Mixed-Signal D-Sub for Panel-Mount Harnesses
The Molex 1731070061 is a D-Sub combo plug from the FM, FCT 173107 series, built for panel-mount applications where you need to pass both signal and coax or power through a single shell. It carries 9 positions arranged in a 9W4 layout — 5 standard signal contacts plus 4 coax or power positions — all within a 3 (DB, B) shell size. The solder cup termination means you hand-solder each wire, which is the standard field-repair method for D-sub looms: give me a pinout and I'll rebuild it.
Grounding Indents and Shell Construction
In a noisy industrial cabinet or a test rack with switching supplies, that contact keeps the shield reference clean. The housing/shell flange is unthreaded, so you'll need a separate nut or clip for panel retention.
Contact and Dielectric Specs
The dielectric is glass-filled polyester rated UL94 V-0, so it's accepted inside equipment enclosures.
Current and Contact Duty
Rated 5 A per contact — that's typical for signal-level D-sub pins. The coax or power positions in the 9W4 layout can carry higher current or RF, depending on the insert you load. The 5 A figure applies to the signal contacts; the coax positions are limited by the chosen coax contact and cable.