The TE Connectivity 5504657-1 is an SC duplex multimode plug — the standard push-pull 2.5mm ferrule format for duplex fiber links. It's built for 125µm cladding multimode fiber, terminated into a ceramic ferrule for low insertion loss and repeatable alignment. The snap-in fastening locks the plug into the SC adapter with a positive click; no twist-lock, no bayonet, just push until it seats. The housing is a two-material build: the main body in glass-filled polyethersulfone (PES), the inner shell in glass-filled PBT. The beige boot and dust cap are standard for multimode SC — the boot colour cues the fiber type at a glance on the patch panel. Strain relief is integrated into the boot; it grips the cable jacket and takes the pull load off the ferrule bond. This plug is designed for 3.0mm cable diameter — the boot and internal grip are sized for that OD. If your cable is 2.0mm or 2.9mm, the strain relief won't clamp properly and the assembly will fail the pull test. Stick with 3.0mm jacketed simplex or zipcord duplex cable.
Where this plug sits in the SC family
SC connectors split on two axes: simplex vs duplex, and multimode vs single-mode. The 5504657-1 is the duplex multimode variant — two fibers in one plug body, ceramic ferrule, beige boot. The single-mode SC plug (typically blue boot) uses a different ferrule bore diameter for 9µm core fiber. The simplex version carries one fiber per plug. If your link needs a single-fibre connection, look at the simplex SC; if you're running single-mode, the ferrule and polish angle differ.
No official cross-reference or equivalent is listed; if you need a second source, the SC duplex multimode interface is standardised per IEC 61754-4 and TIA-604-3, so any SC duplex multimode plug with a 3.0mm cable grip and ceramic ferrule will mate in the same adapter. That said, the boot colour, housing material, and strain relief geometry vary by manufacturer — confirm the cable OD and pull-off force before swapping brands.
Termination and field assembly
This is a field-terminable plug — the ceramic ferrule is pre-polished or accepts epoxy-and-polish termination depending on the kit. The snap-in fastening means no special tool for the latch; just push into the SC adapter until the click. Free-hanging in-line mount — no panel cutout required, the plug floats on the cable. The dust cap protects the ferrule face when unmated; the strain relief prevents the cable jacket from peeling back at the boot.