The 5-103904-4: The 4-wall shrouding protects the pins from accidental bending and guides the mating half into alignment, reducing the chance of mis-mate damage. A board lock on the bottom holds the header in place during wave soldering, and the keying slot prevents inserting the wrong mating connector — both useful in production and field service.
Ratings that matter for the fit
Rated 3 A per contact, which is typical for signal-level headers in this pitch class.
Sourcing and compliance check
Current pricing and lead time are confirmed at quote time.