The 96-position backplane header that defines the signal-ground ratio
The TE Connectivity Impact 2057747-3 is a 96-position header, male pins, arranged in 6 rows of 16 columns at a 0.075" (1.91mm) pitch. This is the dense, high-speed backplane connector from the Impact series, with a contact layout of 64 signal and 32 ground paths — a 2:1 signal-to-ground ratio that gives each differential pair a dedicated return path without crowding the routing channels. The press-fit termination means the header is pressed into plated through-holes on the backplane, no solder required, which keeps the assembly rework-friendly and the contact interface gas-tight.
What the 0.075 A rating actually means for this connector
The 0.075A per-contact current rating looks low, but this is a signal connector, not a power interconnect. Each signal pin carries logic-level current — think differential pair lanes at a few milliamps. The 30V rating matches the signal voltage domain on a typical backplane.
Press-fit backplane assembly — no solder, no reflow
The press-fit termination eliminates the solder joint as a failure point. The compliant pin compresses as it enters the plated through-hole, cold-welding to the barrel wall.
The base product number is 2057747, and the full 12NC suffix defines the 96-position, press-fit, gold-plated variant. There is no official TE cross-reference or replacement — this is the active part number for the specification.
Mating half and build-to-print checklist
This header mates with the Impact-series right-angle receptacle (the female counterpart) that mounts on the daughter card. The 1.91mm pitch and 6-row grid are mirrored on the receptacle side. For a complete build-to-print BOM, you need the mating receptacle, the press-fit insertion tooling, and the backplane PCB with the correct plated through-hole pattern. The header ships in bulk packaging — no tape-and-reel, no carrier.