Board Layout and Fit for a 2-Position 3.81mm Header
The mating flange adds a mechanical lock to the plug, reducing the chance of vibration loosening the connection.
Mating and Terminal Block Compatibility
The vertical orientation means the plug enters perpendicular to the board; the mating flange secures the pair. Tin-on-tin contact interface is typical for this class of terminal block; expect a few hundred mating cycles before contact resistance drifts.
