SFP Fiber Optic Transceiver CBO SFP-1000BASE-LX20-M 1000BASE-LX multimode/singlemode 20 km

The CBO SFP-1000BASE-LX20-M is a 1 Gbps SFP fiber optic transceiver designed for long-reach fiber links up to 20 km. Compliant with 1000BASE-LX standards, this module supports both multimode (with mode conditioning) and singlemode fiber connections and is intended for use as a single-port uplink or cross-connect in switches, routers and media converters. The transceiver provides low-latency, reliable optical connectivity for enterprise networks and service provider infrastructures that require stable Gigabit Ethernet links over extended distances.

Advantages

This SFP transceiver offers standardized 1000BASE-LX interoperability, compact form factor compatibility with SFP ports and support for long-distance transmission up to 20 km. It is engineered to deliver consistent optical performance with low jitter and latency while minimizing footprint in rack-mounted equipment. The module supports both multimode and singlemode fiber types (where applicable) to allow flexible deployment across existing fiber plants.

Suitable for

• Gigabit uplinks between switches and routers over fiber
• Connecting media converters to fiber backbones
• Enterprise and campus backbone links up to 20 km
• ISP access networks and metropolitan fiber segments

Key specifications

• Data rate: 1 Gbps (Gigabit Ethernet)
• Standard: 1000BASE-LX
• Maximum link length: up to 20 km (depending on fiber type and link conditions)
• Connector type: duplex LC
• Fiber support: singlemode and multimode (mode conditioning may be required for multimode links)
• Form factor: SFP (Small Form-factor Pluggable)

How to use

Install the transceiver into an available SFP port on a switch, router or media converter while the host device is powered on or off according to the equipment manual. Connect the appropriate LC fiber cable—singlemode for long singlemode links or multimode with mode-conditioning patch cable if using multimode fiber—to the module. Verify link status lights on the host device and confirm negotiated speed and duplex settings. Monitor signal levels and error counters through the network device management interface to ensure stable operation.

Recommendations

Ensure fiber connectors are clean and undamaged before insertion to prevent signal loss. Use appropriate singlemode or multimode cabling and check compatibility with existing transceivers and optical budgets. For multimode installations over longer distances, use mode-conditioning patch cords or verify laser launch conditions to avoid modal dispersion. Follow the host equipment vendor guidelines for hot-swap procedures, firmware compatibility and supported transceiver lists.