The BNC(75)-PLR-PC(D)-12G-3: That 75 Ohm impedance is the whole point: this is not a standard 50 Ohm BNC repurposed for video. It is a dedicated 75 Ohm design with a syndiotactic polystyrene (SPS) dielectric that keeps the impedance tolerance tight across the band. The right-angle through-hole termination with a flange lets you bolt it to a panel and solder it to the PCB in one assembly step — common in broadcast routers, video patch panels, and HD-SDI distribution gear.
Mounting Fit — Panel Flange and Right-Angle PCB Tails
The flange mount with through-hole right-angle tails is the mechanical signature of this part. It bolts to a panel cutout (standard BNC D-hole) and the PCB tails solder into the board — the flange takes the cable strain off the solder joints. The shield termination is solder, not a crimp ferrule, so you tack the braid directly to the shell body for a low-impedance ground path. The zinc alloy body with nickel finish gives a corrosion-resistant shell that mates with any standard 75 Ohm BNC plug.
The closest functional sibling is the BNC(75)-PLR-PC-12G-1 — same 75 Ohm impedance, same 12 GHz rating, same zinc alloy body with nickel finish, same flange mount and right-angle PCB tails. The only difference in the spec record is packaging: the -1 ships in Tray, while the -3 ships in Bulk. If your pick-and-place line is set up for tray feed, the -1 avoids the bulk-handling step. For hand assembly or low-volume builds, the -3 in Bulk is the straightforward choice.