SC is one of the most common connectors in single-mode network equipment, frequently found on optical terminal units. It utilizes a 2.5 mm ceramic ferrule and, unlike ST or FC connectors, is a push-fit device requiring no rotation—a snap-in square interface. The “SC” in SC fiber optic connectors stands for Square Connector. Its rectangular form factor makes it an affordable option with easy insertion/removal, minimal insertion loss variation, high compression strength, and high installation density, contributing to its widespread adoption.
Table1 SC Main Parameters
Category | Specification Requirements |
End-Face Requirements | 400X Compliant with IEC 61300-3-35 |
Insertion Loss | ≤0.3dB |
Return Loss | ≥45dB (SM, PC); ≥60dB (SM, APC) |
Repeatability | ≤0.2dB |
Ferrule Type | PC, UPC, APC with optional floating end |
Covering | 0.9Hytrel, 2.0/3.0mm PVC, armored empty conduit, etc. available |
Operating Temperature | -40°C to +85°C |
Compliance Standard | YD_T 1272.3-2015 |
Main Features
High stability and reliability.
Low insertion loss, high return loss.
Excellent polishing standards.
End-face geometry parameters comply with GR-326Core.
Available in single-core or dual-core cables with Ф0.9, Ф2.0, or Ф3.0 diameters.
Applications
Telecommunications networks
Cable television
Gigabit Ethernet
Active or passive equipment terminals
Industrial, medical, and military applications
Dimensions Of The External Structure