USB-C Receptacle for High-Duty-Cycle Data and Power
The Molex 1054550101 is a USB-C (USB Type-C) receptacle from the 105455 series, built for the USB 3.2 Gen 2 specification. This 24-contact, single-port connector handles the full SuperSpeed+ data lane plus power delivery, with a shielded steel/stainless shell to keep EMI out of the signal path. It is a horizontal, mid-mount design that sits flush with the board edge — a common footprint for tablet docks, monitor hubs, and industrial panel interfaces where the connector body needs to be recessed into a cutout. The current rating is split across three tiers — 0.25A, 1.25A, and 5A — which maps to the USB-C pin assignment: the 5A path is for the VBUS power pins, the 1.25A handles the configuration channel and sideband use, and the 0.25A covers the high-speed signal contacts. The 30VAC/DC voltage rating is standard for USB-C and covers both the power bus and signal levels. The gold contact finish on all 24 pins resists corrosion and maintains consistent contact resistance over those cycles.
Mounting and Termination: Mid-Mount SMT with Board Edge Cutout
This receptacle uses a horizontal, mid-mount orientation with SMT solder tails. The 'mid-mount' means the connector body sits partway through the PCB thickness — the board edge has a cutout that the connector drops into, so the top of the receptacle is nearly flush with the board surface. That keeps the overall z-height low and lets the USB plug insert parallel to the board plane. The mounting type supports board edge, cutout, surface mount, and through-hole right-angle variants — this specific part is the SMT version, so there are no through-hole posts to solder. The shell/shielding material is steel, stainless, which provides the mechanical rigidity needed for the 10000-cycle life and the EMI containment for the SuperSpeed data rates.