SFP module CBO EX-SFP-1GE-LX40K 1.25 Gbps single-mode 40 km 1310 nm

The SFP module CBO EX-SFP-1GE-LX40K is a compact, hot-pluggable optical transceiver designed for single-mode fiber links. It supports a data rate of 1.25 Gbps (1250 Mbit/s) and operates at a wavelength of 1310 nm, enabling reliable Gigabit Ethernet connections over distances up to 40 km. The module fits standard SFP ports, allowing easy integration into switches, routers and other networking equipment where long-reach fiber connectivity is required.

Advantages

This SFP transceiver offers long-distance transmission capability in a small form factor, reducing the need for intermediate repeaters or additional hardware. Its hot-pluggable design simplifies installation and maintenance, minimizing network downtime during upgrades or replacements. Operating at 1310 nm on single-mode fiber gives a balance of reach and signal quality suitable for backbone and point-to-point links.

Suitable for

• Long-distance Gigabit Ethernet links between buildings or data centers
• Backbone and aggregation links in campus and enterprise networks
• Upgrading copper ports to fiber in switches and routers
• Point-to-point fiber connections requiring up to 40 km reach

Key specifications

• Data rate: 1.25 Gbps (1250 Mbit/s)
• Fiber type: single-mode (SMF)
• Maximum reach: up to 40 km
• Wavelength: 1310 nm
• Form factor: SFP (small form-factor pluggable), hot-pluggable
• Interface: standard SFP electrical and optical interfaces compatible with common switches and routers
• Operating mode: simplex optical transceiver for single-fiber pairs

How to use

Insert the SFP module into a compatible SFP port on your network device until it clicks into place, then connect the single-mode fiber cable with the appropriate LC connector. Ensure the device is configured for a 1.25 Gbps link speed or auto-negotiation as required by your equipment. Monitor link status indicators on the switch or router and verify end-to-end connectivity with standard network diagnostics. For safe removal, disable the port or power down the host device if recommended by the equipment vendor before extracting the module.

Usage recommendations

Use certified single-mode fiber cables and LC connectors, maintain clean connector end-faces, and follow ESD precautions when handling the module. Match fiber type and link parameters on both ends to ensure stable operation over the full 40 km range. Consult your network equipment vendor’s compatibility list if in doubt about specific switch or router interoperability.