2.50 mm pitch, 7-position right-angle header with latch holder
The 171826-7: This is a 7-position, single-row header from the TE EI series, pitched at 0.098" (2.50 mm) — a common spacing for wire-to-board interconnects in control and appliance wiring.
Each tin-plated brass contact is rated 2 A. That current is typical for signal-level circuits — think sensor inputs, low-power I/O, or control lines — not a power bus. The voltage ceiling is 250 VAC or 350 VDC, set by the PA66 insulation system. The single-wall shrouding guides the mating connector on one side but leaves the opposite side open — useful when the wire exit needs to clear a nearby component or board edge.
The closest peer in the evidence is the 1376366-8, an 8-position header at 0.087" (2.20 mm) pitch, also right-angle with a latch holder and tin plating. The 171826-7 runs a wider 2.50 mm pitch and carries 7 positions instead of 8 — the wider pitch gives more room between solder tails on the PCB, which helps routing density on a single-layer board.