Right-angle 3.81mm pitch with full shroud and board lock
The 1-178137-2: This is a 6-position, 2-row header from TE's Dynamic D-3100 series, on a 0.150" (3.81mm) pitch with a 0.300" (7.62mm) row spacing. Torque it, then scan it — a loose joint runs hot, and the board lock keeps the header planted so the solder joint doesn't take the mechanical load.
Gold mating surface and temperature range for industrial duty
That thickness supports repeated mating cycles — field-service gear that sees periodic disconnect/reconnect won't fret the interface. Rated 250V, the header suits signal and low-power distribution inside a cabinet.
The closest peer in the Dynamic D-3100 family is the 1-1871673-2, a 4-position header on a tighter 0.098" (2.50mm) pitch with tin-plated mating contacts. The 1-178137-2 gives you two more circuits, a wider pitch (3.81mm vs 2.50mm), and gold on the mating interface — better for applications that need higher mating-cycle life or a larger routing channel. If you need a vertical through-hole version, the 1376779-2 is a 2-position header with 8.00 µin gold — half the gold thickness of the 1-178137-2. For a 4-row, latch-lock option, the 1318699-3 offers 12 positions on a 4.20mm pitch with circular pins.