What this connector is
The 66527-012LF: Rated 1250V with an operating window of -65°C to 125°C, it sits further up the voltage ladder than most 2.54mm pitch headers — that headroom covers industrial automation backplane logic and telecom infrastructure bus rails where the same footprint serves multiple voltage domains. The contact plating splits the job: gold on the mating face at 30.0 µin (0.76 µm) for repeatable engagement resistance and cycle life, tin on the solder tail at 100.0 µin (2.54 µm) for solder-wetting margin and shelf stability before assembly. Brass substrate runs through the full contact length.
What it is used for
Dubox targets board-to-board interconnects in automotive control modules, industrial PLC I/O, and telecom infrastructure cards — applications where the 2.54mm pitch is an established footprint, the 1250V rating clears the insulation bulk required in higher-voltage industrial logic, and the wide temperature range covers engine-adjacent or outdoor equipment environments.
Sourcing and lifecycle
Active lifecycle — quoted to order against BOM quantity. No official successor or cross-reference is listed for this position count in the Dubox series. Confirm the 24-circuit position count matches the target board layout before committing; a lower-position variant in the same series will not be pin-compatible at all positions.
Mating half
Mates with the corresponding Dubox dual-row pin header in the same series — the male pin header at the matching 24-position / 0.100-inch pitch configuration. All 24 positions are loaded. The push-pull receptacle accepts the pin header on insertion; there is no positive latch — verify the application's vibration and shock profile does not back-drive the contacts.