SFP fiber transceiver CBO SFP-1G-LX-20KM 1.25Gbps 1310nm single‑mode 20 km

SFP-1G-LX-20KM is a BlueOptics CBO SFP single-mode fiber optic transceiver that supports a 1.25 Gbps link rate and operates at a 1310 nm wavelength with a reach of up to 20 km. The module is intended for installation in SFP-compatible switches, routers and media converters to provide hot-pluggable Gigabit fiber connectivity for long-distance Ethernet or fibre channel links. Its compact SFP form factor and standardized electrical interface allow straightforward integration into existing network equipment for uplinks and trunk connections.

Advantages

The transceiver offers reliable single-mode transmission over distances up to 20 km while maintaining compatibility with standard 1.25 Gbps SFP ports. Hot-pluggable design reduces downtime during installation or replacement. The single-wavelength 1310 nm operation is suitable for long-reach links with single-mode fiber, and the compact SFP format minimizes space requirements in network chassis.

Suitable for

• Long-distance Gigabit Ethernet uplinks between buildings or campus sites
• Fiber trunk connections in enterprise or data center networks
• Integration with switches, routers and media converters that have SFP ports
• Migration from copper to fiber links for reduced interference and higher reliability

Key specifications

• Form factor: SFP (small form-factor pluggable)
• Data rate: 1.25 Gbps (Gigabit class)
• Optical wavelength: 1310 nm
• Fiber type: single-mode fiber (SMF)
• Maximum reach: up to 20 km (single-mode)
• Connector type: LC duplex
• Interface: hot-pluggable electrical SFP interface
• Typical application: Gigabit Ethernet / Fibre Channel

How to use

Power down the host device if recommended by the equipment vendor, then insert the SFP module into an empty SFP slot until it seats firmly. Connect LC duplex single-mode fiber patch cords to the module’s optical ports, observing transmit/receive orientation. After insertion, verify link status on the host device and configure interface settings such as speed, duplex and link protocols as required. For safe removal, follow the host device instructions to unplug the module without applying excessive force.

Recommendations

Use single-mode LC duplex fiber with appropriate launch power and receiver sensitivity for links approaching the 20 km range. Avoid bending the fiber beyond recommended radii, protect unused optical ports with dust caps, and handle the optical connector endfaces carefully to prevent contamination. Confirm compatibility with the host equipment’s supported SFP transceiver list before deployment.