Right-angle footprint for tight board stacks
The 3-641121-3: This MTA-156 header seats three male pins in a single row at 0.156" (3.96mm) pitch, with the solder tails bent 90° so the connector body lies flat against the board surface. The shrouded one-wall design guides the mating housing into alignment and the friction lock clicks into the latch window — you should hear it seat before you let go of the cable.
