.50mm pitch and a mated stacking height of 4mm — the (4.0) in the order code directly specifies the stack height. The connector type is Header, Outer Shroud Contacts — it mates with the corresponding DF12 receptacle (the female half) to form a board-to-board connection.
Surface mount, gold plating, board guide
Mounting is surface mount only; the header includes a board guide feature to aid alignment during reflow assembly.