Backplane Header for 40 Differential Pairs
The Molex 761559107 is a 120-position header in the Impact 76155 series, laid out as 12 rows by 10 columns on a 0.053" (1.35mm) pitch. It is the male pin half of a high-density backplane interconnect, carrying 40 differential signal pairs per connector. The Guide Right keying feature uses mechanical alignment pins to prevent cocked or reversed mating, which is the most common field failure in blind-mate backplane assemblies.
Press-Fit Termination — What It Means for Assembly
Press-fit termination means the compliant pin is pressed into a plated through-hole on the backplane — no wave soldering, no hand-solder touch-up. The through-hole mounting keeps the header mechanically anchored to the board. The UL94 V-0 housing handles the enclosure flame-rating requirement for telecom and server equipment.