The 90122-0778: This is a 36-circuit, dual-row breakaway header from the Molex C-Grid III 90122 series. Rated for automotive and general-purpose use, the header carries a UL94 V-0 glass-filled polyester insulation body, which holds up to the flame-rating requirements of equipment inside an enclosure.
Solder termination with a 0.114" (2.90mm) post length gives enough through-hole depth for standard 1.6mm PCBs. The post is tin-plated at 118.1 µinch (3.00 µm) — this is the solder-joint side, where tin ensures good wetting.
Gold Mating Finish for Moderate-Cycle Reliability
Fifteen microinches of gold is the entry-level thickness for applications that see occasional mating cycles — think field-service swaps or test-fixture connections — where the gold prevents oxide buildup on the pin surface. The square male pin shape with a 0.266" (6.75mm) mating length provides a standard interface for C-Grid III crimp receptacles or IDC sockets.