Its 0.156" (3.96mm) pitch matches the standard MTA-156 receptacle footprint, and the 4-wall shroud protects the male pins during mating and handling. The friction lock provides a positive retention with the mating housing without needing a separate latch or screw, which simplifies field assembly and reduces the chance of accidental disconnection under vibration.
Pitch, shroud, and lock — the fit details
The 0.156" pitch is the key board-layout dimension — it sets the hole spacing for the through-hole solder tails. The 0.125" post length and 0.300" mating pin length define the stack height when mated with a standard MTA-156 receptacle. The 4-wall shroud fully encloses the pins, which prevents bent contacts during blind mating and protects against accidental shorting. All 3 positions are loaded, so there are no empty cavities — the header is ready for a full 3-circuit harness.
Current rating and plating — what the numbers mean for your circuit
This thickness provides good corrosion resistance and supports moderate mating cycles typical of field-serviceable wire-to-board connections.