SC fiber optic connector is mostly used in router switches and transmission equipment side optical interfaces. SC connectors are directly plugged in and out, and are easy to use. For 100Base-FX, the connector is mostly SC type, and the core of the SC connector is inside the connector.

1. Structure and features

• Appearance design:

Square housing (plastic or metal), push-pull locking mechanism, plug and unplug without rotation.

Common simplex (single channel) and duplex (dual channel, used for Tx/Rx separation) types.

• Core components:

Ceramic/metal ferrule, customizable aperture, high-precision alignment of optical fiber, ensuring low insertion loss (typical value <0.3dB).

• Advantages:

High stability: plug and unplug times can reach more than 1,000 times, suitable for frequent operation scenarios.

Low loss: single-mode return loss >50dB, multi-mode >35dB, suitable for long-distance transmission.

Easy to install: push-pull design simplifies wiring, especially suitable for dense patch panel environment.

2. Typical application scenarios

Telecommunication network: used for FTTH (fiber to the home), metropolitan area network backbone connection.

Data center: early 10G/40G network, now gradually replaced by LC, but still exists in traditional equipment.

Cable TV (CATV): Due to its stability and anti-interference ability, it is used for broadcasting and television signal transmission.

Enterprise LAN: Connects switches, servers and other devices, supports Gigabit Ethernet.

3. Comparison with other connectors

4. Selection and use precautions

Mode selection:

Single mode (SM): yellow shell, used for long distance (up to 80km or more).

Multimode (MM): orange (OM1/OM2) or aqua (OM3/OM4), short distance (≤550m).

Anti-bending option:

Select SC connectors with "Bend Insensitive" design to reduce bending loss (such as G.657 fiber).