SFP transceiver CBO SFP-1G-ZX-120KM 1.25Gbps 120 km single-mode fiber

CBO SFP-1G-ZX-120KM is a compact SFP optical transceiver designed for 1.25 Gbps Ethernet transmission over single-mode fiber with a maximum reach of 120 km. The module supports hot-pluggable installation into compatible SFP ports and is intended for long-distance network links, metro or carrier connections, and fiber backbone extensions. It provides optical connectivity for routers, switches and optical equipment where long-range single-mode links are required while maintaining industry-standard form factor and electrical interface.

Advantages

The transceiver offers long reach capability up to 120 km over single-mode fiber, enabling extended link distances without intermediate repeaters. Its SFP form factor supports hot-swapping for minimal downtime and easy replacement or upgrades. Designed for compatibility with common 1.25 Gbps Ethernet interfaces, the module delivers stable optical performance for point-to-point links and backbone connections in carrier, service provider and enterprise networks.

Suitable for

• Long-distance single-mode fiber links between sites and data centers
• Metro and carrier aggregation connections
• Fiber backbone extensions and uplink connections for switches and routers
• Replacement or upgrade of existing 1.25 Gbps SFP ports to extend reach

Key specifications

• Data rate: 1.25 Gbps (Gigabit Ethernet)
• Fiber type: single-mode fiber (SMF)
• Maximum reach: up to 120 km
• Form factor: SFP (small form-factor pluggable), hot-pluggable
• Wavelength: typical long-range (ZX) optical wavelength for extended single-mode links
• Connector type: standard LC duplex optical connector
• Power and operating temperature: designed for typical networking equipment environments (check device documentation for exact ranges)

How to use

Insert the SFP module into a compatible SFP slot on a router, switch or optical device while the host equipment is powered according to the device manual. Connect single-mode fiber with LC duplex connectors, respecting correct transmit/receive orientation. After physical installation, verify link status and configure interface settings on the host device as required for 1.25 Gbps Ethernet operation. For long-distance links, ensure proper fiber attenuation budgeting and, if applicable, use additional optical amplification or dispersion compensation equipment as specified by network design.

Recommendations

Confirm compatibility with the host device and check link power budget for 120 km reach. Use quality single-mode fiber, maintain clean LC connectors, and follow transceiver and equipment manufacturer guidelines for installation, ESD handling and operating temperature limits to ensure reliable long-distance performance.