The 1-2355104-0: The tighter pitch saves board real estate but demands a matching footprint on the PCB; the 2.00 mm spacing limits trace routing width between pads on a two-layer board.
Gold Mating Finish and Cycle Life
Unshrouded Breakaway — Alignment Matters
No shroud around the pins means the mating receptacle has no lead-in chamfer. The board layout must account for pin-one orientation and keep-out zones; a misaligned mate can bend pins. The push-pull fastening type adds no secondary lock — vibration resistance depends on the mating housing's retention.
Comparing Against the 1376779-2 Peer
Key difference: 1376779-2 carries 3 A per contact (vs 2 A) and 250 VAC rating (vs 125 V), with 8.00 µinch gold mating finish (vs 3.94 µinch). If your BOM needs higher current or more mating cycles, the 1376779-2 is the upgrade path — but it ships in box packaging, not tube.