14 Positions at 4.00mm Pitch — Sealed for Automotive and Industrial Duty
The 776261-1 is a 14-position, 3-row header from the TE AMPSEAL series, built for board-to-cable/wire connections in environments that see moisture and vibration.
What the Tin-Plated Contact Finish Means for Field Service
The male pins are tin-plated brass. Tin is the workhorse finish for moderate mating-cycle applications — it costs less than gold and holds up well in dry-circuit signal duty as long as the contact normal force is high enough to wipe through the surface oxide on each mate. In a sealed connector that sees quarterly service, the tin interface will outlast the harness. If the application cycles the connector weekly or runs in a corrosive atmosphere, a gold-plated sibling like the 1318699-3 (4.20mm pitch, gold flash) is the better call, though the pitch difference means a board layout change.
This header mates with the AMPSEAL receptacle series (same 4.00mm pitch, 14-position, 3-row cavity layout).