Board fit and circuit count
The 8-188275-2: This 12-position dual-row receptacle on 2.54 mm pitch defines the board footprint — each row spaced at the same 2.54 mm, so the overall width is roughly 12.7 mm across the contact pattern. The forked contact geometry provides a compliant beam that wipes the header pin on insertion, maintaining contact pressure through thermal cycling.
Tin plating and temperature range
Tin-on-tin mating finish keeps the per-contact cost low but limits the connector to moderate reconnect duty — typically 25–50 mating cycles before fretting corrosion raises contact resistance. In a harness that is assembled once and rarely disconnected, tin is the right call.