It uses a DE-1 (E) shell size — the standard footprint for 9-pin D-subs — so it drops into any board layout that expects a DE-9 pattern.
Contact Plating and What It Buys You
The solder tails are tin, so the board joint is standard lead-free reflow or wave compatible.
Ratings That Drive the Fit
Rated 6A per contact at 125V, which is typical for a 9-position size — enough for signal-level power or moderate-current I/O, but not a bus bar. The 4-40 threaded flange on the housing (standard UNC 4-40) mates with any D-sub backshell or jackscrew that uses that thread — a common question when matching cable assemblies.
The 5745394-2 ships in a tray. The two functional peers — 3-1393480-8 (Box packaging) and 8-1437045-3 (Bulk) — are electrically and mechanically identical: same 9-position DE-1 layout, same 30.0µin gold, same 6A/125V rating. The only difference is how they arrive on the line. If your pick-and-place or kitting prefers a specific package, that's the selector; otherwise the part is the same.