Socket identity and mechanical fit
The 1-2199298-6: The open-frame design lets air circulate under the IC, which helps with heat dissipation in sockets carrying near-rated current.
Current, contact resistance, and plating
Mating surface is tin plated to 60 μin (1.52 μm) — that thickness gives good corrosion resistance for moderate mating cycles (50-100 mates) in indoor environments, but for high-cycle or corrosive-duty applications you'd want a gold-plated sibling.
RoHS3 compliant, so it fits assemblies shipping into EU or RoHS-regulated markets without exemption paperwork.
