Fiber optic SC model

The SC (Square Connector) fiber optic connector is a widely used push-pull connector with a 2. 5 mm ferrule, commonly applied in enterprise, telecom, and FTTH networks.

Overview and Structure

The S

C connector features a square-shaped housing with a push-pull latch mechanism, making it easy to insert and remove while maintaining secure connections in patch panels and devices ( ). It uses a 2. 5 mm ferrule to align the fiber precisely, ensuring low insertion loss and minimal reflection.

Inside the connector, a spring mechanism helps maintain proper contact with the mating adapter, and a “twang” sound often indicates a successful connection ( ).

S

C connectors are available in UPC (Ultra Physical Contact, blue) and APC (Angled Physical Contact, green) polish types, which affect return loss performance ( ). ApplicationsSC connectors are widely used in: Enterprise networks and data centers for patch panels and switchesFTTH (Fiber to the Home) installationsCATV networks and legacy industrial systemsGigabit Ethernet and telecom applications ( )They are valued for their low cost, mechanical stability, and ease of use, although they have a larger footprint compared to LC connectors ( ).

S

C connectors are often paired in SC-SC patch cords for single-mode or multimode fibers, and hybrid assemblies like LC-SC are used for device compatibility ( ). 3D Models and CAD ResourcesFor engineering, design, or prototyping purposes, SC connector models are available in various CAD formats such as SOLIDWORKS, Inventor, CATIA, STEP, STL, IGES, DWG, and DXF ( ). These models allow designers to integrate SC connectors into optical distribution frames, enclosures, or custom assemblies for simulation and layout planning.

Key Considerations

Fiber mode: Single-mode (OS2) or multimode (OM3/OM4/OM5)Cable geometry: Simplex or duplex, with jacket diameters typically 0. 9 mm, 2. 0 mm, or 3.

0 mmPolish type: UPC for general use, APC for high return loss applicationsInsertion loss and return loss: Proper assembly and inspection are critical to minimize optical signal degradation ( )SC connectors remain a reliable and cost-effective choice for maintaining existing infrastructure and are still widely used despite the rise of smaller connectors like LC in high-density environments.