Right-angle 12-pin header at 1.25mm pitch
The 1-1734829-2 is a 12-position, single-row, right-angle through-hole header from TE's High Performance Interconnect (HPI) series. It mates with a board-to-cable/wire receptacle at 1.25mm pitch, a common spacing for compact signal interconnects in automotive, industrial, and medical equipment.
How it compares to similar TE right-angle headers
The 1-1734829-2 offers one more circuit at a tighter pitch (1.25mm vs 2.00mm), which saves board space but reduces the per-contact current rating (1 A vs current varies by wire gauge on the CT). The CT series uses a detent lock; the HPI series does not specify a fastening type in the evidence. Compared to the 1376366-8 (8 positions, 2.20mm pitch, 5 A), the 1-1734829-2 carries fewer amps per circuit but fits more signals in the same board edge length — a trade-off between power density and signal density.