72-Position Impact Header, Guide Left, Press-Fit
The TE Connectivity 2149979-3 is a 72-position header from the Impact backplane connector family, arranged in 6 columns with a guide-left keying feature. This is the male pin half of a differential-pair backplane interconnect system, terminated via press-fit compliant pins that press into plated through-holes without solder.
Press-Fit Termination for Backplane Assembly
Press-fit termination means this header is designed for solderless assembly into a backplane PCB. The compliant pin eyelet compresses as it enters the plated through-hole, creating a gas-tight mechanical and electrical connection. This avoids the thermal stress of wave or reflow soldering on a large, multi-layer backplane board. The through-hole mounting type is standard for backplane connectors where the header is inserted from the top side and the compliant tail engages the inner-layer vias.
72 Circuits, 6 Columns — Footprint and Routing
72 positions loaded across 6 columns. All positions are loaded.