Hirose SDEG-9PF(55) — DB-9 Male Plug, Last Buy Sourcing
The Hirose SDEG-9PF(55) is a standard D-Sub plug with male pins in the DE-9 shell layout — the familiar DB-9 footprint used for RS-232 serial, industrial fieldbus, and instrumentation cabling. It carries 9 positions across 2 rows, rated 3 A per contact at 350 V, with gold-plated phosphor bronze contacts (8.00 µ" gold over nickel). The shell is steel with nickel plating, and the housing includes grounding indents for shield continuity before the signal pins mate. This is the male plug half — it mates with any standard DE-9 female receptacle.
What the 3 A and Gold Plating Mean for Your Signal Path
This is not a power contact; do not plan to carry motor drive or heater current through it. For corrosive or high-vibration settings, a thicker gold finish (15 µ" or 30 µ") would be preferred, but this part is not specified for that duty. The grounding indents on the shell mate with the receptacle's ground springs, bleeding shield current before the signal pins touch — a detail that matters for EMC compliance in industrial cabinets.
Mounting and Termination — Panel Mount, Solder Cups
This plug is designed for panel mount with an unthreaded housing shell — it secures through the panel cutout using the mating receptacle's hardware, not its own threads. Termination is solder cup: each pin has a cup that accepts a stripped wire end, soldered in place. The mounting type is panel mount, through hole — the solder cups pass through the PCB if used as a board-mount connector, but the primary installation is panel-mount with wires soldered directly.