Backplane Header for 40 Differential Pairs
The Molex 761551114 is a 120-position header from the Impact 76155 series, laid out as 10 columns by 12 rows to carry 40 differential pairs. The 0.053" (1.35 mm) pitch packs the signal density needed for high-speed backplane routing without forcing an oversized card edge. Press-fit compliant pins terminate into plated through-holes — no solder means the assembly stays clean and rework stays straightforward.
Press-Fit Assembly and Board Fit
This is a through-hole header, but the press-fit termination means the pins are pressed into the board rather than soldered. The 12-row, 10-column grid at 0.053" pitch creates a dense footprint — the board layout needs the correct plated hole diameter and anti-pad clearance for the press-fit zone. Rated for a 30 V operating envelope with UL94 V-0 housing, it fits standard telecom and datacom backplane environments where the card cage provides the mechanical retention.