USB-C Receptacle for Harsh Environments
The Molex 2178040001 is a USB-C (USB Type-C) receptacle from the 217804 series, designed for applications that demand both high-speed data and environmental sealing. With 24 contacts and support for USB 3.2 Gen 2 (10 Gbps), it handles the full Superspeed+ signal set. The IPX8 waterproof rating means this connector can survive continuous immersion, making it a fit for outdoor kiosks, marine electronics, or industrial handhelds that see washdown or rain. The 10,000 mating cycle rating is well above the 5,000-10,000 cycles typical of a standard USB-C port — this connector is built for devices that get plugged and unplugged daily over years of field service. The shielded steel shell and board guide help align the plug during blind mating, reducing wear on the contacts.
Current Rating and Pin Assignment
The current rating is split across three tiers: 0.25A, 1.25A, and 5A, reflecting the USB-C pinout where the VBUS and GND pins carry the main power while the signal and configuration pins handle lower current. The 5A path is sized for fast charging or power delivery up to 100W (at 20V), but the actual current per pin depends on the system's PD negotiation. The 1.25A rating covers the SuperSpeed differential pairs, and the 0.25A rating applies to the sideband and CC pins.
This is a right-angle, surface-mount receptacle with a horizontal mounting feature — it sits flat on the PCB edge, with the USB-C port opening parallel to the board. The solder termination is reflow-compatible, and the board guide provides mechanical alignment during assembly. The through-hole anchor points (part of the SHIELD/ground tabs) add pull strength, but the primary signal contacts are all SMT.
The IPX8 rating means the mated connector pair withstands continuous immersion beyond 1 meter — the exact depth and duration depend on the mating plug's seal design. The insulation color is black, and the shell is steel with a stainless steel shield.