SFP transceiver CBO SFP-1G-ZX-120KM Fiber Optic 1.25Gbps 120 km

CBO SFP-1G-ZX-120KM Fiber Optic 1.25Gbps 120 km is a single‑mode SFP transceiver designed to provide a serial optical data interface for network equipment with SFP slots. Supporting a 1.25 Gbps data rate and an extended reach of up to 120 km, this module is intended for long‑distance Ethernet and telecom connections. It fits standard SFP ports on switches, routers and media converters and is suitable for installations requiring reliable fiber links over extended distances.

Advantages

The transceiver offers stable 1.25 Gbps performance over single‑mode fiber and supports long‑distance links up to 120 km, enabling connectivity between remote sites without intermediate repeaters. Its compact SFP form factor allows hot‑swappable installation into compatible network devices, reducing downtime during upgrades or replacements. The module is engineered for predictable optical transmission characteristics and straightforward interoperability with standard SFP ports.

Suitable for

• Long‑distance Ethernet links between buildings or sites
• Telecom and carrier access networks requiring extended reach
• Connecting switches, routers and media converters over single‑mode fiber
• Industrial or campus networks where fiber span exceeds typical multimode ranges

Key specifications

• Data rate: 1.25 Gbps (serial optical)
• Fiber type: single‑mode
• Maximum link length: up to 120 km (depending on fiber quality and budget)
• Wavelength: typical long‑reach optical wavelength (designed for ZX class links)
• Form factor: SFP (hot‑swappable)
• Connector: standard LC duplex optical interface
• Operating temperature: designed for standard commercial temperature ranges (check device documentation for exact limits)

How to use

Install the SFP transceiver into an empty SFP slot on a compatible switch, router or media converter until it clicks into place. Connect single‑mode fiber using an LC duplex patch cable, ensuring correct transmit and receive orientation. Verify link status via the host device’s port indicators or management interface and configure network settings as required for 1.25 Gbps operation. For long spans, confirm fiber attenuation and use appropriate fiber type and connectors to maintain signal integrity.

Recommendations

For reliable operation at extended distances, use single‑mode fiber with suitable attenuation budget and high-quality LC connectors. Avoid excessive bending or tension on fiber cables, and verify that connected equipment supports the transceiver’s data rate and optical parameters. When planning links near the maximum range, perform optical power and loss measurements to ensure margin for environmental and connector losses.