The Amphenol BERGSTIK II 86840-140HLF is a 40-position, dual-row unshrouded header on the standard 0.100" (2.54mm) pitch — the same footprint as legacy 0.1-inch grid DIP packages, so it drops onto a familiar board layout. All 40 positions are loaded, making it a direct BOM match for a 40-circuit signal or low-power interconnect.
What the Ratings Mean
Rated 5 A per circuit at 110 V — the current is per-pin, not a total across the header, so a fully populated 40-pin connector can carry 5 A on each circuit as long as the aggregate temperature rise stays within the housing limits. The 30.0 µ" (0.76 µm) gold plating on the mating surface is a mid-grade thickness: enough for hundreds of mating cycles in a clean environment, and the gold-on-gold interface avoids the fretting corrosion you get with tin-to-tin contacts in low-voltage signal paths. The UL94 V-0 rating means the black thermoplastic housing will self-extinguish within 10 seconds if ignited — a standard requirement for equipment inside an enclosure.