The Amphenol FCI 74233-102LF is a USB-A and power combo plug — a single-shell connector that carries both USB 2.0 data and a separate power pair in one 8-contact body. It is the plug (free-hanging, in-line) half of the mating pair, designed for cable assemblies that need to deliver USB signal plus a higher-current supply line without a second connector. The 8 contacts split between the standard USB-A pinout and additional power contacts, with a dual current rating of 1.5A and 3A per circuit — the 3A contacts are sized for the power rail, the 1.5A contacts for the USB data lines.
What the Dual Current Rating Means for Your Harness
The 1.5A and 3A per-contact rating is not a range — it reflects two contact groups within the same connector. The USB 2.0 signal contacts (pins 1-4 in the standard A layout) are rated 1.5A, while the additional power contacts carry the 3A rating. This means the power contacts can handle a combined 6A (2 contacts × 3A) for the device load, while the USB data lines stay within their 1.5A limit. The 12V voltage rating matches standard USB power delivery; do not use this connector on a 24V or 48V bus.
This is a solder-termination plug — the cable wires are soldered directly to the contact tails, not crimped. The free-hanging (in-line) mount means it terminates to a cable, not a PCB. The mating half is a USB-A combo receptacle, such as the Amphenol FCI 55917-501LF, which is a horizontal PCB-mount receptacle with board locks and the same 8-contact, USB 2.0 + power layout. The steel/stainless shield provides EMI containment for the USB data pair.
How It Compares to 74233-100LF and 74233-101LF
The 74233-102LF shares the same 8-contact, USB 2.0 + power combo design, gold GXT™ plating, 1500 mating cycles, and teal housing as the 74233-100LF and 74233-101LF. All three are active, tray-packaged plugs with a 1.5A current rating. The difference is not in the spec table — the -100LF and -101LF variants may carry minor dimensional or packaging differences not captured in the available data. For a BOM line, the 74233-102LF is the order code to use; if the -100LF or -101LF is on your BOM, confirm the exact variant against the mating receptacle and cable assembly drawing before substituting.