The Amphenol BERGSTIK® 75844-102-04LF is a 4-position, dual-row unshrouded breakaway header on the standard 0.100" (2.54 mm) pitch. The 4 positions loaded across two rows give it a compact 2×2 footprint that matches the most common signal and low-power circuit counts on a BOM. The 30.0 µin (0.76 µm) gold GXT™ plating on the mating surface provides the contact durability for repeated mating cycles and resistance to corrosion in mildly aggressive environments. The housing is black thermoplastic rated UL94 V-0, and the operating temperature range of -65°C to 130°C covers industrial cabinet, outdoor telecom, and automotive underhood environments where the connector sits unpowered on the shelf or sees moderate thermal cycling.
The 0.100" (2.54 mm) pitch and 0.100" (2.54 mm) row spacing are the breadboard-standard grid that drives the PCB footprint — every DIP IC and proto-board uses this spacing, so the header drops into a standard 0.100" grid layout without custom pad spacing. The 0.230" (5.84 mm) mating pin length gives enough engagement depth for standard box headers and IDC receptacles. At the full 5 A load on all four circuits, the temperature rise stays within the -65°C to 130°C operating envelope, but for continuous duty above 85°C ambient, derate per the manufacturer's curve. The 110 V voltage rating is conservative for the 2.54 mm pitch — creepage distance is adequate for most low-voltage DC and AC signal circuits.