The 280372-2: Six positions in a single row keep the connector narrow, which helps when you're squeezing it between components on a tight board edge.
Shrouded Housing and Detent Lock — Fit for Vibration
The 3-wall shroud surrounds the pins on three sides, guiding the mating receptacle and preventing bent pins during blind-mate assembly. The detent lock clicks into the mating half's latch window — it won't back out under moderate vibration, though for high-shock environments you'd want a latch holder or secondary lock.
RoHS compliant.
How It Stacks Against a Peer — 1394090-1
The 280372-2 is vertical, 3-wall, detent-lock, with gold on the mating side. If your application needs the stronger latch and right-angle orientation, 1394090-1 is the alternative — but the tin mating surface limits it to fewer mating cycles (typically 50-100) compared to the gold on this part.