Board Fit and Circuit Count
The 3-641215-2: The 2-circuit count matches low-signal or power-switch applications where only a pair of conductors need routing.
Mating Interface and Retention
Gold plating on the mating contact (30.0 µinch minimum) resists fretting corrosion through repeated connect-disconnect cycles. For a connector that sees quarterly field service, that gold layer supports hundreds of matings without contact resistance drift.
