1.50 mm pitch and right-angle SMT — board-fit decisions
The 5031481271: The 1.50 mm pitch sets the board footprint for a dual-row, 12-position receptacle — the PCB layout needs one pad per contact on 0.059-inch centres, which is tight enough to demand a controlled impedance stack-up if you're routing differential pairs through the connector.
Current and voltage — signal-level interconnect ceiling
The 1 A limit per circuit means each contact stays within its temperature rise budget at the 39.4 µinch tin-plated mating interface.
Mating and termination — what it connects to
Termination is solder to the board — the SMT pads are held in place during reflow by the solder retention feature, and the pick-and-place pad on top lets the assembly robot handle it without dropping it.
ROHS3 compliant — the tin plating and nylon housing meet the current exemption-free restriction levels. No stock-holding claim; confirmed at RFQ time.