Right-Angle 4-Pin Header for MTA-100 Wire-to-Board
The 3-644457-4: That covers most indoor industrial gear, test equipment, and consumer electronics — anything inside a conditioned enclosure that doesn't see engine-bay heat.
Sourced through independent distribution channels.
How It Compares to Similar Headers
That part adds vibration-resistant shrouding and a detent lock — useful if the mating cable sees constant flex or the board is in a high-shock environment. The trade-off is a wider footprint and a different pitch (0.098" vs 0.100"), so the board layout is not drop-in compatible. The 953440-3 is an automotive-grade 6-position shrouded header on the same 0.100-inch pitch but with a friction lock and mounting flange. It's rated 12V — fine for a 12V automotive bus, but not for a 250VAC line. The MTA-100 header is a better fit for general-purpose AC applications.
Mating and Termination Notes
Termination is through-hole solder. The 0.110-inch post length is typical for a standard PCB thickness; the 150 µinch tin finish on the post wets well with leaded or lead-free solder. No press-fit or SMT option here — it's a straight solder-and-cut assembly.