MTA-100 5-Position Vertical Header with Friction Lock
The 640456-5 is a single-row, 5-position vertical header from TE's MTA-100 series, pitched at 0.100" (2.54mm) — the legacy standard for discrete-wire board-to-cable interconnects. The through-hole solder tails are tin-plated, matching the tin-on-tin contact interface that suits moderate mating-cycle duty in indoor equipment.
The 0.100" pitch sets the PCB footprint: a 5-position single-row header needs five through-holes on 2.54mm centers, with the 0.140" (3.56mm) post length designed for standard 1.6mm-thick boards. The shrouded-1 wall on the header guides the receptacle alignment but leaves three sides exposed; in high-vibration environments, the friction lock alone may not prevent back-out without additional strain relief on the cable. For a harness that mates once during assembly and stays mated, the tin-on-tin interface is adequate and cost-effective.
Peer Comparison: 640456-5 vs 1-292164-1
The closest functional peer is the 1-292164-1, an 11-position CT series header with a 0.079" (2.00mm) pitch and a shrouded-4 wall design. The 640456-5 carries 5 positions at 2.54mm pitch with a single-wall shroud; the 1-292164-1 offers more circuits in a denser footprint but uses a detent lock instead of a friction lock. Both are active, tin-on-tin, through-hole headers for board-to-cable duty, but they are not pin-compatible — different pitch and position count require a board layout change.