Pitch, Positions, and Mating Half
The 1-1971906-5: The 3.30mm pitch sets the board footprint — each pin centre is 3.30mm from the next in the row, with a row-to-row spacing of 5.20mm. The mating receptacle is a Grace Inertia (GIC) series housing that accepts the corresponding crimp terminals; the latch holder on this header clicks into the receptacle's locking feature.
Current Rating: It Depends on the Wire
For a given wire gauge, the terminal's current-carrying capacity and the temperature rise inside the housing define the limit. The UL94 V-0 glass-filled nylon housing handles the heat, but the derating curve for the chosen terminal must be checked against the 105°C upper operating limit.