The TE Connectivity 5504932-1 is an SC simplex plug designed for multimode fiber optic terminations. It accepts a 0.9mm tight-buffer cable — the 900µm outer diameter — and terminates it with a ceramic ferrule for low insertion loss and good return loss in multimode links. The plug comes fitted with a dust cap to protect the polished ferrule end-face during storage and handling, plus a strain relief boot that anchors the cable jacket to the plug body. The snap-in fastening gives a positive lock into any standard SC adapter or bulkhead. This is the simplex (single-fiber) version, so one plug terminates one strand.
The 0.9mm cable diameter is the critical fit dimension — this plug is built for 900µm tight-buffer fiber, not the 2mm or 3mm jacketed cable common on patch cords. If your cable has a 900µm coated fiber with no outer jacket, this plug accepts it directly. The strain relief boot grips the cable jacket to prevent the fiber from pulling out of the ferrule during handling. The ceramic ferrule is standard for multimode SC connectors and provides the precision bore needed to align the 125µm cladding diameter fiber.
Multimode vs singlemode
This plug is rated for multimode operation. The ferrule bore and polish are optimized for 125µm cladding diameter fiber. Using this plug on a singlemode fiber will produce high insertion loss.
The housing is moulded from polybutylene terephthalate (PBT) with glass fill — a common choice for SC connectors that provides dimensional stability and UV resistance. The body is polyethersulfone (PES), also glass-filled, giving the plug body good thermal and chemical resistance for indoor and protected outdoor environments. The boot is black, the housing is beige — the standard colour coding for multimode SC connectors. The plug ships in bulk packaging, so it arrives loose for field termination rather than pre-loaded on a cassette.