1.25mm pitch, 12-position SMT header with latch holder
The 2077601271: This is a Molex Micro-Lock PLUS 207760 series header, 12 positions in two rows, at 1.25mm pitch — the tightest pitch in the Micro-Lock family, which means the board footprint saves real estate compared to the 2.00mm Micro-Lock alternatives. The shrouded 4-wall design and latch holder keep the mated pair locked under vibration, and the solder retention tabs hold the part flat during reflow so you don't lose coplanarity on the pick-and-place line.
Tin-bismuth contacts and current derating
At 1.25mm pitch, expect per-contact current in the 1-2A range with 28-30 AWG wire; the UL94 V-0 nylon housing handles the heat.
Mating half and pinout
The mating connector is a Micro-Lock PLUS receptacle housing (part numbers in the 207760 series, such as 207760-1271 for the plug assembly). Pinout is straightforward: 12 positions, all loaded, dual-row — row A pins 1-6, row B pins 7-12.