The tin-plated phosphor bronze contacts are rated 5A per circuit at 110V, with a heavy 100.0µin (2.54µm) tin finish on the mating surface that handles moderate cycle counts — suited for internal wiring where the connector is mated once or infrequently reworked.
The 0.100" (2.54mm) pitch is the defining footprint dimension — it matches standard 0.1-inch perfboard and legacy DIP-style layouts. The 5A per-contact rating is generous for signal-level duty; the real limit is the single-row density and the tin plating, which oxidizes over time and raises contact resistance after many cycles. The UL94 V-0 housing means this header is acceptable inside equipment enclosures that require a flammability rating.