Board-fit and orientation for the 966140-6
The 966140-6 is a 21-position, 3-row header on a 5.00 mm pitch — the row spacing is 5.51 mm, so the footprint spans roughly 17.5 mm across the board edge.
Automotive-class latch and housing
The glass-filled PA66 housing is rated from -40°C to 100°C, which covers the underhood thermal profile for most passenger vehicles.
Tin contacts and mating cycle budget
The mating contacts are tin-plated — this is the standard choice for a connector that is mated once during harness assembly and rarely disconnected in service. Tin is rated for roughly 50 mating cycles; if the application requires frequent field disconnect (quarterly or more), consider a gold-plated sibling in the MCP family to avoid contact fretting.